5 Best AC Units For Garage With No Windows

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If you have a windowless garage, you know how challenging it can be to keep it cool during the sweltering summer. Windows provide rooms with light, warmth and ventilation. Without a window, your garage will feel stuffy and extremely hot because hot air gets trapped without any place to escape.

If this is your situation, you need to consider ac units for garage with no windows. However, before you decide to purchase a garage air conditioner, it’s important to consider how important this room is to you and how much time you spend in it.

If it is important, you have the choice of 4 units, including mini-split systems, wall ac units, portable ac that doesn’t use a hose, and evaporative coolers.

5 Best AC Units For Garage With No Windows


1. Pioneer WYS012A-19 Wall Mount Ductless Mini Split Heat Pump

If you need efficient, all year round climate control in your home, then the Pioneer WYS012A-19 mini-split system is just right for you. It churns up 12,000 BTUs of cooling/heating power and has a 19 SEER energy efficiency, which is perfect for rooms and light commercial spaces up to 500 square feet.

It has a beautifully designed front panel with a dimmable LED display, and a full feature remote control with a large LCD back-lit screen for smooth operation in the dark. It also has a 3-speed fan motor that operates quietly on all speeds and automatic-swing air discharge louvers that ensure even cooling/heating for your space.

This Pioneer unit comes with a full installation kit, which includes a refrigerant line set. It has four available line set lengths, so ensure that you choose the length that best suits your needs. (16 ft, 25 ft, 33 ft, 50 ft).


  • Operates quietly
  • It has a 19 SEER rating
  • It comes with a remote.
  • 2-year warranty for parts
  • 5-year warranty for the compressor.
  • It has removable and washable air filters for easy maintenance.


  • No DIY Installations.


2. Senville SENL-12CD Mini Split Air Conditioner Heat Pump

The Senville SENL-12CD is an excellent appliance addition for your home to serve your cooling and heating requirements. This unit packs 12,000 BTUs of cooling/heating power, which is perfect for cooling spaces between 450-750 square feet.

It features a variable inverter compressor that limits the amount of energy it uses. The variable inverter, coupled with a 19 SEER rating and 9.0 HSPF, this unit ensures your electricity bills stay on the lower side. You can also select “Eco mode” to run the unit at a standard 75°F to conserve even more energy.

This unit operates quietly, with the maximum indoor noise levels being at 41dB, which is almost equal to the sound level of an average conversation between two people in a quiet room. It has several features, including variable temperature settings from 62° – 86° and a 24-hour timer that allows you to preset the times that you need the air conditioner running. You can select operation modes and AC functions using the remote control from anywhere in the room.

The Senville 12CD installs quickly, and a full 16-foot installation kit comes with the purchase.


  • It has four operational modes – cooling, heating, dry, and auto mode.
  • Sleep function
  • The indoor unit has a 3-speed fan
  • Operates quietly
  • It comes with a 5-year limited warranty
  • The purchase includes a full installation kit.


  • Installation requires a ¼” by ⅜” line set kit, which is not included during purchase.
  • It requires professional installation.


3. Koldfront WTC8002WCO 8,000 BTU 115V Through The Wall Air Conditioner

The Koldfront WTC8001WCO is a powerful air conditioner with 8,000 BTUs cooling capacity ideal for spaces between 300-350 square feet. This unit installs through the wall; hence it is perfect for rooms without windows or rooms where you need your windows clear.

It has several distinct features that make it energy efficient. Sleep mode keeps you comfortable all night, and the energy-saving function keeps the compressor running when needed only, to keep your energy bills at a minimum.

It has a three-speed fan and adjustable air louvers that allow you to direct the airflow to where you need it. It also has an easy-to-clean air filter that keeps only fresh and clean air circulating in your home.


  • Through the wall installation
  • Dehumidification capacity of 2.1 pints per hour
  • Control panel with digital display
  • Temperature Range: 62° F – 86° F
  • Uses the standard NEMA plug type
  • Washable air filters
  • 24-hour timer


  • The required wall installation sleeve is sold separately.


4. BLACK+DECKER BPACT08WT Portable Air Conditioner

The Black + Decker BPACT08WT is a lightweight 8,000 BTU portable ac that can cool spaces that are atleast 15 inches by 20 inches. It is best suited for storage spaces, garages, small bedrooms, and studio apartments. 

It has three operation modes – air conditioning, fan-only mode to circulate air and dehumidification mode to remove moisture from the air without cooling. It also has a multi-speed fan and 4-way airflow directions to give you total airflow control.

This ac has a built-in self evaporating system, which means there is no bucket to empty hence hassle-free maintenance. It also comes with a full feature remote control that allows you to select between operation modes from anywhere in the room.

This Black + Decker unit has rolling caster wheels that make it easy to move from one room to another. It is easy to install, and it comes with a full installation kit that includes an air exhaust hose, a water drain hose, hose adapters, a window casement, and a detailed manual to guide you through installation.


  • It has a self evaporating system
  • Washable slide-out filter.
  • 24-hour timer
  • Sleep mode
  • Three operating modes


  • The exhaust hose is short (4ft and 11inches) 


5. Honeywell 525-729CFM Indoor Outdoor Portable Evaporative Cooler

The Honeywell CO60PM is a powerful evaporative cooler that can serve spaces up to 850 square feet. Equipped with a 15.9-gallon water tank, an airflow of 1540 CFM, and oscillating louvers, this unit ensures fast and thorough cooling of your space.

It features a continuous water supply connection with a built-in overflow protection system so that you can leave it connected to any ordinary water hose for a long time without water overflowing. It also has a durable weather-resistant exterior that holds up during extreme outdoor conditions like heavy rain or intense sunlight.

The Honeywell CO60PM has a 3-side honeycomb cooling media that ensures cool air reaches a wide area. This way, you don’t have to sit on one side of the unit to feel its cooling effects. It also has durable rolling caster wheels so you can easily move it to needed areas.


  • It has a large water tank (15.9 gallons)
  • It has a continuous water supply connection for non-stop cooling
  • It has an ice compartment for an extra cool breeze
  • Triple-sided honeycomb cooling media
  • Powerful 16-inch fan blades
  • It has a weatherproof and UV resistant exterior.


  • It has no air filter.


Most garages are poorly insulated, and for this reason, hot air is trapped, making the room unbearable during summer. While you can try other ways to stop the heat from entering your garage, I’d recommend using ac units for garage with no windows.

Not all air conditioners are suitable for windowless air conditioners, which is why mini-split systems are the best choice. They are a little expensive than other ac units, but they are more efficient and offer all year comfort.

If you’re on a budget, you can try wall air conditioners or swamp coolers, especially if you live in extremely humid areas. You can also use a portable ac unit without exhaust hose, but make sure you have basic ac installations skills to vent it through a wall, dryer vent, or drop ceiling.