Best Heaters for 4×4 Grow Tent in 2023 – Top 4 Picks

Portable grow tents are getting very much popular these days. And whenever you want to make a good harvest in your grow rooms, it’s always crucial to ensure proper heating. Moreover, the heater will vary depending on the size of your tent (4×4, 6×6, 8×8, etc.).

To choose the best heaters for 4×4 grow tent, features like energy usage and heat output are really important. Moreover, you also need to look at the usability and mobility of the heater. There are many sizes of grow tents and it’s also necessary to keep the size in mind.

In this article, I will discuss four of the best grow tent heaters. If you are considering buying one, I will also provide a guideline.

4 Best Heaters for 4×4 Grow Tent

Let’s look at the 4 best grow tent heaters for a 4×4 grow tent you can purchase today.

1. Honeywell HHF370B 360 Degree Surround Fan Forced Heater

Honeywell HHF370B 360 Degree Surround Fan Forced Heater-min


  • Material: Teflon-like on heating part
  • Power Source: Corded Electric
  • Heating Method: Radiant, Fan & Forced Air
  • Wattage: 1800 Watts 360 Degree Output
  • Special Feature: Digital Temperature Display
  • Ideal For: Small To Mid-Sized Tent
  • Dimensions: 8 x 8 x 11.5 inches
  • Weight: 3 lbs

Honeywell has been making it big when it comes to grow-tent heaters. And Honeywell HHF370B 360o fan forced heater is certainly another great one, especially for small to mid-sized grow rooms.

In addition to overheating protection, this portable heater features a sturdy base and 360° safety tip, which prevents the heater from tipping over.

This is a grow tent heater with a thermostat that is programmable. Thus, this makes control very easy. Moreover, you can easily save money by lessening the thermostat of the whole grow tent.

Likewise, this is a manual heater that weighs 3 pounds, has dimensions of 8 x 8 x 11.5 inches, and has 1800 watts output. You can use radiant, fan & forced air heating.

When the unit is set to low, a Killa-Watt meter measures 696 watts, and when set to high, it measures 1350 watts. This heater heats up the grow rooms really fast.

Besides, the noise of this unit is not that low although it’s manageable. This small heater has a reasonable price compared to the competitors.


  • Quick Heating Capacity
  • 3-Year Limited Warranty
  • Compact Design
  • Auto Off Timer
  • Safe For Kids To Touch


  • A little bit noisy
  • Made In China

2. AC Infinity CLOUDLINE T4

AC Infinity CLOUDLINE T4, Quiet 4 Inline Duct Fan with Temperature Humidity Controller-min


  • Wattage: 12 volts supply, 21 watts power usage
  • Noise: 28db noise
  • Control: Intelligent programming
  • Power Source: Corded Electric
  • Special Features: Ventilation feature and water resistance
  • Dimensions: 6.9 x 7.4 x 11.9 inches
  • Weight: 0.01 Ounces
  • Shipping Weight: 6.451 pounds

You can easily both cool and heat hydroponic systems in grow rooms with CLOUDLINE’s inline duct fan. It is designed for quick heating without making much noise. Moreover, you can also cool down your grow room with this inline fan due to its ventilation adjustability.

Accordingly, with this unit integrated into your tent’s ventilation system, your grow room could be heated and cooled quietly and effectively.  When turned on level 3, this machine can clear the air in your grow tent within four seconds!

205 CFM is its peak airflow rate. This comes at the noise of 28dB only. Moreover, if you can supply only 12 volts, that will be enough for this ducted fan. It will also make power usage of 21 watts.

The dimensions of this heater are 6.9 x 7.4 x 11.9 inches and the item weight is 0.01 ounces. The shipping weight is 6.451 pounds. Thus, the operating temperature of this fan can vary from 14oF to 230oF, allowing you a wide range of heating and cooling.

However, its intelligent programming feature allows you to easily tweak the temperature.

This duct fan is reportedly able to serve for sixty-seven thousand hours, which is massive. The installation is also very simple and usability is excellent.


  • Excellent usability
  • Remote control from a phone
  • Massive 67,000 hours lifetime
  • Accurate and fast sensors


  • Expensive

3. Honeywell HeatBud Ceramic Space Heater

Honeywell HeatBud Ceramic Space Heater-min


  • Control: One-button control
  • Dimensions: 5 x 4 x 7.75 inches
  • Wattage: 250-watt output
  • Special Feature: The outside features a cool touch
  • Safety Feature: Auto Shut Off In 2x Overheat
  • Power Source: Corded Electric
  • Heating Method: Convection
  • Weight: 1.05 pounds

This ceramic space heater is specially made for small spaces. Hence, it’s perfect for your grow rooms or tents. Moreover, its small dimensions which are 5 x 4 x 7.75 inches make it even more suitable.

