10+ Best Temperature and Humidity Controllers Reviews in 2023

Hey buddies, today I have brought the Best Temperature and Humidity Controllers Reviews for you. We are going to discuss a very important topic there. My expert team was into in-depth testing of various temperature and humidity controllers in the market and has selected the top ten for you.

Not just that, I am here to provide my readers with some necessary side info that is going to help you cultivate great yields.

As you might know, plants need a suitable environment to thrive the best, very similar to humans and animals. I am here to explain the factors to look upon before buying a temperature and humidity controller and how it works.

You will come to know everything about controlling the temperature and humidity of the grow tent or grow room. Read my review, and you will advance some steps towards being a pro!

Here we go!

Temperature and Humidity Controllers


Name Why should you buyCheck Price
Bjerg Instruments Thermometer and Hygrometer table.jpg

Bjerg Instruments Thermometer and Hygrometer
Instrument choice Check Price
Frigidaire FAD504DWD Energy Star 50-pint Dehumidifier table.jpg
Frigidaire FAD504DWD Energy Star 50-pint Dehumidifier
Amazon's choice Check Price
Honeywell HT-900 TurboForce Air Circulator Fan Black table.jpg

Honeywell HT-900 TurboForce Air Circulator Fan Black
Fan choice Check Price
Apollo Horticulture 20 x20.75 inches Seedling Heating Mat table.jpg
Apollo Horticulture 20 x20.75 inches Seedling Heating Mat table
Heating mat choice Check Price
Holmes Heater HFH421 - NU table.jpg
Holmes Heater HFH421 - NU
Best heater choice Check Price
Frigigidaire FFRE0533Q1 Air Conditioner table.jpg

Frigigidaire FFRE0533Q1 Air Conditioner
A.C. choice Check Price
Ink Bird IHC 200 Humidity controller table.jpg
Ink Bird IHC 200 Humidity controller
Best humidity controller choice Check Price
Intermatic DT122K Digital Indoor Timer table.jpg
Intermatic DT122K Digital Indoor Timer
Best compact choice Check Price
Titan Controls Saturn 4 & 5 table.jpg
Titan Controls Saturn 4 & 5
Best environment controller Check Price
Autopilot master digital timer table.jpg
Autopilot master digital timer
The best all-round controller Check Price

Here we start explaining the best temperature and humidity control devices out there, which are easy to use and best for your money. These all went through vast testing procedures before my experts picked them up to nominate in this review. Have a look at our top 10!

1) Bjerg Instruments Thermometer and Hygrometer – Instrument choice

Bjerg Instruments Thermometer and Hygrometer
Bjerg Instruments Thermometer and Hygrometer

This one is an antique-looking stylish temperature and humidity controller, which tests humidity and temperature, respectively, and as you can see in the pick, nothing digital here. The diameter of this instrument is 8 inches. The dial is of 5.5 inches. The wieght is 2.4 ounces. You can check the readings in Celcius and in Fahrenheit also.

One can use it indoors, outdoors, anywhere! You might be thinking that the outer part is plastic, but you are wrong! It is all copper and glass. This device is highly durable mostly due to the strong steel, which is used in constructing the inner frame.

  • Usable indoors and outdoors also.
  • Lightweight.
  • Highly durable.
  • Top quality steel and copper used in making.
  • Attractive antique looks.
  • No mentioning of warranty period by the company.
  • Not digital.

Bjerg Instruments Thermometer and Hygrometer: The verdict

This classy-looking temperature and humidity controller is high in demand. High durability and perfection are the key factors with this one. Although it looks antique, but it is not costly at all. If you need an attractive and highly functional device for monitoring, Bjerg Instruments Thermometer and Hygrometer is a decent choice for you.

2) Frigidaire FAD504DWD Energy Star 50-pint Dehumidifier – Amazon’s choice

Frigidaire FAD504DWD Energy Star 50-pint Dehumidifier
Frigidaire FAD504DWD Energy Star 50-pint Dehumidifier

Guys, 12,116 customers have written a review about Frigidaire FAD504DWD Energy Star 50-Pint Dehumidifier on Amazon, and it has achieved 4+ stars out of 5. If you are suffering from high humidity problem, this is a decent pick for you. It is a true moisture killer.

