8 Best Energy Efficient Space Heater For Large Room 2022

Space heaters are typically small heating units that you use to supplement your primary heating system.

If they can’t be used to heat the whole house, can they be used to heat a large room, including garages and workplaces? If yes, will they increase your heating bills?

In this article, I’ll answer these questions and recommend some of the most energy efficient space heaters for large rooms.

Most of these space heaters have higher BTU ratings and energy-saving features intended to help you cut your heating costs. What’s important is to make sure you have properly sized your space heater.

A space heater that is too small will have to work twice as hard to warm a room, wasting a lot of energy, and even then, the desired temperature might not be reached. If the heater is too large, it will warm the room too quickly, leaving some zones

Most Energy Efficient Space Heater For Large Room

Benefits of Energy Efficient Space Heaters

benefits of energy efficient space heater for large room


Home heating is one of the most costly expenses in the home. According to the US Energy Information Agency (EIA), the average household spends just over $900/year on home heating if using electric heating.

Others pay a lot more depending on the type of fuel. The average cost of heating with propane heaters, for instance, is over $3,000/year. This equates to just over 5% of the median household income in the US.

Switching to energy-saving electric space heaters can significantly reduce your energy bill. It’s estimated that supplementing with Energy Star-rated electric space heaters alone can cut your heating expenses by a massive 30%.

The electric space heaters in older homes typically operate on 65% AFUE (more on AFUE shortly). It means that for every 100 watts of electricity drawn from your home’s supply, 35 watts are lost. Modern, energy-efficient heaters are up to 90% efficient, meaning that only about 10% of electric energy is lost.

Other advantages of energy-efficient heaters include;

  • Greater indoor comfort: Energy efficient space heaters are designed to deliver optimal comfort. They’re not just about pumping heat into your home. They attempt to balance other factors, including humidity and air movement, to provide the perfect climate. The result is healthier, more comfortable indoor air.
  • Longer equipment life: Energy efficient space heaters are also long-lasting because they self-regulate to reduce the internal components’ load. Many of them go on and off or reduce/increase heating temperatures as necessary to deliver maximum comfort. In the process, the heating and blowing components work less, thus a prolonged life.

Energy Efficient large room space heater

What Does “Large Room” Mean?

A room heater with a capacity of 800-1,000 square feet is what is called a “large room space heater.”

1500 watts is the maximum amount of power that an electric large room space heater may use. That’s roughly 9,000 BTUs for propane heaters.

At best, the statement that a large room heater can “heat up to 1,000 square feet” on most space heater product pages is misleading.

A more precise statement would be: “This large room space heater adds additional heating to up to 1,000 square feet of insulated area.”

Factors that Affect How Much Space a Heater Heats

Several factors can affect the heating effect of your space heater. This is what we’ll outline in this section. 

That’s because it’s important to understand these factors to help you whenever you’re using the device. Check them out below.


Insulation is one of the most important factors that affect how much space a heater heats. Is your home insulated? How well your room is insulated plays a significant role. The larger the space it will heat, the better its insulation.

Using the large room space heater in an uninsulated room will take more time to heat up. That’s because there are no barriers between the warmth and colder air outside. 

The same thing goes for drafty windows and doors: these drafts let cold air inside and interrupt the flow of warm air from your heater towards other areas where it needs to go.

The Space Heater’s Heating Power 

The heating power is another important factor that affects how much space a heater heats. If you want to effectively heat your room, the size of the device’s heating element matters. 

Look for one with at least 1500 watts of power. Other factors also come into play. If it has an adjustable thermostat and high wattage output, there’s no doubt its ability to warm your home.

Central Heating 

Do you have central heating in your home? If yes, this factor won’t affect how much space a heater heats. But if not, and you rely on the device to heat more than one room or area, it definitely will. 

That’s because most of these devices only provide warmth within their reach (which is usually limited). So how well is the primary heat source performing? Also, what desired temperature have you set the thermostat to? These are two crucial questions to answer.

Outside Temperature 

When the weather is below freezing outside, a space heater may quickly heat 1,000 square feet at 55F outside. But it will have difficulty keeping a room that size warm if it is colder than that. Therefore, it is important to take into account the outside temperature.

Sometimes it depends on what season you’re in if your space heater will be able to heat a room well enough or not. Remember that certain seasons are colder than others, which may affect how much space a heater heats.

Indoor Temperature 

If the space is heated via a heat source like a furnace or heat pump, it can raise the desired temperature to 72F in a 1,000-square-foot area.

However, the best space heater will not warm a room that size if it is only heated to 50F or isn’t heated at all. 

