Buyers Guide & Information

Best Grow Room ACs

We have reviewed the best grow room air conditioners on the market. Compare the top rated ACs for grow tents and cultivation.

Every grow tent owner wants to provide the best indoor environment for their plants to grow and thrive. They know that to get a high yield, they’ll have to ensure optimal indoor conditions to perfect the temperature, ventilation, lighting, and humidity.

Let’s learn more about the air conditioning needs of your grow tents and then explore the 7 best grow room air conditioners.

Understanding Grow Rooms

Here’s a fact: grow rooms require efficient ventilation so that indoor plants can thrive and flourish.

Outdoor plants have sunshine, light breezes, precipitation, and evaporation to help them thrive and grow. But indoor plants usually don’t get to enjoy these amenities.

But if you want them to grow well, you’ve probably already found other ways to give them what they need. For example, natural evaporation and breezes can be replicated using fans, sunshine with grow lights, and precipitation by watering systems.

You’ll have to ensure that your grow room has both the extraction system and a fan so that fresh air is always available for the indoor plants to flourish like the outdoor plants.

How Grow Room ACs Work

Air conditioning is one of the best and most efficient methods of climate control for grow rooms.

Since the grow tents are a perfectly sealed environment, the primary concern is heat. This makes ACs the perfect addition in most ways.

ACs help create the right temperature within the grow tent and exhaust the hot air produced by the heating sources such as pumps, generators, blowers, lighting systems, ballasts, etc.

With the right grow room AC units, the humidity and temperature issues will be the least of your concerns when cultivating indoor plants.

Grow Room ACs Compared

Model Area EER BTU Price
Pioneer 500 sq. ft. 19.5 12000 Check Sylvane

Check Amazon

Whynter ARC-14S 500 sq. ft. 19 14000 Check Sylvane

Check Amazon

Movin Cool Classic Plus 14 450-500 sq. ft. 10.2 13200 Check Amazon
Black & Decker BPACT 12WT 250-300 sq. ft. 9.61 12000 Check Amazon
Midea MPF10 CR81-E 150 sq. ft. 8.9 10000 Check Amazon
MrCool Advantage 1000 sq. ft. 17 24000 Check Sylvane

Check Amazon

Frigidaire FFRE 0833S1 350 sq. ft. 12 8000 Check Amazon

*EER = Energy Efficiency

*BTU = British Thermal Units

Things To Consider When Buying A Grow Room

AC Type

Generally, there are three types of ACs: split, window, and portable.

The split type AC is quite strong and can easily cater to grow rooms of about 500 sq. ft. These units, when installed in a grow room/tent, work as a permanent fixture.

Additionally, the window AC is also a viable option for medium to large-sized grow tents. They’re affordable and can be installed easily.

But if your grow tent is relatively small, you may not want to splurge on these two options. In such a case, portable ACs are your best bet. They’re lightweight and easy to operate.

Cooling Power Vs. Area Coverage

No matter what AC type you choose for the grow room, it’ll measure the cooling power in British Thermal Units (BTU). The higher the cooling capacity of the air conditioner, the larger and bigger coverage area it’ll cool. As the unit’s cooling power increases, so does its energy consumption.

To get the most cooling, look to the manufacturer’s manual and see the recommended coverage area for the AC. Consider this:

  • 5000 BTU for 150 sq. ft.
  • 6000 BTU for 200 sq. ft.
  • 7500 BTU for 250 sq. ft.
  • 9000 BTU for 300 sq. ft.
  • 14000 BTU for 500 sq. ft.
Size & Weight Of The AC Unit

Before buying the unit, make sure your grow room has adequate space for it to be placed or mounted. This is even more important when the AC you’re buying is either split or window.

The AC units should be of the proper weight and size for your grow room. If this isn’t the case, the grow room will either get super-cooled or won’t cool at all – either way, it won’t be suitable for your plants.

Energy Efficiency Rating (EER)

Another factor that you need to consider when purchasing an air conditioner for your grow room is the unit’s Energy Efficient Ratio or EER.

The EER rating tells you about the air conditioner’s energy efficiency level. The greater the EER ratings, the higher efficient and productive the unit is.

Installation Requirements

Most air conditioners, including portable ACs, vent hot air during cooling. This air is vented out through the exhaust hose and out to the drop ceiling, window, sliding glass, or through the wall.