Besides that, it also kills the bacteria in the air and makes it easy to breathe. The smell will be gone! You have to set your desired temperature, and this machine will fulfill your requirement. You do not need to empty the tank of this machine. There is already a drain pipe, and through that, it is going to drain the water continuously.

Now, if you are not willing to drain that water in that specific place, then also you have the option. You can utilize its tank. When you come to know that it is full, it is going to auto-shutoff till you empty that tank. There are level indicators, washable filter and electronic controls in this machine.

You get a power cord with it, which is of six feet. You do not need to worry about the heavyweight while moving it. The company provides wheels underside for rolling it.

For parts and labor, you get one year warranty. The sealed system warranty period is five years.


Product dimensions. 19.8 x 11.54 x 14.57 inches
Item weight 37 pounds
Reservoir capacity 116.3 pints
Power consumption 420W
Warranty period 5 Years
  • Energy saver.
  • Capable of removing 50 pint of water per day.
  • Operates continuously.
  • Best selling dehumidifier on Amazon.
  • Eliminates bacteria from the air.
  • Highly capable and easy to operate.
  • 1 years warranty for parts and labor.
  • 5 years warranty for sealed system.
  • A Cord extension is not usable with this machine.

Frigidaire FAD504DWD Energy Star 50-pint Dehumidifier : The verdict

Now when we say that over 12,000 people have bought this machine, then surely it would have been awesome, and it really is. You get a highly powerful dehumidifier at a very comfortable price. The way it deals with the bacteria in the air is fabulous, and most importantly, it is a continuously working machine.

I recommend Frigidaire FAD504DWD Energy Star 50-Pint Dehumidifier to you as I am sure it is going to solve many of your problems!

3) Honeywell HT-900 TurboForce Air Circulator Fan Black – Fan choice

Honeywell HT-900 TurboForce Air Circulator Fan Black
Honeywell HT-900 TurboForce Air Circulator Fan Black

This fan is highly capable of maintaining the right environment and especially temperature around your weed plants. Honeywell HT-900 TurboForce Air Circulator Fan Black is the best selling on Amazon. 11,511 reviews on Amazon, where you can see 4+ stars average.

This fan is a master of ventilation. Hence it is highly praised by a huge army of indoor growers. Although the price is low, still compromising with the quality has not taken place. This fan is designed as an aerodynamic turbo force. One can hang it anywhere, on the place it on the table, chair, etc.

9 inches is the size of the blades while the outer casing is 11 inches. 1 The pound is its weight. Overall dimensions are 11.02 x 6.46 x 11.22 inches. Most importantly, this fan works very quietly. It produces quite less amount of noise than most of the fans out there. You can set the speed at either of three points as per desire. The warranty that you are getting here is 12 months.

  • Highest selling on Amazon.
  • Compact and Lightweight.
  • Three speed settings.
  • No high noise issue.
  • 12 Months warranty.
  • A few users aren’t satisfied with the customer service.

Honeywell HT-900 TurboForce Air Circulator Fan Black : The verdict

If you are trying to find out a compact, but a highly powerful fan for your cannabis plants, and it must be the one, which doesn’t make much noise, then buy Honeywell HT-900 TurboForce Air Circulator Fan Black as it is no less than an expert in its work.

4) Apollo Horticulture 20″x20.75″ Seedling Heating Mat for Propagation and Cloning – Heating mat choice

Apollo Horticulture 20 x 20.75 Seedling Heating Mat for Propagation and Cloning
Apollo Horticulture 20 x 20.75 Seedling Heating Mat for Propagation and Cloning

This heating mat is a perfect creation of Apollo Horticulture. This company is highly known for manufacturing top quality cannabis growing related products. Hence, they receive a lot of love from cannabis growers across so many nations.

It earned 4+ on Amazon and 540 users have reviewed it. In measurement, it is 9 x 20 inches while it weighs not a gram more than 12.3 ounces.  The power cord that company is providing is six feet long.

The main job of this heating mat is to provide heat to the cannabis plants which are growing in colder places. It is capable of pushing up the temperature of the plant root area roughly 10-20 Degrees F in contrast to room temperature. Safety is always assured with the Apollo Horticulture products.