Common Uses of Large Space Heaters

Where would you want to use a large room space heater? Could it be in “large rooms?” Sure, but there are more ways to do it. Below are some of the ways you can use a large space heater for a large room. They include:

  • TV rooms and living rooms where most people gather, but they are spread out.
  • You can use them in bedroom/bathroom suites or large bedrooms when the central heating is not turned off during the night.
  • You can also use it in rooms with poor insulation or rooms with old, drafty windows.
  • Rooms that are far from the central heating source typically don’t get adequately heated.
  • Small spaces or apartments, condos, and townhouses that have an open floor plan.
  • Small bungalows or 1.5-story homes that have open floor plans.
  • You can use it in small additions to avoid the expenses of a separate furnace or heat pump.
  • Use in cabins and even small vacation homes. 
  • Use in bonus rooms above garages because they usually are not well ventilated.
  • You can also use it in unfinished basements that are damp or chilly.
  • Using in insulated workshops or garages.
  • Utilize in large RVs/fifth wheelers.
  • You can use it in 3-season rooms if you want to use it for more than a year.

Generally, there are two significant ways that you can use large room heaters. 

For Supplemental Heat

You need to remember that space heaters are usually designed to supplement your primary heating source, which includes furnaces, boilers, or heat pumps. 

As mentioned earlier, the supplemental heat makes your space comfortable when the central heat is inadequate or when you turn it down. Below are simple examples of how most large room electric space heaters are used:

  • If you happen to have a home office that is mainly occupied from 9 am to 5 pm.
  • You like a toasty bedroom during the winter season.
  • If you like spending your evening in the kitchen, TV room, finished basement, or other space.

Regardless of where it is, you’re bound to save money by turning down your house’s primary heat source and then adding supplemental heating to the occupied room/zone.

Occasional Heating

Is it possible to use a large room space heater for occasional heating? Absolutely! But this can only make sense when the electric heat is costly compared to the gas furnace or heat pump.

Below is a table that compares heating costs for some of the most common heating sources.

Type Daily Cost to Heat 1,000 s.f.
Mini-split heat pump $0.65 – $1.05
Standard heat pump $0.80 – $1.05
Gas furnace  $1.20 – $2.15
Boiler $1.45 – $2.30
Electric space heater  $1.90 – $2.40

Space Heater Sizing

Choosing the ideal-sized space heater is a complicated process that depends on various criteria. Still, all of them are based on one fundamental principle: 10 watts per square foot of area.

The amount of power required to heat a room is determined by the square footage and the desired temperature at which it will be used. 

For example, if you want to heat a 10’x12′ room with a large room space heater that requires 1200 watts, multiply the number of square feet by 10 (120 sq. ft. x 10 = 1200 watts). 

Here are several factors that you need to consider.


Heavy insulated Rooms (with a minimum R-value of approximately double the recommended value) require less power to heat them, at just 7.5 watts per square foot. 

Lightly insulate rooms (R-value: 0.049 to 0.084) require more, roughly 12 watts per square foot.

Rooms that don’t have any insulation, such as garages, basements, and work sheds. The heat is transferred from these rooms at a greater rate than produced, thus draining the heat away rapidly.

Consider boosting the R-value of your home if you spend a lot of time in these areas.


Windows are poor insulators, even the finest. As a result, windows account for roughly eight percent of a house’s overall energy consumption but up to 25% of its heat loss. 

Thermal emissivity is the culprit. Emissivity is a measure of a material’s ability to emit thermal radiation. The emissivity rating indicates how well a surface captures and emits heat. 

A high rating means it absorbs heat. A low rating means it reflects heat. Window glass has an emissivity of 0.91, which means they absorb and radiate 90% of the thermal energy they are exposed to.

Ceiling Height

Heaters that use convection as a heat source are known as convection heaters. When they’re switched on, the air in touch with them heats up and expands upward, forcing the colder, denser air above it to descend and be replaced.

As the cooler air sinks, it is warmed by the space heateras it comes into touch with it. As it rises, more air is displaced, continuing the cycle and generating a convection current that gradually raises the temperature of the space. Unfortunately, convection heating is less efficient in rooms with high ceilings; anything taller than 8 feet is out of luck.

A heated floor causes the air to cool slower, making it more difficult to rise back down to warm the people below. Add 25% extra wattage to your space heater for every 2 feet of extra distance to make up for it. For instance, a 1500-watt space heater is ideal a 10 x 12 room with 10-foot ceilings.