Plus, these grow tent AC units come in either dual or single hose for releasing hot air and extracting fresh air to cool.

If the AC unit includes the dehumidifying feature, you should also look at how it handles the moisture it removes.

Voltage Requirements

Most of the grow tent ACs operate on the following volts:

  • 115 volts
  • 125 volts
  • 220 volts

Typically, air conditioners with cooling power under 15000 BTU work on 115 and 125 volts. On the other hand, ACs with cooling power exceeding 15000 BTU runs on 220-volt.

You’ll need an expert technician to help you with electrical wiring. Plus, if you’re confused about which plug face to use for the unit, check the manufacturer’s manual or look to the NEMA classifications about several plug faces.

Performance Features
  • Heat mode: offers extra warmth during the winter season
  • Sleep mode: quieter and consumes less power
  • Multiple Fan speed: allows you to choose from various fan speeds
  • Auto-setting: allows you to set your desired grow room temperature
  • Remote control operation: provides you the opportunity to set and select your desired functions remotely
  • Dehumidifier: removes excessive moisture from the grow tent
  • Timer settings: lets you program the unit to turn off or on up to 24 hours ahead
Ease Of Installation & Maintenance

Grow room air conditioners are designed precisely to be mounted either in the window opening, near a window, wall-mounted, or through-the-wall. While wall-mounted ACs require professional installation, the rest is easy to install.

As far as the maintenance of these units is concerned, you need to wash them once a month. Clean the unit’s air filters thoroughly.

Plus, make sure the installation works appropriately to give optimal efficiency. In case you’ve got a portable AC, drain it regularly.


Another thing that you should notice before buying AC for your grow room is the warranty. In the long run, your AC might not work as it should, but a warranty will save you from spending hundreds of dollars on repair or replacement.

The average warranty period for grow tent air conditioners is one-year for parts, with a three-year warranty on the unit’s compressor.

7 Best Grow Room Air Conditioners Reviewed

1. Pioneer Mini Split AC

 Best Ductless Mini Split Air Conditioner for Grow Room
Energy Efficiency 19.5
BTU Rating 12000
Weight 19 lbs.
Dimensions 31.5 x 7.4 x 11.6 inches
Coverage Area 500 sq. ft.
Installation Type Professional installation (208-230V)

If you want an air conditioner that allows you to cool or heat the grow room irrespective of the weather outside, look no further than pioneer 12000 BTU – the best ductless mini-split air conditioner for grow rooms you’ll ever find.

With the help of 12000 BTUs per hour, this mini split is perfect for grow rooms with a capacity of about 500 sq. ft.

The model is designed specifically for money-saving operations and high efficiency and comes with 11 EER and 19.5 SEER ratings.

We particularly liked this air conditioner because you can easily set and control your desired settings for the grow room. Use the LCD wireless remote control to choose from different modes such as dry, cool, fan-only, and heat.

However, if you want the device to decide what room temperature is perfect for your grow room, just turn it to the auto-mode.

Plus, it comes with an adjustable airflow feature that allows you to direct the warm or cool air from the unit to where it’s needed the most with horizontal and vertical louver adjustments. This is why we’ve termed this appliance as the best sealed grow room air conditioner.

Moreover, it offers premium features such as multiple fan speeds (high, medium, and low), quiet operation (since the compressor is located outside), auto restart, wide setting range (62 to 90°F), 16 ft long lines (allows you the opportunity to place it anywhere in the grow room), and a wall-mounted design.

All these features make the Pioneer 12000 BTU the perfect air conditioner for the grow room.


  • Complete cooling, heating, dehumidification, and ventilation system
  • ETL certified
  • LCD wireless remote
  • Auto-restart
  • Multiple fan speed


  • Complex to install (requires professional installation)

2. Whynter ARC-14S

 Best Dual Hose Portable Air Conditioner for Grow Rooms
Energy Efficiency 19
BTU Rating 14000
Weight 80 lbs.
Dimensions 16 x 19 x 35.5 inches
Coverage Area 500 sq. ft.
Installation Type Easy Window installation (115-120V)

Are you looking for an air conditioner that can provide cold air to your large grow room seamlessly? If so, the Whynter ARC 14S fits the bill.

This unit is by far the best dual hose portable air conditioner grow room you’ll ever find thanks to its dual hose system and 14000 BTU that can cool an area of about 500 sq. ft. easily.

