Direct Vent Gas Wall Heaters Reviews

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You can’t stand the freezing weather but also worried about your electric heating bills? Try the best direct vent gas wall heaters.

Gas heating systems have become popular over the last few years. They’re more affordable than oil or electricity, dependable, heat your home cleanly, leaving behind a smaller carbon footprint, and may increase the value of your home if you decide to sell.

If you’re interested in gas heating systems for your home, we have included some of the best direct vent wall furnace reviews. Most of these are vented units, so you don’t have t worry about carbon monoxide poisoning.

What is a Direct Vent Gas Heater?

A direct vent gas heater comprises a sealed combustion system that utilizes oxygen from outside for the combustion process and eliminates the process’s byproducts.

The defining features of a direct vent combustion gas heater are that it has a sealed combustion system and a venting made up of two chambers. Other types of vented gas heaters are referred to as B-Vented because they only have one pipe for eliminating the byproducts of combustion.

In direct vent gas heaters, one chamber draws into the combustion area oxygen from the outside. The other chamber eliminates all the byproducts of the combustion process to the outside. The venting may be made either horizontally through a wall or vertically through the roof of the building.

A direct vent gas heater ensures that the indoor environment is completely shielded from the combustion effects.

Neither oxygen from the indoor environment is utilized nor the products of burning ejected within the house. Because of this operation mode, a direct vent gas heater is a reliable, convenient, and safe source of heat.

Are Direct Vent Propane Heaters Safe?

Direct vent propane heaters are relatively safe. The dual venting of this type of vented gas heaters helps to maintain the quality of indoor air.

The heaters do not use oxygen from the indoor environment for the combustion process. Moreover, direct vent heaters have pipes that direct all the byproducts of the house’s combustion process.

The gases and other byproducts are channeled through the vent opening to the outside environment. The burning of propane or any other carbon-based product produces different types of highly poisonous products, including carbon monoxide and sulfur dioxide.

Such gases can pose a danger to people if they accumulate for a long time. Vented gas heaters, in general, solve this problem by channeling the poisonous gases outside the house.

Moreover, direct vent gas heaters are safe because some of the models have inbuilt thermostats for controlling the temperature. The thermostats can lower the temperature of the indoor space for some time.

If used within bedrooms, the thermostats can ensure that the heaters operate at a lower temperature during the night and then increase the heat just before the morning.

Unlike vent free gas heaters, you can safely use your direct vent gas heaters in the bedroom and throughout the whole night.

What is the Difference Between B Vent and Direct Vent?

Although both direct vent and B vent gas heaters belong to the broad category of vented heaters, there are fundamental differences between the two. Direct vent and B vent gas heaters differ in terms of the mode of operation and design.

The venting of direct vent gas heaters has two pipes or chambers. Each of the two pipes of a direct vent gas heater serves a different purpose: one draws in oxygen from the outside of the house while the other channels the flue gases from the heater’s combustion chamber to the outside environment.

The venting system of a B vent heater comprises of only one pipe. The pipe is used to direct the byproducts from the chamber to the outside environment.

Additionally, a direct vent heater has a sealed front because it does not need to draw oxygen from the room’s air. A B vent gas heater relies on oxygen from the indoor environment for the combustion.

Can you Leave a Gas Heater On Overnight?

The rule of thumb is that you should switch off your gas heater when you go to bed. You will be assuming several risks if you leave the gas heater on for the whole night.

Gas heaters produce carbon monoxide from burning propane gas to produce energy. Carbon monoxide is a highly poisonous yet odorless gas.

If it accumulates within a house that has poor ventilation at night, fatalities may quickly occur. Because of the risk of carbon poisoning, you should always remember to put your gas heater off before you go to bed at night.

More so, if you leave the gas heater n for the whole night, the air in the room may become very dry because of the loss of humidity. Breathing very dry air may cause nasal problems. However, some direct vent gas heaters have advanced systems that contain humidifiers and thermostats.

Although such types of gas heaters can run over the night without posing much danger to sleeping individuals, it is nevertheless advisable to ensure that your gas heater is off when you go to bed.