Check out the equation below to understand better:

1200 watts * 0.25 = 300 watts

300 watts * 1200 watts = 1500 watts

Therefore, a 10 x 12 room with a 12-foot ceiling will need an 1800-watt space heater. 

See the equation below:

1200 watts * 0.5 = 600 watts

600 watts + 1200 watts = 1800 watts

Are Space Heaters Energy-Efficient?

Yes, space heaters are quite energy-efficient. It’s a proven fact that electric space heaters use less energy than fireplaces. So if you’re seeking a more environmentally friendly option, a space heater is your best bet.

When you use a space heater instead of a conventional heat source, you save energy. You can use it in any area of your home that is being utilized at the time. It might be your bedroom, living room, garage, office at home, or nursery for your child.

How to Know if Your Space Heater is Energy Efficient

Energy efficiency ratings are the most reliable technique to determine whether your space heater is energy efficient.

Space heaters usually come with these ratings. They’re little gold stars on the space heater. The more stars, the more efficient the space heater is.

Do Space Heaters Use a Lot of Electricity?

Many people avoid installing space heater in their homes due to the high cost of purchasing and maintaining them. However, you shouldn’t fear because the expenses of space heaters mainly depend on where you’re using them.

This means that the larger the area you’re using the space heater, the higher your costs will be. Therefore, the electric power consumption rate also highly depends on the type of space heater you plan on buying. 

If your main aim is to warm one or two rooms, your space heater will use less energy. Some space heaters use less energy than others. You should also remember that you stand to lose plenty of money in electricity bills if your house is not well insulated.

Calculate How Much Electricity a Space Heater Uses

The wattage of the space heater is crucial to know to figure out how much electricity your space heater consumes. In most cases, the wattage is inscribed on the space heater or included in the user manual.

The wattage of a space heater is represented by the letters W. The size of a space heater indicates how much power it consumes. As a result, it’s wise to have a look at the manual for your space heater’s wattage.

Most electric heaters use 1500W, but some use slightly less or more. 

Therefore, if we assume you have a 1500-watt heater and 1,000 watts are equal to 1 Kilowatt, then it means your space heater uses 1.5 kilowatts of power.

The electric bill is measured in kilowatt-hours (kWh), the amount of energy used while running a 1-kilowatt appliance for one hour. 

You need to multiply the number of watts your electric heater uses by the number of hours you plan on using it.

Therefore, assuming you plan on using it for 8 hours in a single day, then below is the equation:

1500 * 8 hours = 12,000

Now go ahead and divide the result by 1,000

12,000 ÷ 1,000 = 12

The next step is to multiply the result by the rate your utility charges for electricity. 

The average residential electricity rate in the United States is 13.90 cents per kilowatt-hour (kWh). 

Therefore, that will be:

12 * 0.139 = 1.668

So, based on these numbers, a full day of running the space heater in a warm room would cost you about $1.688. So that’s roughly $2.

Space Heaters vs. Central Heating

A space heater is quite portable compared to a central heating system which only distributes heat into smaller areas. Modern space heaters usually come in a variety of sizes with different wattages. 

However, a central heating system is the most popular type of heating in the United States. The central heating system is usually powered by gas or electricity. Therefore, you always have to remember that electricity is pretty expensive. So, which of these two options of heating is energy efficient? Let’s find out.

Electric space heaters are not energy efficient compared to gas furnaces or gas space heaters. However, electricity is still expensive in most places than natural gas. Therefore, if you want to save money with an electric space heater, you can use it whenever you only need to heat your room or space. 

You will also need to turn down the thermostat if you want to save money. That’s because space heaters for large are used on top of your central heating to solve heating inadequacies. You will also need to remember to turn off the space heater when you’re not using it.

Electric vs. Gas Space Heaters

In comparison, electric heaters are cheaper, easy to install, and don’t need chimney-like gas space heaters. But, it’s important to note that gas heating has lower operational costs since gas is cheaper than electricity. Gas heaters are also excellent at warming up large spaces compared to electric heaters. 

On the other hand, electric heaters tend to be economical when used in small rooms than gas space heaters which are usually not.

The cost of installing gas heaters is high because they need a centralized furnace with flue outlets. However, electric heaters are way cheaper to install.

When it comes to operational costs, gas heaters produce more heat than electric heaters in the same amount of time. That means gas heaters have lower operational costs because gas is cheaper than electricity. 

Features to Consider when Choosing an Energy-Efficient Space Heater

Space heaters tend to differ in so many ways. Therefore, it’s essential to understand some of the features you need to keep an eye on to ensure you find the right large room space heater for your needs. Below are some of the top features to consider when choosing an energy-efficient space heater.