Designed with eco-friendly technology, the unit uses CFC-free R-32 refrigerant and is energy efficient – it consumes extremely less-energy compared to most other usual air conditioners. Plus, it has lead free components.

What we particularly liked about this electrical appliance is that it comes with an auto-drain technology that is fully self-evaporative in most conditions and can cool large spaces faster than most other machines.

This is the reason why we’ve also labeled Whynter ARC 14S as the best large portable air conditioner for grow rooms.

Also, it offers four different operating modes to select from. You can also set up your desired grow room temperature using heat, cool, dehumidifier, and fan modes.

Moreover, the Whynter 14S air conditioner provides hassle-free operations. It gets auto-shutoff when the tank gets filled and auto-restart from the same position it left when the power went out.

Plus, the unit’s carbon and washable pre-filter helps improve the air quality by removing smoke and large dust particles from the grow room.


  • 3 operational modes
  • Speedy cooling
  • Multiple fan speed
  • Digital control
  • Low power consumption


  • Noisy Operation
  • A bit costly
  • Slightly heavier model than competitors

3. MovinCool Classic Plus 14

Best Commercial Grow Room AC
Energy Efficiency 10.2
BTU Rating 13200
Weight 166 lbs.
Dimensions 26 x 19 x 41inches
Coverage Area 450-500 sq. ft.
Installation Type Easy installation (115)

If you’re searching for better performance and high control air conditioner for your commercial grow room, then your search stops with the MovinCool Classic Plus 14 – the best in the Classic series so far.

We tagged this unit as the best commercial grow room air conditioner for its capacity to cool large areas. It has a remarkable 13200 BTU, which helps the air conditioner provide effective cooling to spaces of about 450-500 sq. ft. even under extreme conditions.

There’s also a unique digital temperature and process controller features that allow you to set your desired grow room temperature. So, if you’re tired and want to avoid manual operating air conditioners for your commercial grow tent, this is the best electrical appliance to go for.

Moreover, the MovinCool Plus 14 air conditioner offers an easy set up with no extra equipment needed. Just place the unit near the window where it has a power source such as a socket, plug it in, and off you go.

Furthermore, it provides non-stop cooling to your grow tent even under extreme environments (up to 113°F, to be precise).


  • Portable
  • 5-gallon tank capacity
  • Two fan speed
  • Digital control
  • Adjustable louvers


  • A bit pricey


 Best Mid-Size Portable Air Conditioner for Grow Rooms
Energy Efficiency 9.61
BTU Rating 12000
Weight 59.9 lbs.
Dimensions 17.1 x 13.8 x 28.1 inches
Coverage Area 250-300 sq. ft.
Installation Type Easy installation (115)

The Black+Decker BPACT12WT offers constant, quick, and effective cooling to grow rooms with a capacity of about 250 to 300 sq. ft. Due to this narrow cooling coverage, we’ve named this air conditioner in our review as the best mid-size portable air conditioner for grow rooms.

This air conditioner includes three different types of operational modes for your ventilation and cooling needs. This means you’ve got the option to select either fan, dehumidifying, or cool mode.

It’s quick and straightforward to install. All you’ve got to do is place it within the ambit of the sliding or the double-hung window of the mid-size grow room. Now, attach the hose and window adapter before you plug it in, and that’s all!

The unit also comes with easy to clean and use operations. You can set your desired grow room temperature through its easy to use remote control and LED display system, as well as a 24-hour timer.

Plus, washing the filter isn’t very hard – just slide it twice per month and deep wash it using tap water before putting it back.


  • Three operating modes (AC, fan, and dehumidifier)
  • Easy to clean
  • Easy to install
  • Digital control
  • Eco-friendly


  • A bit noisy


 Best for Small Grow Tents
Energy Efficiency 8.9
BTU Rating 10000
Weight 65.2 lbs.
Dimensions 17.1 x 13 x 28.3 inches
Coverage Area 150 sq. ft.
Installation Type Easy installation (115)

If you’re looking for an air conditioner to cater to your small grow room, then MIDEA MPF10CR81-E is the perfect fit. With the cooling power of 10000 BTU and coverage of about 150 sq. ft., this unit is quite possibly the best small grow room air conditioner in our reviews.