The network of internal wiring holds this mat together. Nothing is going to happen even if this mat comes in contact of water because the makers have made it waterproof.

Using this mat, you can definitely bring betterment to the  health of seeds and roots. Later on, you can get good yields.

  • Highly trusted brand.
  • Easily affordable.
  • Highly durable.
  • lightweight.
  • Waterproof.
  • Brings betterment to root health.
  • Boosts up germination rate.
  • Cannot do air warming and suitable only for roots and lower portions of plants.
  • The company has not provided any warranty period.

Apollo Horticulture 20″x20.75″ Seedling Heating Mat for Propagation and Cloning: The verdict

No other heat mat can beat it in terms of increasing the root health. This mat is cent percent perfect for warming up the plants, and if you are living at a colder place, then you surely need to buy Apollo Horticulture 20″x20.75″ Seedling Heating Mat if you really are hoping for decent yield in future.

5) Holmes Heater HFH421 – NU- Best heater choice

Holmes Heater HFH421 - NU
Holmes Heater HFH421 – NU

Now, the main purpose of Holmes Heater HFH421-NU is to keep the surrounding of your cannabis plants warm. If you are the one living at a cold place, then this machine can highly help you out.

You can place it as per your convenience, for example, table, chair, or hanging it on the wall. There are digital controls present with the help of which you can set the temperature as per your requirement. This model is ALCI safe, so you do not need to bother about anything even if you are placing it inside your grow tent.

1500W is the output of one heat setting. The company has built it to produce minimum noise so that nobody feels troubled. 60Db is the top noise level. Suppose you do not want it for cannabis and want to utilize it for some other purpose, then you can set it at pre-heat heater mode.

It is a lightweight machine and weighs only 3.4 pounds. The dimensions are 10.3 x 12.8 x 8.2 inches. You enjoy a 12-month warranty with this heater.

  • Digital thermostat.
  • You can mount it on wall.
  • Quick heating.
  • ALCI safe.
  • Low noise levels. Companies provides a clock and a timer alongwith.
  • 12 Months warrnty.
  • Just one heat setting.

Holmes Heater HFH421 : The verdict

However you are not having the heat level options here, but this heater perform much better than most of the other heater of its price range. You can use this heater in grow tents of various sizes. You get 12 months warranty time as well. I highly recommend Holmes Heater HFH421.

6) Frigigidaire FFRE0533Q1 Air Conditioner – A.C. choice

Frigigidaire FFRE0533Q1 Air Conditioner
Frigigidaire FFRE0533Q1 Air Conditioner

Earlier we talked about dealing with cold, and now we are talking about dealing with hot conditions. Now, if the temperature is high outside, then no matter how well you gave packed your grow tent, but that heat is surely going to affect your cannabis plants for sure.

So, for dealing with such a situation, you need a perfect AC, right? Frigigidaire FFRE0533Q1 Air Conditioner is the perfect device you can use in such circumstances. Measuring 15.2 x 16 x 12 inches, it weighs 42 pounds.

You cannot use the other air conditioners which normally you use for your rooms because they are more powerful than what actually you need in your grow tent. If the grow room or grow tent area is something like 140-160 square feet, then this AC is going to serve you the best.

It is capable of removing 11 pints water in an hour. For setting options, you get ready to select electronic control with this one. You need a 115V electrical outlet to use this AC.

Now, when it comes to AC, you surely start bothering about electricity bills. Let me decreases your tension by saying that this model saves a lot of energy. 1 Years of labor and parts warranty and 5 years sealed system warranty is what you get with Frigigidaire FFRE0533Q1 Air Conditioner.


Product dimensions 15.2 x 16 x 12 inches
Item weight 42 pounds
Input voltage 115V
Reservoir capacity 11 pints water/hour
  • Highly durable.
  • UL/CUL Certifications of safety.
  • Dehumidifier is included.
  • Remote control provided.
  • 5 Years limited warranty.
  • Not that suitable for grow rooms measuring over 180 square feet.