  • Thermostat: It’s crucial to have a heater with a built-in thermostat control. That’s because this will help you adjust the room temperature to your liking. Once you set the thermostat to your desired temperature, the space heater will strive to maintain it.
  • Size: Size essentially means the amount of space the heater can heat adequately. First, you need to measure the room you want to heat to choose a heater that can comfortably heat it. Check for factors like your ceiling height and quality of insulation.
  • Timer: It’s also important to look for a space heater with a timer. The timer will help you set the heater to run for a specific amount of time, like 5 hours or more. Once the period ends, the heater will automatically shut off, keeping you safe.
  • Noise: All heaters have different noise levels. Even silent energy efficient space heaters tend to produce a bit of noise. What you need to avoid is rumbling noises. Therefore, you need to choose a heater that doesn’t produce much noise.
  • Length and Power Cord Quality: You need to have a long cable to give you enough flexibility in terms of heater placement. It will allow you to place the heater wherever you feel like it. Aside from that, you also need to ensure the power cord quality is top-notch. Poor quality cords can melt easily and create a preventable fire hazard.
  • Remote Control: Having a space heater with remote control allows you to operate from anywhere within the room. Therefore, you need to choose a large room space heater with remote control to offer you comfort whenever you want to use it.
  • Automatic Shutoff: You shouldn’t confuse the timer with the automatic shutoff. A space heater with automatic shutoff adds more safety because it helps the space heater turn off immediately if someone knocks it down accidentally. It also helps the space heater go off if the internal components become too hot.

Which Types of Heaters are the Most Efficient

There are three broad categories of space heaters, i.e., infrared space heaters, ceramic space heater, and oil-filled. Here’s how the three rank in terms of energy efficiency;

different types of the best energy efficient space heater for large room

Infrared Space Heaters

Infrared space heaters are radiant heaters. They emit perfectly safe infrared rays that warm people and objects directly in their path. Since they warm you directly, you feel the warmth instantly. By contrast, convective space heaters depend on air movement to reach people (and objects) in the room.

This mode of operation makes infrared heaters extremely efficient. If properly installed, they will direct most of the heat where it’s needed, resulting in very little energy loss. The overall efficiency, however, also depends on the type of heating element used.

Oil-Filled Radiators

Oil-filled heaters, as the name suggests, are also radiant heaters. They depend on natural radiation to transfer heating from the heating appliance to the people in the room.

But, they work slightly differently than infrared heaters. A heating element inside the space heater heats oil inside a permanently sealed tank. Then the oil radiates heat out of the space heater and into the room.

What makes oil radiators extremely efficient is that the oil used can retain heat for long periods. As such, oil radiators can continue emitting heat even an hour after you’ve turned off the heater.

This is different from infrared space heaters and ceramic heaters that stop emitting heat as soon as the heater is turned off.

Ceramic Space Heaters

Finally, ceramic heaters are convective heaters. They generate warmth through a heating element. This warmth is then carried out of the heating space heater and distributed throughout the house via a fan system. These space heaters for large rooms are known as ceramic heaters because they use a Positive Temperature Coefficient (PTC) ceramic plate as the heating element.

Ceramic heaters are also very efficient, but not as much as the first two options. They distribute heat very well, which is perhaps their biggest strength. However, the blowing action can push warm air outside the house. Additionally, blowing is known to cause dust and allergens. These can offset all the gains made.

Other Options

As you may have noticed, all three categories of space heaters above are electric space heaters. If you’d prefer to use other fuels, propane and gas are great options.

They are both renewable energy sources and guarantee tons of heating power for every BTU of fuel consumed. Many propane heaters for large rooms, for instance, are 70-96% efficient. Kerosene is another option.

The only downside is that these electric space heaters are not safe for indoor home heating. They present a significant fire risk, partly explaining why they are rarely mentioned when discussing space heaters. Additionally, maintenance is an issue. Maintaining and refilling gas heaters negates some of the efficiency qualities.

That said, though, gas and kerosene heaters make excellent and energy-efficient heating options for unusual spaces such as garages and basements. If you choose to invest in one, keep in mind that vented space heaters (which are the recommended option) are less energy-efficient than unvented space heaters.

Tips to Save Energy with Space Heaters

Even after you’ve picked the right energy-efficient space heater for large room, your work isn’t done. You need to take steps to extract even more useful heat from your heater. The following tips should help;

how to save money with a space heater

Correct Placement

The positioning of your space heater is crucial. Most space heaters are meant to install on the wall or floor, but some installed on the ceiling or under windows (baseboard space heaters).