It comes with easy digital control operations. The unit includes a user-friendly LED display that you can read effortlessly and contains a compact controller (with batteries) to set the time, mode, and temperature for you.

It has a twenty-four by seven adjustable timer feature that allows you to cool small spaces at a temperature ranging from 62°F-90°F. You can also select from three different operational modes, such as dehumidification, cooling, and fan.

This electrical appliance is known for its portability. It includes wheels that provide the unit greater flexibility to move anywhere and offer to cool to that particular area. It’s always challenging to move these window units, and the problem gets worse if the grow room is small.

Thankfully, you won’t find this problem with MIDEA MPF10CR81-E – a reason why we’ve labeled it as best for small grow rooms air conditioner in our reviews.

Moreover, it comes with easy installation and a washable and reusable filter.


  • Three operating modes (AC, fan, and dehumidifier)
  • Easy to clean
  • Easy installation
  • Digital control
  • Eco-friendly


  • No heating capacity

6. MrCool Advantage

 Best Large Mini Split AC for Grow Rooms
Energy Efficiency 17
BTU Rating 24000
Weight 30.2 lbs.
Dimensions 28.43 x 7.36 x 11.42
Coverage Area 1000 sq. ft.
Installation Type Professional installation (230)

If you’re seeking an ideal solution to heat and cool your large grow room even under extreme conditions, choose MrCool Advantage over the rest. With its 240000 BTU cooling power, this is the best large mini split AC for grow rooms of about 1000 sq. ft.

The 17.0 EER rating and 3-in-1 operational modes have allowed you to enjoy non-stop efficient comfort throughout the year. Due to its 24,000 BTU, you can attain temperatures from 62°F-90°F easily under the cooling mode and warm the space when the temperature drops significantly, thanks to the built-in heat pumps.

Plus, you can also choose the dry mode to remove the excess moisture if there’s too much humidity in the grow room.

What we particularly liked about this unit is that it has a sleep mode feature that consumes less energy by increasing the temperature at night while you’re sleeping.

The air conditioner includes four fan speeds that provide non-stop airflow to the room. Moreover, the unit also features an auto-restart option. So if you face an electricity breakdown or power outage, it’ll continue with the same settings once it restarts.


  • 3-in-1 operational mode (cool, heat, and dehumidifying)
  • Embedded Wifi control
  • Auto-restart
  • 2-year warranty
  • Several fan-speeds


  • Wireless remote may not operate properly
  • Professional installation required

7. Frigidaire FFRE0833S1

 Best Window AC for Grow Rooms
Energy Efficiency 12
BTU Rating 8000
Weight 52 lbs.
Dimensions 18.5 x 17.5 x 13.4 inches
Coverage Area 350 sq. ft.
Installation Type Easy window mounted (115)

If you’ve got a small to medium-sized grow tent/room and are looking for a window-mounted air conditioner, choose Frigidaire FFRE0833S1 – the best window ac for grow rooms with a coverage space of about 350 sq. ft. and about 8000 BTU cooling power.

It comes with a convenient controlling system. The remote includes an embedded thermostat feature that allows you to control and monitor the grow room settings anywhere from the house without going near the air conditioner.

This Frigidaire model is Energy Star approved and has a built-in power saver mode. This means that you can operate the unit as much as you like without worrying about sky-high utility bills since it consumes low power and helps you cut down on operating costs.

It also allows you to switch to different settings fairly quickly – use the remote control to choose your desired temperature and flow, etc.

Moreover, cleaning the Frigidaire mini-compact air conditioner is pretty easy too. Wash the antibacterial filter effortlessly due to the unit’s tilt-out frame and wipe the outer unit occasionally with a damp cloth – that is all you need to do.


  • Affordable
  • One year warranty
  • Two fan speed
  • Two cooling speed
  • Energy Star


  • A bit noisy
  • Average durability

Types Of Air Conditioners Suitable For Grow Tents

Portable Air Conditioner

This is a lightweight air conditioner suitable for small to medium-sized grow tents/rooms. These units are durable, reliable, and easy to move anywhere within the room. It’s an ideal air conditioner for beginner growers.

All new growers will find the two types within the portable air conditioners, i.e., one and two tube air conditioners.

Ductless Mini Split System

This ductless mini-split system is best for large grow tents/rooms mainly because it’s quite dense. This air conditioning unit can provide efficient and effective cooling to more than just one space, which is why these units are preferred for large grow tents. They offer an increased temperature control system than most other air conditioners in the market.

