Best Portable Air Conditioners for Grow Rooms: Keep Your Grow Rooms Cool!

Best Portable Air Conditioners for Grow Rooms Keep Your Grow Rooms Cool!

Growing a marijuana plant requires a lot of effort on the grower’s part. First-time growers often find growing weed to be quite a challenging task, but once they start getting into the groove, they realize it isn’t really that difficult a task. With time, growers realize that if they add certain extra elements to their grow room or their grow tent, they can get a better yield as well as care for their plants better. Portable air conditioners are one such device which will help ensure that the overall temperature of your grow room remains lower.

Over the course of this article, we shall be taking a closer look at why do you need an air conditioner inside a to grow room, what are the benefits of using an AC for the plants, as well as why grow rooms tend to heat up! We shall then take a detailed look at the product reviews for the four best portable air conditioners for grow rooms that you can buy off Amazon right now, followed by a look at the ‘buyers guide’ for those looking forward to buy an AC for their grow rooms. 

Why Do Grow Rooms Heat Up?

Grow rooms tend to heat up primarily because of grow lights, which are the biggest source of heat (apart from a heater) over there. The use of grow lights is critical for growers because when you are growing your plants indoors, you need them to replace the natural light of the sun. However, lights tend to generate heat, especially if you are using lights such as High Pressure Sodium (HPS) grow lights or Metal Halides (MH) which are somewhat older compared to LED grow lights, which tend to be cooler. 

However, even the LED grow lights do emit heat and they too need proper heat dispersion techniques. This heat that comes out of the grow lights causes the grow room to heat up, and the more the number of grow lights in the grow room the hotter the temperature will be! Another thing is that sometimes the outside temperatures also play a role and especially in summer months, when you add the warm temperatures to the heat that grow lights are generating, you will notice that grow rooms tend to heat up a lot! Hence, using a portable air conditioner is quite an important aspect for growers, especially those who live in warmer places.

The Need for Air Conditioners in a Grow Room

There is a strong need for portable air conditioners in a grow room because they help ensure the plants do not burn out due to this excess heat. While plants burning out is a major risk, another problem that you might face if you do not cool down your room is that your grow lights might stop working! If grow lights overheat, they might either stop working or sometimes even cause a fire hazard so it is essential for growers to make sure that their grow lights are being cooled properly as well. In the next section we shall be taking a look at some of the best portable air conditioners for grow rooms which will help you tackle all these problems with ease. 

Recommended:  Best Big Grow Tents For Growing Marijuana Indoors

Best Portable Air Conditioners for Grow Rooms (2020)

1. BLACK+DECKER BPACK08WT Portable Air Conditioner

Manufactured by BLACK + DECKER, this portable AC is quite a power-packed option for growers looking forward to buying the best portable air conditioners for grow rooms. What really makes this an ideal choice is the fact that not only can it keep your grow rooms and grow tents cool, but it can also have quite an impact on keeping your bedroom, kitchen, or practically any other room of your home cool as well. This is an air conditioner which is effective for rooms about 100-150 sq. ft. in size and is indeed a good option for growers.

The portable air conditioner features 4 wheels on the bottom, which makes it easy for growers to move around. The vertical motion of this air conditioner provides a good air flow which can easily cover the entire room. There’s an LED display on this air conditioner which makes it easy for the growers to see all the information in one place and you can also program this AC to switch on and off over a 24-hour cycle, which is quite an advantage as growers can actually set it up to operate during hours of peak heat. 

It offers three modes of operation: cooling, fan as well as dehumidification, all three of which are great for growers. The cooling mode is the regular air conditioning mode, the fan mode is one which helps promote air circulation and provides proper ventilation while the third is the dehumidification mode, which is great for growers who are looking forward to use humidity as a tactic to improve the growth and yield of their marijuana plants. This also features a bucket-less design which is quite unique by itself. 

It can be operated by a remote and is a good solution for those looking forward to cool down the temperatures of their grow room. You don’t need to worry about any potential heat-related damage to your marijuana plants if you choose to use this air conditioner from BLACK + DECKER. It also comes with a vinyl duct. The operation of this AC is also noise-free as it functions at about 75dB when set on ‘high’. All in all, a good option for growers!