Then, there are also portable models that you can position as you please. Make sure to install the space heater as advised by the manufacturer and away from obstructions.

Consider Professional Installation

Professional installation is critical to space heater efficiency. Unless it’s a portable electric heater, having an HVAC professional identify the right location and install the best space heater properly can dramatically improve air circulation in the room, effectively reducing the thermostat control setting needed to achieve optimal indoor comfort.

Properly Insulate your Home/Room

No matter your heater’s energy efficiency, if your home is poorly insulated, you’ll continue using more energy to warm up the place. Adding insulation t your attic, replacing old/missing caulk, sealing your ductwork, and adding weatherproofing to drafty doors and windows can increase home insulation for increased heating (and cooling) efficiency.

Maximize on Heating Controls

Energy-saving modes, timers, and remote controls are just a few controls that can help you maximize energy utilization when using a space heater. For instance, you can leave the heater on when going to sleep, but you could set the timer to switch it to Sleep Mode to save energy. You’ll save a lot of money.

Properly Maintain the Heater

Finally, an efficient heater is a well-maintained heater. If the appliance is left to collect dust for months without scheduled maintenance, it won’t be as efficient as it should be. The same applies if there are broken, malfunctioned, or loose parts inside the appliance.

Best Energy Efficient Space Heater For Large Room

1. Dr. Infrared Heater Portable Space Heater with Humidifier

Dr. Infrared Heater Portable Space Heater with...
  • Newly Engineered and Designed in USA with Advanced Dual Heating System. 1500W with High and Low Temperature Settings range 50 to 85 degree
  • Built-in humidifier produces a cool mist to add much needed humidity to dry, winter air

Dr. Infrared is one of the popular electric space heaterson the market today. It’s an affordable and excellent heating unit that is ideal for any home. One of the noticeable features of this heater is its size. Unlike many huge 1500-watt space heaters, Dr. Infrared stands at only 13” deep x 11” width x 16” height, saving you a lot of floor space that you can use for other things.

How much space does this unit heat? You’ll be surprised that it is 1000 square feet. There are only a few space heaters that can heat such a large room at that price point. Apart from heating, it has an in-built humidifier that adds moisture to dry, heated air. The moist air lubricates your skin, mouth, and nose, preventing allergies and dry air-related illnesses.

Operating this portable space heater is easy, and you have two options in push buttons on the front panel or the wireless remote control. All other settings and modes are accessible on the remote, allowing you to set your desired temperature or program the timer. It’s also safe to use thanks to the overheat and tip-over protection.

Looking at how this heater is designed, you might think it’s heavy, but it only weighs 23 pounds. Most 1500-watt space heaters weigh over 40 pounds. Moreover, it comes with swivel casters that make it easy to move around. Since it utilizes a ball-bearing high-pressure Blower (not a fan) that only produces 39dB, it’s a silent portable space heater that can be used in quiet rooms, including bedrooms and offices.


  • Heat and humidifies
  • Saves floor space
  • two heat settings
  • Quiet operation
  • Tip-over and overheat protection.
  • Has an IR remote control
  • Very mobile thanks to the caster wheels


  • You can’t use all the features at the same time because it eats a lot of your energy

2. Unique Heat Infrared Room Space Heater

No products found.

Unique Heat Infrared Room best Space Heater is my top pick space heater because it has a heat output of 5200 BTU that can warm rooms as large as 800 square feet. It’s also jam-packed with several features that not only make it easy to operate but also save energy during winter.

Since it produces radiant heat through the use of infrared technology, it’s an efficient and faster way to warm your space. You can almost feel the heat instantly because Any object in front of the space heater is heated, so you don’t have to wait for the room to warm up.

Unique Heat has considered the safety of the people who will be using the electric heater. Because it’s infrared heat, you don’t have to worry about fires or burns because it’s safe, burn resistant warmth. An auto tip-over sensor is also included to limit the risk of fires when the space heater tips over. If you don’t like the sound traditional space heaters for large produce, look no further because this is extremely quiet, making it perfect for bedrooms and offices.

To get the best out of this electric heater, Unique Heat recommends that you place the electric heater in a well-insulated room with less foot traffic. If your room is not insulated, you want to close the windows when you turn it on. Even as a large room heater, this space heater should not be used as the primary source of heat.