So, this compact-designed grow tent heater with digital thermostat brings two low-wattage heat settings. It’s easy to control with only one button. Moreover, this usability comes with a fast output of 250 watts.

Besides, this tiny space heater comes with multi-layered safety options including overheat protection, tip-over protection, and a cool touch handle.

The weight is only 1.05 pounds and the heating method is convection. Moreover, the operation is noise-free, so you won’t have to worry about any irritating noise.

This doesn’t use convenient temperature control like other options but it’s not that inconvenient. One thing you should be careful about is angling this heater as the safety feature can turn it off.

Its wattage range is 170 to 250 watts. This is amazing if you consider the amount of heat it generates within this wattage range.


  • Easily fits the desk or even the palm of a small hand
  • Hand-washable material
  • Multiple safety features


  • Relatively slow heating
  • Low-Quality Wiring

4. Lasko MyHeat Personal Mini Space Heater for Home

Lasko MyHeat Personal Mini Space Heater for Home-min


  • Dimensions: 3.8 x 4.3 x 6.1 inches
  • Special Feature: Plug-and-play feature
  • Heating Method: Convection
  • Power Source: Corded Electric
  • Wattage: 200 watts Energy Efficient
  • Cord Length: 6 Feet Long Power Cord
  • Weight: 1 pound
  • Burner Material: Ceramic

This heater is made especially for heating small spaces. Hence, using it for your grow tent or grow space is ideal. Its max output is 1500 watts. And guess what? This only requires 200 watts to generate! So you won’t have to worry about extra energy consumption.

This is arguably one of the best heater for small grow tents. Thus, this space heater with a corded electric power source uses convection heating. The heater uses an electric fan to circulate the warm air in conjunction with a ceramic heating element.

And the dimension is 3.8 x 4.3 x 6.1 inches and the weight is only 1 pound. Users have mixed reviews regarding the noise it makes. However, as you will be using it for your grow tents, it won’t bother you that much.

On the other hand, the price is very affordable if you consider the number of years you will get from this heater. 


  • Safety features to prevent any accident
  • High-quality materials are used
  • 1500-watt output with only 200-watt input
  • Life expectancy is 3 years at least
  • 3 years warranty


  • Temperature control isn’t up to the mark
  • The tip-over mechanism is absent

Buying Guide for the Best Heater For 4×4 Grow Tent

Choosing the right 4×4 heater for your grow space can be a pain if you don’t know exactly what you’re expecting out of it. To make things easy, I am going to discuss all the features you should pay heed to before making any potential purchase.


It’s a common formula of electricity that the more the input, the more the output. This also applies to heaters. However, modern technology is proving this theory wrong to a great extent.

Nowadays you can easily find grow tent heaters that work at a wattage range of 100-200 watts. But they produce whooping watts of heat. So, be sure to look at the energy efficiency of the heater before buying one. Otherwise, it can be more than handy to skyrocket your electricity bills.


The tent heater should be easy to install and control. Especially, the temperature control of the heater should be within your grasp. Otherwise, you’ll have to use it based on your assumptions which is a pain.

In that sense, modern grow tent heaters offer easy temperature control. Moreover, you could also find temperature screening in some of them. And the plug-and-play feature is also very much gettable these days. So be sure to buy a heater that comes with these facilities to avoid the hassle.

Heating Features

There are many heating features that come with grow tent heaters such as convection, fan-forced, static, etc. Keep in mind the size of your grow tent for this. If you have a big tent, you will need fan-forced 360o coverage. The small one might do with static heating.

Grow Tent Size

If you have a big grow tent, you will need a big and more powerful heater to heat every corner of the tent. However, if you have a small tent, you can choose a small one with less wattage. Also, look at the mobility of the heater.

Temperature Principles

The thermostat feature is commonly found in 4×4 grow tent heaters. Such technology or other thermal regulations are a must to prevent any power loss. So check for these features.

Moreover, your heater should be able to detect overheating and automatically cut the operation. This is important for overall safety.

Variations of Heaters

Ceramic heaters are really popular these days as they provide higher heat compared to oil heaters. So be sure to know which type of heater you’re purchasing to meet your needs.

Final Words

Choosing a heater for your grow tent highly depends on your priorities. If you want to go for a trusted brand, going for Honeywell is always a good choice.

However, if you want long-time service, then CLOUDLINE or Lasko can be a good option for you. No matter which one you choose, be sure to look if the features meet your needs.

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