  • Great for small sized grow rooms with multiple grow tents
  • Provides a good cooling solution and is quite easy to operate
  • Comes with a timer which ensures hours of peak heat can be countered
  • Three modes: Air Conditioning, Fan and Dehumidifier


  • A little too loud for the preference of some growers

Check Price & Reviews on Amazon

2. Honeywell MN10CESBB Portable Air Conditioner

Honeywell MN10CESBB 10000 BTU Portable Conditioner, Dehumidifier & Fan for Rooms Up To 350-450 Sq. Ft. with Thermal Overload Protection, Washable Air Filter & Remote Control, Black
  • [POWERFUL, SAFE & DEPENDABLE] Cools rooms up to 350-450 sq. ft. Thermal Overload protection for added safety & peace of mind.
  • [EASY INSTALL & MAINTENANCE] Washable Filter designed to protect from dust & hair to extend product life & performance. Filter cleans easily under a faucet for...

Honeywell is one of the oldest and the most trusted names when it comes to the world of electronic appliances (spoiler alert: this isn’t the last time you’re seeing this brand here). This is among the best portable air conditioners for grow rooms that you can buy off the web and actually offers the growers with a robust solution towards ensuring that the temperatures remain low. The air flow here is quite powerful and the AC can cover medium-sized rooms (upto about 450sq.ft.). For those growers who might have a slightly larger need, there’s another variant available which adds another 100 sq.ft, taking the total coverage up to 550 sq. ft.

One great feature of this air conditioner from Honeywell is that it has been engineered in such a way that it ensures that there is no thermal overload and that you are absolutely safe while using it. The filters in this air conditioner are washable, which ensures you don’t need to replace them as frequently as you might do with other Air Conditioners. Setting up this AC is also quite easy and doesn’t require any technical know-how. There are wheels below it which make it easy for the growers to move it around.

Similar to the BLACK + DECKER Air Conditioner above this, this AC too is a good option for those growers who are looking for a multi-purpose device as it allows them to use it as a regular AC, as well as on fan-only mode which will help blow air and ensure good circulation in the room (particularly useful during the dry months) and also triples-up as a dehumidifier. We find this to be one of the best air conditioners for grow rooms as it comes with a remote that allows the growers to adjust the fan speed, as well as set a timer on the AC!

It operates at a decibel level of 54 dB which is great for growers who do not want a noisy appliance buzzing around in the background. Honeywell’s products are also known for their limited electricity consumption when compared to other devices by other brands so that’s another major benefit here. The control panel on this AC is feather-touch and easy to operate. Do check it out if you’re looking to cool down your grow rooms! 


  • A well trusted brand in Honeywell
  • Noise-free operation
  • Acts as a humidifier as well
  • Easy to operate and lasts long


  • Some users have had problems with their warranty not being honored

Check Price & Reviews on Amazon

3. LG LP0817WSR 115V Portable Air Conditioner

LG is another company which has years and years of experience behind it when it comes to making household electric appliances and air conditioners tend to be one of their best offerings. Worldwide, LG’s air conditioners have been appreciated by people for daily use, as well as for niche uses such as cooling a grow room. Those looking for the best portable air conditioners for grow rooms must consider LG’s LP0817WSR, which is quite a good option to cool down the heat inside a grow room. 

One of the first thing that strikes you about this portable AC from LG is the sleek design. It just looks so premium that you’d fall for it in the first sight! It operates with LG’s ‘heat pump technology’ which ensures a smoother functioning. The AC operates at 14,000 BTUs (the highest on this list) and can easily cover a room upto 400 sq.ft. which is good enough for most medium-sized grow rooms. Another great feature about this air conditioner from LG is that you can actually control it using your phone! You can connect this AC to a WiFi network and use the smarThinQ app on your phone to control it. This is truly what makes it one of the best portable air conditioners for grow rooms.

The air dispenser on the top is inclined and ensures that the air that it releases comes out pretty well and covers the room properly. Using this AC will ensure that your plants never face the risk of a heat damage and are getting both, warmer temperatures when it is off and cooler temperatures when this is turned on. This air conditioner also supports setting up of a timer so that you do not have to worry about constantly remembering if it is the time to turn the AC on for your plants.

It comes with wheels on the bottom for better mobility and can be controlled using a remote as well. There are multiple modes of operation and the AC comes in black and gray variants. Both of these look pretty premium. Using this air conditioner is also pretty easy and anyone can figure out how to control and operate it in a matter of minutes. One problem that some users have reported with regards to this air conditioner is that it is a little loud in operation when you compare it with other ACs. 