  • Uses infrared heat technology
  • Safe and quiet
  • two heat settings
  • It is fitted with tip-over and overheat protection.
  • The thermostat control has a working life of 40,000 hours.
  • Has 3 temperature setting scales


  • Expensive than other traditional space heaters

3. DeLonghi TRD40615E Full Room Radiant Heater

De'Longhi Dragon Digital Oil Filled Radiator...
  • Digital control panel with LED display for easy selection includes all the available functions and 24 hour timer.
  • De'Longhi Exclusive: 75% more radiant surface area than RadiaS due to unique design*- the more radiant surface= the more heat transferred to you and your environment
  • Quick Heat Up: Warm air is rapidly distributed thanks to the increased convection heating effect and exclusive battery design.
  • Better Heating- delivers gentle heat minimizing dry air, creating a better breathing environment that is more allergy friendly with no fan to stir up dust, pollen and dander.
  • Integrated handle and control panel allow you to easily operate and relocate your heater at any time during or after use.
  • Exclusive ECO Plus feature optimizes energy consumption by regulating power flow and temperature to efficiently manage your comfort
  • Ergonomic Portability: Enjoy easy movement from room to room thanks to ergonomic front and rear handles Exclusive Smart Snap wheels require no installation and are rubber coated for smooth transition between surfaces.
  • 1500 watts of Long lasting, quiet heat for small to medium spaces
  • Built-in Safety Elements: Important safety features include child lock and a thermal cut-off function that turns off the machine in case of overheating. Additionally, when the temperature dips below 41 degrees F (5C), the Anti-freeze setting automatically switches on the heater
  • Durable & Low Maintenance: High quality steel assembly and permanently-sealed diathermic oil reservoir never needs refilling. A specialized multilayered painting process provides a complete, corrosive resistant finish.

The DeLonghi TRD40615E convection space heaters are a full room radiant heater that weighs only 26 pounds and measures 16.4 x 10.3 x 26.1 inches. It’s uniquely designed to effectively and efficiently heat large rooms with convection heat and also has a 25% more radiant surface to heat people in the room quickly.

You can customize your heating using the digital controls including an adjustable thermostat control, timer, and multiple two heat settings. The high setting provided a power output of 1500 watts for instant personal heating. You can check other options if you’re looking for the best 1500-watt heater.

Safety is an important factor when choosing a space heater. DeLonghi TRD40615E comes with several safety features which include a thermal cut-off that automatically turns the heater off if it starts to overheat. Also, it has an anti-freeze setting that automatically turns on the space heater when the temperature drops below 44 degrees, preventing pipes from freezing.

Nobody wants a heater that makes loud noises. Even though this electric heater clicks when it’s going from a completely “cold start”, the clicking isn’t annoying or distracting. Also, it runs quietly and puts out a gentle, clean, and safe heat.

This electric space heater is powerful and can heat a large room of up to 250 square feet. It is designed using patented thermal chimneys meant to maintain a low surface temperature while maximizing heat flow. Making it one of the best space heaters for large rooms.

Is this electric space heater energy efficient? Absolutely. It features an ECO function that automatically adjusts heat depending on the temperature of your room and power settings for the most comfortable and economical warmth. All these functions are meant to help you save energy.


  • Provide flexible and fast heating
  • It runs quietly
  • This heater maximizes radiant heat flow while a low surface temperature is maintained by using thermal tunnels and vents
  • The multiple two heat settings, an adjustable thermostat, and timer make it very easy for a user to set whatever the ideal temperature is, and to keep the room at this desired heating level.
  • Its anti-freeze setting helps to prevent damaged electronics and frozen pipes without the heater having to run all of the time.


  • The heater produces a clicking sound when turned on or off, or when it’s going from a completely “cold start”. This clicking, however, isn’t annoying or distracting (this is something you should expect from these types of electric heaters when kicking on).

4. Honeywell HZ-980 MyEnergySmart Infared Whole Room Heater

No products found.

Honeywell is also a great large room space heater. It’s one of the best infrared heaters on the market and is ideal for heating mid-size to large rooms and spaces within a short time. If you’re looking for a space heater for a medium-sized bedroom, then this is the best space heater to pick.

It’s the type of heater that quietly distributes large amounts of the IF heat. It’s so quiet; you will even forget it’s on. For precise, personalized comfort, a programmable thermostat is included. This heater utilizes EnergySmart technology, which helps regulate power consumption and can save on energy bills compared to other types of space heaters.

It has an appealing, modern outer look that is made of a compact cubical casing. This makes it able to maintain cool-to-touch housing even when in use. This design can complement any room.

Honeywell HZ-960 Infrared Whole Room Heater is designed with many safety features, including the 4-way tip-over protection and overheat protection which automatically shuts the heater off if tipped in any direction and when it overheats.

Using this new electric heater is easy and straightforward. It has a remote control that allows you to adjust the settings without pacing back and forth. The remote control can be neatly stored in the back of the electric heater. Also, it has digital controls with a LED display which further improves its ease of use.