Frigigidaire FFRE0533Q1 Air Conditioner : The verdict

This one is the best AC for the cannabis plants. It is capable of removing humidity in very less time. Not just that, it kills the bacteria in the air as well. The warranty period you get here is decent, and the warranty service is also brilliant. All these factors make Frigigidaire FFRE0533Q1 Air Conditioner worth purchase.

7) Ink Bird IHC 200 Humidity controller – Best humidity controller choice

Ink Bird IHC 200 Humidity controller
Ink Bird IHC 200 Humidity controller

This humidity controller from Ink Bird has cleanly beaten up the competitors. You just need to input the settings, and it will control the humidity accordingly. It is built with smart technology, so it switches itself to humidification and dehumidification mode itself. All you need to do is just enter the value, and rest you keep upon Ink Bird IHC 200 Humidity controller.

The alarm system is also there. It starts buzzing when the humidity goes up or down in contrast to what digits you have entered. Now, if the humidity crosses the limit, you are going to get an alarm alert. Calibration of humidity values is also possible. For controlling output, you can set it to delay protection. The Inkbird controller is provided for that purpose only. The input voltage is AC100-265 Volts.

A guiding manual is there as well. The warranty period is of 12 months.

  • Sensor read error and pass an alert.
  • Capable of controlling all of humidifiers, dehumidifiers as well as ventilation fans.
  • Guiding manual comes along with.
  • Automatic mode selection.
  • Easy to operate.
  • 12 Months warranty time.
  • Functions only till 10A is the max electrical load.

Ink Bird IHC 200 Humidity controller : The verdict

For those, who prefer using modern day automatic humidity controllers, this one is a cool choice. The Amazon ratings are also a high and large number of users are joyous with the experience of using Ink Bird IHC 200 Humidity controller. I highly recommend it to you.

8) Intermatic DT122K Digital Indoor Timer – Best compact choice

Intermatic DT122K Digital Indoor Timer
Intermatic DT122K Digital Indoor Timer

This is the best lightweight Temperature and Humidity Controller device in our list. This one is compact yet heavy-duty device which has 7 On/Off programmable settings for you. You can set it to “per day” also and “per week” also. For setting the time, you can also use the manual timer. Being just 2.4 ounces, it measures 6.8 x 5 x 2.5 inches.

It comes with a fascinating astronomic feature with the help of which it adjusts itself to sunrise and sunset. Besides that, you will not have to reset the settings twice a year because daylight saving setting is there. It is a plug and plays thing. Carrying it is quite easy.

It is capable of controlling CFL and LED lights beside the marijuana instruments. It is UL certified for safety. It operates on any wall outlet that has 15amp with 1254VAC. You also get a rechargeable battery. The warranty period is twelve months.

  • Total 7 On/Off programmable settings.
  • Plug and play instrument.
  • Low cost.
  • Automatic daylight saving settings.
  • Astronomic feature is present.
  • Long lasting.
  • Rechargeable battery included.
  • 12 Months warranty period.
  • Unable of controlling multiple devices at the same time.
  • Not waterproof and for indoor use only.

Intermatic DT122K Digital Indoor Timer : The verdict

One can conveniently control heaters, coolers, Acs, and humidifiers with this small yet smart device. Even after providing such fascinating technology, the company is not asking high price form you. One year warranty is there. Intermatic DT122K Digital Indoor Timer is entirely worth purchase.

9) Titan Controls Saturn 4 & 5 – Best environment controller

Titan Controls Saturn 4 & 5
Titan Controls Saturn 4 & 5

Both of these devices are experts in controlling various devices. These are capable of controlling heat, cold, humidity, etc. and as a result, I along with my expert team selected this one as the best environment controller. These are having remote sensors for monitoring the humidity and temperature readings. The range is 15 feet.

These devices maintain the right values which you have entered for humidity and temperature very well whole day and the whole night. Saturn 5 has an environment control, which is digital-based and it features a smart short cycle timer of enhancement of carbon dioxide. Here I have provided the specs so that you know Titan Controls Saturn 4 & 5 in a better way.


Product dimensions 12.2 x 8.8 x 6.4 inches
Item weight 4.6 pounds
Input voltage 120V 15A 60Hz
Warranty period 3 years
  • Fully customizable.
  • Easily portable.
  • Capable of controlling multiple cannabis devices and equipment.
  • Data logging capacity.
  • Perfectly built for high durability.
  • 3 Years limited warranty.
  • Less review on Amazon.