Window Mounted AC Units

Window mounted AC units are by far one of the most commonly used air conditioners. However, these are slightly complicated to install and use as compared to portable air conditioners.

They’re perfect for medium to large-sized grow tents/rooms. These air conditioners are known for enhanced cooling powers.

Commercial Air Conditioners

A commercial air conditioner is best for large grow tents/ rooms such as greenhouses and indoor gardens. It is one of the biggest air conditioners in terms of size and is installed on the top of the building or room. It’s perfect for commercial and professional use.

Determining The Right Size AC For Your Grow Room

Determining the right size AC for your grow tent/room depends on two things: the size of the grow tent/room and heat sources in the room.

To know the right size, you need to calculate the heat produced from heat sources within your grow room/tent (BTU/hour). After that, look at the AC you intend to purchase and see whether it offers the same BTU/hour cooling power you require.

If you’re still confused about what BTU your AC should have to make it the right fit for the grow tent, understand that for every one watt of high-pressure sodium vapor lights (HPS), you’ll need 4 BTU cooling power.

Here’s the grow room air conditioner calculator formula to find the right size AC for your grow room:

 4 BTU x total watts (grow room equipment uses) = total air conditioning BTU you’ll need.

So, let’s assume that you’re using 6000 watts in a grow tent (CO2 burner: 1000W, HPS lights: 3500W, and dehumidifier: 1500W), therefore as per the equation, you’ll need 24000 BTU for your groom room.

Setting Up AC Units In A Growing Room

Setting up AC units in a growing room is entirely based on the kind of air conditioner you have.

For example, if you’ve got a portable air conditioner, installation worries are pretty much non-existent – just plug it in, and it’s ready to work.

But, window-mounted portable air conditioners require some installation, though far from complex.

Moreover, the ductless mini-split system is easy to install. All you’ve got to do is search a passageway for the tube of the unit and a couple of tools and equipment for indoor installation.

Usually, the bigger ACs need expert help in installation and maintenance.

As for the commercial ACs, the room needs to be specifically built to accommodate them – these can’t be an afterthought but must be considered during the design process. This is also true for some ceiling-mounted air conditioners.

Even though the installation of every AC unit differs, here are some general grow room AC setup guidelines you should follow:

  • Always make sure to place the air conditioner in your grow tent/room near the power source like a socket.
  • Don’t use power strips or power sockets. The manufacturers also discourage the usage of extension cords of other house appliances for this unit. This is because using a different extension cord or plug might damage the AC or result in power overload.
  • While installing, take care of the ventilation of your grow tent/room.
  • Lastly, we’ve told you from the get-go that installations vary from unit to unit; therefore, it is wise to check your ACs manual instruction for proper installation and working.

People Also Ask (FAQ)

What’s The Ideal Temperature For A Grow Room?

The ideal temperature for a grow room is based on several factors, such as climate, weather, number of plants, and grow room size, etc. Despite this, experts recommend a temperature ranging between 60-80°F.

What Causes High Humidity In Grow Tents?

High humidity in grow rooms can be a result of harsh lighting, increased transpiration, open-water surfaces, and overwatering, etc.

What’s The Best Way To Ventilate A Grow Tent?

Although there’re many ways to choose from, the most efficient of all (like we’ve mentioned earlier in our review) is by using the right-sized air conditioner.

What Else Do I Need In My Grow Tent To Help With Ventilation Aside From Air Conditioners?

Besides ACs, you can use oscillating fans, exhaust fans, and intake fans to ensure proper air circulation in your grow room.

How Long Should I Run ACs For in Grow Tents?

How long should you run an air conditioner for the grow room is based on two things: your grow tent size and the size of the exhaust of your unit. However, you should run it every 15 minutes off and on to ensure the ideal environment.

Do I Need A Professional HVAC Technician To Install A Grow Room Air Conditioner?

Though most AC units are easy to install and don’t require professional assistance, some larger ACs with increased cooling capacity and coverage area mandate an experienced HVAC technician to do it for you.


There you have it – the best grow room air conditioners in the market!

All the products we’ve reviewed have incredible BTU cooling power and can help you create the ideal environment for your indoor plants. However, our top pick is the Pioneer model on our list.

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