On the second side of the coin, this electric space heater has limited mobility due to its large size. It also has an old-fashioned outer look, and many still feel that this can be improved. Honeywell HZ-960 also emits lesser heat when compared to conventional radiator heaters.


  • Has an automatic shut-off to prevent tragedies
  • Has a remote control
  • Maintains a cool-to-touch housing even when in use
  • Comes fitted with a handle and casters for easy portability.
  • Has two heat settings


  • Has a low heat emission capacity
  • Has an old-fashioned outer look

5. Duraflame DFS-550-21-BLK Maxwell Electric Stove with Heater 1500 watts

Duraflame Electric Infrared Quartz Fireplace Stove...
  • 5,200 BTU heater provides supplemental zone heating for up to 1,000 square feet to help you save money
  • Infrared quartz heat helps keep more natural humidity in the air, for comfortable heat without drying out the room’s air
  • Flame effect can be operated with or without heat, for the ambiance of a gentle rolling fire all year long
  • Adjustable, digital thermostat allows you to decide the temperature of your room
  • Electronic timer function: automatic timed shut off from 30 minutes up to 9 hours
  • Remote control with 2 AAA batteries included to provide added convenience
  • Patent-pending 3D Flame Effect technology creates realistic flames that dance on and behind the logs with 5 brightness levels
  • Durable metal body construction with side viewing windows, an operable, beveled glass door, and a decorative brick-style back panel
  • Unit is easy to assemble, simply attach the legs, plug it in and it is ready to heat
  • Eco-friendly stove heater does not emit hazardous byproducts and is safe to use around children and pets

Also known as the Maxwell, this electric stove from Duraflame is a 4,600 BTU heater designed to provide supplemental heating for up to 400 square feet. 

It features metal construction with an operational door and upgraded door handle and produces charming, realistic flames with glowing logs. The ember bed can be operated with or without heat.

Several factors make the Maxwell heater a great option when shopping for the most efficient electric space heater for home. It’s a portable heater that you can take with you as you move from one room to another. This allows you to decrease thermostat settings in the central heater. 

Secondly, it features an adjustable thermostat for convenient temperature control. This way, you can minimize energy wastage. Finally, this heater is designed to be eco-friendly and doesn’t emit any emissions or other hazardous byproducts.

The Maxwell features multiple safety features, including the cool-to-touch housing that remains cool even during operation and a built-in tip-over safety switch that automatically turns the heating off if the stove is knocked over. It also features overheating protection and is UL certified.  

If you ever experience any issues with this heater, we have a duraflame infrared heater troubleshooting guide so you can know what to do.


  • Produces 4,600 BTU
  • Very portable at 18 ½ pounds
  • Tip-over protection
  • Cool-to-touch housing
  • Adjustable thermostat control


  • Limited color choices
  • The cord is short

6. Dyna Glo 30,000 BTU Liquid Propane Blue Flame Vent Free Wall Heater

Dyna-Glo 30,000 BTU Liquid Propane Blue Flame Vent...
  • Liquid Propane Ready (Fuel conversion not permitted).Mounting type:Wall Mount
  • Blue Flame Technology works by convecting heat to warm the air the same way as a central heating system
  • 24, 000-30, 000 BTU's/hr variable heat output for up to 1, 000 sq. ft.
  • Variable control knob offers the most customizable heat settings LOW - 24, 000 BTU MED - 27, 000 BTU HI - 30, 000 BTU
  • No electricity required allows for reliable back-up heating incase of an emergency situation

The Model BF30PMDG-4 propane heaters from Dyna Glo is a 30,000 BTU heater – the highest capacity model on this list. It’s also a state-of-the-art heating appliance ideal for supplemental heating.

Since it’s small and portable, it can be used in the home, cabin, or even when you’re going camping. Or you can try other energy-efficient propane heaters.

The propane heaters are extremely efficient, often reaching 99.9% efficiency, meaning it losses very little fuel during the heating process. Even better, the space heater features multiple speed settings so you can adjust the heating for maximum comfort. This, too, should lower your energy use.

You can also use it as a supplemental heater in other rooms, allowing you to turn down the thermostat for greater energy savings.

The BF30PMDG-4 propane heaters are fitted with multiple safety features, including a built-in oxygen depletion sensor (ODS) that immediately turns off the unit if low oxygen levels are detected.