Things to Consider When Buying a Direct Vent Propane Heater

  • The venting styles. Different brands of direct vent propane heaters can be vented in various ways. Whereas some allow only horizontal venting through the building’s wall, others can be vented vertically through the roof. For brands that can be vented through the roof, the vent extension is designed to prevent moisture from seeping through. It would be best to consider the mode of venting because it determines how you will install your heater.
  • Operations and maintenance. Maintaining a direct vent gas heater involves a lot of processes, including cleaning all the components. Additionally, some brands have highly advanced systems that require to be carefully managed.
  • Aesthetic value. The design of a direct vent gas heater can enhance the overall décor of your indoor space. Consider your interior decoration style when purchasing a direct gas vent heater for installation in the living room.

Safety when Using a Direct Vent Heater

  • Get professional help during the installation process. Hiring a qualified HVAC technician may go a long way in preventing accidents that may occur due to the poor installation of your heater.
  • Regular maintenance. All direct vented gas heaters have specific maintenance procedures. Ensure that you carry out all the routine maintenance and cleaning processes to keep the heaters in excellent shape.
  • Keep flammable materials far away from the heater. Combustible materials such as plastics, fabrics, and papers can easily catch fire if they contact the hot surface of heaters. As a general precaution, ensure that they are at least a few meters away from your gas heater.
  • Check for inbuilt safety features and certifications. Heaters certified by leading institutions such as the Underwriters Laboratories (UL) are safer than those that are not. Check for brands with all the standard inbuilt safety features to minimize the chances of accidents occurring when you are using them.

Direct Vent Gas Wall Heaters Reviews

1. Rinnai EX22CT Direct Vent Wall Furnace

Rinnai EX22CTWN Direct Vent Wall Furnace, 22k BTU
  • Rinnai EX22CTWN Direct Vent Wall Furnace - Natural Gas
  • Input Range 8,200 - 21,500 BTU/hr
  • Capable of heating your whole home or complementing your existing heating system (Heating area varies by geographic region and location of install within the home)
  • Control panel locking feature prevents unintended operation – especially by children.
  • Programmable thermostat in celsius or fahrenheit that consistently detects temperature changes of less than 1 degree
  • Includes wall thermostat

Although the Rinnai EX22CT has one of the highest output levels of up to 21,500 BTUs per hour, its most notable feature is the aesthetic value.

The heater has a modern design with a slim look that blends perfectly with all interior décor styles. You can use the heater as the focal point in your living room by mounting it at a strategic location on the wall.

It is relatively easy and convenient to use this heater. It has a large control panel with all the knobs that you need to adjust its heating capacity and change the general performance. Besides, the control panel can be locked to prevent children from accidentally tampering with the heater’s operation.

The only notable drawback of this direct vent gas heater is that its installation and maintenance procedures are quite detailed.

You may need a certified HIVAC technician’s services to help you get the venting right during the installation. Nevertheless, this may be a small price to pay, considering the heater’s heating capacity and aesthetic value.


  • Significant heating capacity of up to 21,500 BTUs per hour
  • Easy to use with a lockable control panel
  • Great aesthetic value, thanks to a modern and sleek design


  • The installation and maintenance processes require technical assistance

2. Martin Direct Vent Propane Wall Heater

MARTIN Direct Vent Propane Wall Heater with Room...
  • WARM, ADJUSTABLE HEAT - Keep living or work spaces heated with a direct vent wall heater with room thermostat that lets you monitor your heat dispersion.
  • EXCLUSIVE GLASS CERAMIC WINDOW - A true market exclusive accessory, ONLY available on 11,000 Btu and 20,000 Btu indoor propane gas units
  • STYLISH & CLEAN ENERGY - A sleek fireplace design, our direct vent gas heater produces safe, clean energy that's economical and aesthetically pleasing.
  • QUICK & EASY INSTALLATION - Connect our propane wall heater direct vent to a gas fitter and it will heat your living space effectively with low maintenance required.(The wallʼs thickness cannot be less than 4-1/2" (11.5 cm) nor can it exceed 12-5/8" (32 cm).)
  • CERTIFIED QUALITY - Heavy-duty grill made with die-cast aluminum and glass ceramic window for more safety, Product is certified for use in the USA and Canada.

The Martin Direct Vent Propane Wall Heater has an average heating capacity of only 11,000 BTUs per hour. However, this heater has many other features that make it a remarkable companion for providing supplemental heating in your home or even workplace.

Its unique blue flame, a sleek design, and a noticeably small footprint are visually pleasing. It has a unique glass-ceramic window that not only enhances the overall safety of the heater but also the general aesthetic value. You can’t go wrong if you choose to use this small but effective heater in any room in your home, including the living room.