Titan Controls Saturn 4 & 5 : The verdict

Both these model are equally capable and provide you with almost equal luxuries. All of your cannabis supporting devices are going to be conveniently controlled. Although it is a new brand, but Titan Controls Saturn 4 & 5 impressed us in testing, and I recommend you to buy it.

10) Autopilot master digital timer – The best all-round controller

Autopilot master digital timer
Autopilot master digital timer

Now, this is a special device, that is capable of controlling all the devices that you have and that too all together. By devices, I mean heaters, coolers, ACs, dehumidifiers, etc. A highly precise digital time clock is there in this autopilot digital timer. The in-built battery back up is also there.

It features dual timer functions, and with that, 24 hours time clock as well. The On/Off timings of the lighting systems can be controlled. You can also control cycle times for pumps. Now, besides that, it impresses you even more as the Carbon dioxide injection, intake, and exhaust time can also be controlled.

Four outlets

There are four outlets in this device, and reading about them is necessary for you.

  •  The first control is for controlling pumps and other recycling devices.
  •  The daytime devices such as light movers and lightnings are controlled by the second and third outlet.
  • The nighttime devices such as coolers, humidifiers, and dehumidifiers come in under the control of the fourth outlet.
  • The first feature is known as high-temperature shutdown. The digital timer is going to switch off all the heating sources automatically if the situation arises that the lighting systems and heaters start producing high heat and the ventilation collapses.
  • Hot start function is the other thing that you get. The digital timer is going to wait for the lamps to cool down for avoiding damage whenever you switch on your lighting system.
Product dimensions 9 x 12 x 10 inches
Item weight 4.15 pounds
Outlets 4
Recycling on and off range 1 second to 96 hours
Warranty period 3 Years
  • High temperature auto shutdown feature.
  • capable of controlling multiple cannabis supporting devices at the same time.
  • Hot start prevention.
  • Highly trusted brand.
  • Long lasting and low cost.
  • 3 Years limited warranty.
  • Not capable of holding more load than 14.5A.

Autopilot master digital timer : The Verdict

This digital timer is highly sophisticated and capable of performing so many tasks at the same time. The makers have taken perfection to a higher level while designing this. I recommend you Autopilot master digital timer as it is going to provide you the best control over everything simultaneously!

Best Temperature and Humidity Controllers Reviews : The essentials to notice

After knowing about the best 10 temperature and Humidity controllers out there, you need to read further for receiving really valuable knowledge which I have provided here. This portion is necessary, as here you are going to learn why we actually need these controllers, and what are the advantages.

Besides that, what factor are there, which a buyer must concentrate upon before buying these sort of devices, plus what all can you fetch out of it. I will also give you some master tips of controlling the humidity and temperature in the grow tents and rooms.

What Happens When Temperature and Humidity are not Controlled?

A large number of indoor cultivators may have issues using a temperature and humidity controller, feeling that they are just an abuse of money.

Yet some can be expensive, the truth is, it is an endeavor that you will require. This will grow the chances of accomplishment in growing, giving an attestation that your plant won’t fail horrendously.

Right when the temperature in the create room is exorbitantly high, the tendency is that the air will have the capability to hold more water vapor. It will similarly move speedier, and along these lines, will grow the element of stickiness. The plants can get sticky. On the other side, when the temperature is low, air will have the capability to hold less water vapor. The dampness will moreover be lower.

Other losses

If temperature and humidity are too much, one of the issues that can be evident is ruining. The white shape can similarly make on the leaves, which can impact the idea of the yield.

If there is too little wetness, of course, the improvement will be stale, and the plant will be not capable get the enhancements that are fundamental to its survival. To incorporate, if there is too much dampness in the grow tent, this could shield the plants from taking in carbon dioxide, which is basic for its prosperity. This will shield photosynthesis from happening.

Pretty much, when the temperature or the humidity is above or underneath the right measurements, the plants will persevere. Aggravations and sicknesses can be a noteworthy issue. The yield can be lesser. Most detectably dreadful, plants can fail horrendously.

What about the correct Temperature and Humidity in a Grow Room?