  • Dependable supplemental heating
  • Manual two heat settings for energy utilization
  • Multiple safety features
  • Quick battery-assisted ignition


  • Base legs sold separately

7. DeLonghi Convection Panel Heater

DeLonghi Convection Panel Heater, Full Room Quiet...
  • Room Heater - Fast, Efficient heat packs 1500 watts of power best for medium to large rooms. Best space heater for bedroom or any room in your home.
  • Versatile Style - Offers maximum performance, combining functionality and design and offers both floor and wall mount options with included kit. Feet are pre-assembled for convenience.
  • This energy efficient space heater saves energy with the ECO PLUS function, automatically adjusting heat and power settings for the most comfortable and economical warmth
  • Built-In Safety Features - Include a thermal shutoff to prevent overheating and an internal tip-over switch that automatically turns the unit off if it falls over
  • Cool Touch integrated controls allow you to easily operate and relocate your heater easily at any time during or after use
  • Long lasting, Improved Heat Distribution - This unit is upgraded with a dual lateral fan system to improve heat distribution and move air more evenly throughout the room warming you up faster.
  • Personalized Comfort Customize to your heating needs with the digital controls, adjustable thermostat, delayed on/off 24-hour timer and multiple heat settings.
  • Helps Prevent Frozen Pipes - When the temperature dips below 41 degrees F (5C), the Anti-freeze setting automatically switches on the heater and can help prevent frozen pipes, especially in basements or vacation homes.
  • Portable Heater - Lightweight, compact, portable unit with convenient carrying handle lets you enjoy warmth in any room in the house
  • A space heater will help save on energy bills by heating only the room you're in, not your entire home.

Panel convection heaters are electric space heaters. They work by warming hot air via a hot element in the panel body. The hot air is then circulated through the room. 

These convection heaters, which are also one of the best wall mounted electric heater for large room, installs on the wall and come with feet to stand on the floor. Whichever installation option you choose, it’s perfect for any application and décor.

Although convective heaters are traditionally less efficient than their radiant heat counterparts, the HCX9115E stands out for a few reasons. One, they convert nearly 100% of the electricity it draws from your home supply into heat. Only the convective heat distribution process results in the loss of some heat. 

More importantly, this heater comes with an ECO function that automatically adjusts power settings for economical heating. It also features a programmable thermostat, a timer, and multiple heat settings making it one of the best efficient wall heaters.

Other features of the unit include thermal cut-off protection, internal anti-tip-over, and anti-free settings. It also has a fan.  


  • 1-year limited warranty
  • Variable-speed control
  • Radiant heat
  • Adjustable thermostat
  • Multiple safety features


  • Led light is a little too bright
  • Makes a few unpleasant sounds

8. Fahrenheit PLF754 Baseboard Heaters

Fahrenheat PLF Series PLF754 Baseboard Heater,...
  • Cool to Touch: The baseboard heater's hydronic design keeps the unit cool so that it is safe to use around children and pets
  • Easy Install: Designed with a wire-way along the back of the heater so that it can be wired on either end.
  • Safety Features: The unit's overheat protection feature prevents the heater from running when its air intake is blocked, reducing fire risk
  • Cleaner Heat: Using convection heat keeps allergens, dust, and bacteria from blowing around the room
  • Perfect Size: This unit measures 34 inches long, 3.5 inches deep, and 9 inches high

Baseboard heaters are some of the cleanest, most efficient space heating solutions. They convert nearly all the electricity drawn from the home’s supply into useful heat. Indeed, many are rated 99.9% efficient. The only downside is that electricity itself is relatively costly to produce. Otherwise, baseboard heaters are excellent.

This particular model from Fahrenheit is a hard-wired space heater that provides gentle, steady heat for superior comfort. It uses liquid-element technology and remains cool to touch throughout the operation period.

The low-profile design makes it usable in various applications, including kitchens, bedrooms, bathrooms, and even living areas. You’ll also love that it starts and stops without the disruptive pop and ping sounds characteristic of baseboard heaters. Above all, it doesn’t use a blower. Therefore, you don’t have to worry about dusty indoor air.

The PLF754 is UL listed for safety and mounts directly on any floor tile or carpet. Thermal cut-off shits off the unit in case of overheating.


  • Extremely efficient heating
  • Remains cool-to-touch
  • Gentle, blower-free air circulation
  • UL listed for safety


Wrap Up

Now that you know how to pick an energy-efficient space heater for large room, feel free to go shopping. We want to stress one thing – efficiency doesn’t end with buying a high-efficiency electric heater. How you use the heater also matters. Make sure to use the heater in a manner that conserves energy.

Above all, don’t forget to consider other qualities of a best space heater, such as low-noise operation, safety features, and warranty. Happy shopping!