  • Sleek design
  • LG is a highly reputed brand
  • Good for medium to large grow rooms
  • Can be controlled over WiFi


  • Expensive
  • Some users find it a little too loud for their preference

Check Price & Reviews on Amazon

4. Honeywell 12000 Btu Portable Air Conditioner HL12CESWK

Honeywell 12000 Btu Portable Air Conditioner, Dehumidifier & Fan for Rooms Up to 450-500 Sq. Ft with Remote Control, HL12CESWK
  • Stylish, powerful & dependable. Thermal overload protection for added safety & peace of mind. Automatic vertical wind motion helps distribute powerful cool air...
  • Dual filters designed to protect from dust & hair to extend product life & performance. Filters clean easily under a faucet for easy maintenance. Full set...

Here’s the second Honeywell air conditioner that we were hinting about! Given that Honeywell is one of the most trusted and most reliable names in the markets when it comes to electronic household appliances, we thought we’d drop in a second Honeywell air conditioner here so that users can choose whichever they find is the best for their needs. This AC from Honeywell offers a coverage of upto 500 sq.ft. and is ideal for growers who are growing their marijuana in a medium to large sized room. The exact model number for this portable AC from Honeywell is HL12CESWK and it operates at 12,000 BTUs.

The design of this air conditioner is very impressive. Growers have found it to be quite good-looking as well as a high-functioning product. The design of the device makes sure that while you can use it in your grow room, you can also use it in your living room as it just fits in so well! Similar to the previous Honeywell AC, this one also comes with thermal protection which makes sure that there is no fire-related danger associated to the product and that it does not get damaged due to overheating. The air that this air conditioner dispenses is quite powerful and is evenly distributed all over the room. 

This is one of the best portable air conditioners for grow rooms as it features two layers of filters which can easily be removed and cleaned. There are three fan speeds in this AC, which can be operated using the digital controls on its body, as well as using the remote control. There’s a sleep mode as well, which makes sure that the AC will be turned off after a few hours. An ‘energy saving’ timer is also a part of the system which is great for growers. 

There is also a built-in dehumidifier with this air conditioner from Honeywell, which is an added benefit to the growers. The dehumidifier can soak in about 86 pints of water in a 24-hour period which is perfect for growers, especially during the flowering stage of their marijuana plant. Another great thing here is that when you buy this Air Conditioner, you get a $50 discount using the special coupon that Amazon is providing the buyers with! There are wheels on the bottom for easy movement while it can also be installed on to a window as well.


  • Sleek and premium design
  • Powerful cooling
  • Honeywell as a brand is quite a performer
  • Also functions as a dehumidifier
  • Good for large to medium sized rooms


  • Some users find it a little too noisy for their preference

Check Price & Reviews on Amazon

Recommended: Grow Tent vs Grow Room: Which to Choose?

Buying Guide: Factors to Keep in Mind While Buying Portable Air Conditioners for Grow Rooms

When buying a portable AC you need to keep the following things in mind:

  • Size of the Room: One of the first things that you need to keep in mind is the size of your grow room. You need to know exactly how big is your grow room based on which you should look for the best portable air conditioners for grow rooms that will meet your requirements. Ensure that you are not buying a big air conditioner for a small room and a small one for a big room!
  • Brand: The brand matters too! Getting a good brand will give you a peace of mind that they are trusted products and that the company will honour the warranty period and in case of any damage getting them repaired is easier. Furthermore, trusted brands also fetch a good re-sale value in case you decide to sell it off later.
  • Design/Durability: The AC that you are buying needs to be a good-looking device, this is because then you can actually use it in  your living room as well as your grow room. Make sure it is durable and does not break off easily. Apart from the durability, another important aspect of the design is – you need to check how this air conditioner can be installed: can you place it in your window, or do you only have the option of keeping it on the ground. Also check if there are wheels (most portable air conditioners have wheels).
  • Timer/Dehumidifier: Do look for other features such as a timer and a dehumidifier as well. Both of these are pretty important for growers.

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We hope that this article on choosing the best portable air conditioners for grow rooms helped you make a well-informed choice and made you aware about everything that you need to consider before you buy an AC for your grow room. Using the right air conditioner will help the growers with ensuring that their plants offer better and higher yields. 

Happy Growing! 🙂


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