The inbuilt thermometer of this heater is quite precise in reading the ambient temperature. You can confidently program your Martin Direct Vent Propane Wall Heater to operate at a specific temperature range, and you will not be disappointed.

However, as it is the case with many brands of direct vent gas heaters, the installation process is detailed and complex. It would be wiser to get a technician to handle the process than trying it on your own.


  • Highly durable because of the use of die-cast aluminum for the body
  • Aesthetically pleasing because of the sleek design and glass-ceramic window
  • Great controls for ease of use and precise heating


  • Complex installation procedure

3. US Stove AGDV12L Ashley Direct Vent 11,000 BTU Propane Gas Heater

US Stove AGDV12L Ashley Direct Vent 11,000 BTU...
  • Natural gas heater safe to use anywhere, including in bathrooms and bedrooms
  • Cabinet remains cool to the touch, with heat outlets in front and on top
  • Includes all direct vent pipe for typical installation, as well as wall thimbles
  • Heats up to 275 square feet, safety valve shut off
  • Approved for use in mobile or modular homes, approved for sale in WA and CA

The US Stove AGDV12L is built with the safety needs of a home in mind. It has all the standard and advanced safety features that you would expect to find in a direct vent heater ideal for home use.

The heat outlets are conveniently positioned on the top side of the heater to minimize the chances of kids touching them and ensure the effective distribution of heat.

Furthermore, the surface of the heater remains cool even when the device operates for a long time. If pets and kits accidentally touch it, the chances of them getting burned are minimal.

As it is the case with all products, the US Stove AGDV12L is not without weaknesses. Notably, the heater does not come with some essential accessories, such as a fuel conversion kit. You will have to incur the extra costs of obtaining one to use the heater to warm your home conveniently.


  • Ease of use with one-dial controls and a piezo ignition system
  • A programmable and inbuilt thermostat for accurate zonal heating
  • Advanced safety features


  • The fuel conversion kit is sold separately

4. Williams Comfort Gas Wall Furnace

If you are looking for a direct vent heater with a compact design and highly-durable, then the Williams Comfort Gas Wall Furnace may be the right choice.

The use of high-quality aluminum for the body and the coating of the combustion chamber in ceramic enhance the heater’s durability.

You will get value for your money because you will not have to replace the heater soon. However, the heater requires heavy maintenance procedures for it to remain functional.

This heater has been certified as of high quality and safe for use according to the ANSI standards. It has various safety features, including cool-to-touch and the automatic shutoff system.


  • Highly durable because of the use of quality materials for the combustion chamber and body
  • It bears the American National Standards Institute’s (ANSI) certification for quality and safety
  • Small and compact design for small indoor spaces


  • Requires heavy maintenance to remain in good shape

5. Rinnai EX11CT Direct Vent Wall Furnace

Rinnai EX11CTP 11k BTU Direct Vent, Propane
  • Rinnai EX11CTP Direct Vent Wall Furnace - Propane
  • Input Range 5,700 - 11,000 BTU/hr
  • Capable of heating your whole home or complementing your existing heating system (Heating area varies by geographic region and location of install within the home)
  • Control panel locking feature prevents unintended operation – especially by children.
  • Programmable thermostat in celsius or fahrenheit that consistently detects temperature changes of less than 1 degree
  • Includes wall thermostat

The Rinnai EX11CT is smaller and more compact than the EX22CT. It also has a lower heating capacity than that of the bigger model.

However, this direct vent heater can be a great solution if all you are looking for is a reliable source of supplemental heat for small indoor spaces. More so, it has a modern design and finish that blends perfectly with all contemporary and classic décor types.

You can program the heater to maintain the room temperature according to your preference, thanks to an accurate thermostat. It is also easy to use the controls to adjust the heater’s performance or the piezo ignition system to switch it on.

Although this heater can be vented either through the wall, the overall installation process is usually too detailed to be handled by a person who does not have technical skills.

Besides, maintaining the heater may be a tall order for you if you are not highly experienced in maintaining direct vent gas heaters.


  • Customized heating using the programmable thermostat
  • Smaller and compact design than that of the older and larger models
  • Easy to operate using the one-dial controls


  • Requires heavy maintenance
  • The installation process is detailed and complex

1 thought on “Direct Vent Gas Wall Heaters Reviews”

  1. The biggest CON’s that the author left out? Which of these can continue to heat if the power goes out. The biggest PRO’s is if it can run without being plugged into a power outlet

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