The right temperature in a grow room will similarly depend upon different factors. For instance, this could be affected by its region and the plants that you are creating.

By virtue of cannabis, the temperature should be ideally from 68 to 77 degrees Fahrenheit. Right when the plants are progressively prepared, they can manage a temperature that is up to 82 degrees Fahrenheit. This is the time when the lights are turned on.

Of course, when the lights in a grow room are executed, the ideal temperature should be someplace in the scope of 62 to 72 degrees Fahrenheit. Keep in mind additionally that the temperature in the midst of the day and night should not have unnecessarily of a qualification.

In the meantime, for the right component of humidity, keep an eye out for the period of advancement of the plant. If they are seedlings or clones, the right sogginess should be someplace in the scope of 70 to 75%.

For the vegetative stage, on the other hand, it should be from 50 to 70%. In the midst of the sprouting stage, ensure that the dampness is kept at 40 to half. Finally, when it is about arranged for gather, the humidityshould be some place in the scope of 45 to half.

Tips for choosing  the Best Temperature and Humidity Controller

Now here are the tips that are going to help in choosing the best humidity and temperature controller for you. I do not want you to stay unfamiliar with anything! As you start shopping, see that the things that we are talking about in this review are as they must be.

Comfort: Make without question that it goes with a straightforward structure, which will empower you to set the perfect temperature without the need to apply effort.

Display: An incredible choice would be one that goes with an easy to see the introduction, which ought to exhibit the present temperature/stickiness similarly as the temperature/moisture that you have set.

Sturdiness: See to it that it is made of persisting materials. A champion among the most imperative is to have a separated territory, consistently made of plastic, which will offer security from outside components that could make hurt the inward fragments.

Alert: The controller must make an uproarious sound to rapidly alert you once the temperature/dampness has outperformed or gone underneath the limit that you have set.

Certification and warranty: Most of the products that we have recorded down in this review have an assurance that props up from one to three years. It will be incredible if the thing has a progressively drawn out assurance against disfigurement with the objective that you can be sure about its quality.

Perfectly Managing the right Temperature and Humidity in the Grow Room

Before we end up things, empower me to give to you some imperative insights on the most capable strategy to manage the temperature and stickiness to guarantee that it will overhaul the improvement of plants in an encased circumstance:

Settling and securing the room will end up being fundamental. This will give an affirmation that the temperature inside will be kept up and won’t be impacted by the temperature outside. Warmth won’t have the ability to escape, so as the infection. Something different, there can be instabilities in temperature that will be outside your capacity to control.

Air advancement will in like manner be essential. This is the reason you ought to present fans that will give the indispensable ventilation. Surely, even floor fans will help. You ought to acknowledge when to turn on the fans and when to turn them off. Concentrate additionally to faltering, guaranteeing that the air moves.

Be careful

Be careful about the use of grow lights. While they are in all actuality imperative for photosynthetic activity because of plants that don’t get sunlight, they could similarly mean the glow.

This can cause a climb in temperature that can impact the quality of the plants. Endeavor to pick grow lights that don’t make the grow room hot.

It is moreover recommended that you use a humidifier/dehumidifier in the grow room, dependent upon whether the stickiness is too much high or exorbitantly low.

One of the main keys to the accomplishment of this movement is to gauge it genuinely. Else, it will simply wrap up wasting power without doing anything extraordinary to your plants.

You can similarly use warming and cooling equipment to control the temperature in the grow room. A glow tangle or a radiator fan can be an uncommon choice if you have to extend the temperature. On the other hand, in case you require it to cut down rather, you can use a diminished constrained air framework or a circulator fan.

Best Temperature and Humidity Controllers Reviews : Some final words

Now, whatever I thought was essential for you, I explained. Besides that, those tips are going to highly support you in selecting the right humidity & temperature controller for you. Those ten products which I have suggested here are all dominating their respective field, and none of them are going to let you down!

So, click on the check price buttons, plan up, and start growing! Wishing you get your desired yield!!

Christopher Andrews
I am Christopher Andrew, the owner of 420 Expert Adviser. I have been in cannabis cultivation for more than ten years, and I'm sharing my experience with you guys using this blog!

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