6 Best Greenhouse Heater in 2022 (Tried & Tested)

This winter, if you are looking for a greenhouse heater to keep your plants warm, healthy, and flourishing, then you are in the right place. In winter, garden cultivation and management are significant.

We all know how greenhouse heating plays an important role in horticulture. And with a greenhouse gardening, you can create your microclimate, control the temperature and expose humidity to your plants.

If you want to grow vegetables the whole year, nurture exotic plants, or grow seedlings early in the season, greenhouse heating supplies the adjustable growing environment you need.

Image Product
The Bio Green Palma Greenhouse Heater
  • Quick Heating
  • Sturdy on the ground
  • Robust body
The Dr. Heater DR218-1500W Infrared Heater
  • Save energy efficiently
  • Keeps you warm
  • Safeguard
Amazon Basics Portable Eco-Smart Space Heater
  • Adjust & operate
  • Sensor for protection
  • Temperature settings
The Robust iPower Electric Fan Heater
  • Control & overheat protection
  • Easy to carry
  • Easy to move
LightHouse 305mm 45W Eco Heat Greenhouse Heater
  • Safeguard against fluctuations
  • Power Saver
  • Rigid and tough
AgiiMan Outdoor Patio Heater
  • Outdoor patio heater
  • Upgraded to enormous size
  • Power consumption

Top Greenhouse Heaters

When buying a greenhouse heater, it is crucial to keep all the factors in check, including cost, efficiency, and features. 

Let’s review the top greenhouse heaters in the market and about their features, pros, and cons so you can make the best decision for your greenhouse.

1. The Bio Green Palma Greenhouse Heater

BrandBio Green
MaterialStainless Steel
Item Weight10.8 Pounds

The robust housing is constructed mainly from steel. It looks good in any situation with its timeless design. The ideal solution for more miniature greenhouses. Thanks to its compact design.

Engineered in Germany and built with a remarkable design for different environmental conditions. This greenhouse is surprisingly sturdy and doesn’t make any noise. Operating temperature controls are comfortable and simple.


  • Quick Heating: Easily heats spaces to 120 ft. ² An ideal solution for a greenhouse & more. Keeps the house warm, and your plants are sufficiently healthy and thriving.
  • Sturdy on the ground: A standing greenhouse heater that doesn’t make any noise. It is known for its soundless feature. Even on the ground, it is ultra-quiet and waterproof as well.
  • Robust body: The body is made of stainless steel, and it is engineered in Germany.
  • Exceptional fan: Fan that is durable and is made for bearing environmental conditions.
  • Big on energy saver: Saves energy and is inexpensive for handling operations. A heating solution that doesn’t require a lot of energy consumption.

Pros & Cons of The Bio Green Palma Greenhouse Heater


  • Small, handy design for easy use
  • Sufficiently full for most greenhouses
  • It is durable and a tough build that lasts long
  • Comes with ideal temperature controls


  • Not appropriate for bigger greenhouses.

2. The Dr. Heater DR218-1500W Infrared Heater

BrandDr. Infrared Heater
MaterialGalvanized Steel
Item Weight12.8 pounds
ColorBlack, Green

The DR218 greenhouse heater is a satisfactory preference for fragile plants. Uses an enclosed, thermally protected motor. Durable, efficient, and a reliable heat source for you. A low-maintenance heater. 

The size is very handy and exceedingly comfortable to hold. It warms up the room within a few minutes of turning on. Doable plus a decent heater that works so well for plants in winter. 

If you are looking for a heater that is not heavy yet lightweight with low energy consumption, then add this to your list today!


  • Save energy efficiently: A heater that is very easy to maintain and comes with one setting of 1500W. A big saver on energy consumption.
  • Keeps you warm: It keeps your plants temperate and helps them to bloom in cold weather. Also, a prominent option for keeping your house warm too.
  • Safeguard: The way it is built protects against water splashing. So you need not worry about water scattering through the air or onto something.
  • Friendly & movable: Easy to carry and known for its lightweight and portability. Move it anywhere comfortably. Whether it is inside your house or greenhouse, it is super effortless to move.
  • Inexpensive: The absolute part is that the greenhouse is remarkably low maintenance. This means it does not demand a lot of handling of the operations. It is a doable and excellent heater.

Pros & Cons of The Dr. Heater DR218-1500W Infrared Heater


  • Super-tough building. Last a lifetime.
  • Practical design for easy handling
  • Good for greenhouses that are medium-sized.
  • Provides agreeable heating operations


  • Consumes more electricity

3. Amazon Basics Portable Eco-Smart Space Heater

BrandAmazon Basics
MaterialMetal Body
Item Weight14.55 Pounds
ColorBlack, wood

This is a short but heavy heater that has hidden casters on the bottom, so it is easy to move where you need it.

Many heaters do not have any remote and are required to be turned on manually to make temperature adjustments. However, this greenhouse heater has a remote and is also built with digital controls on the heater. 

You can regulate the temperature from the comfort of your bed. Even though the heater quickly warms up the greenhouse, space heaters are all about the size of your greenhouse. According to the size, the heater will ‌heat the entire room.


  • Adjust & operate: Effortless to operate and comes with an LED display. It also has an adjustable electronic thermostat. A classic portable space greenhouse heater.
  • Sensor for protection: Over-heat sensor for safety and warning. You get a warning when there are fluctuations in temperature, thus, making it a reliable heater for the greenhouse.
  • Temperature settings: Easily adjustable temperature settings. It can heat rooms to 160 sq ft.
  • Smart with ECO-smart:: It is made of four infrared heating elements. And ECO-smart settings for more significant savings on energy. (750W and 1500 W power settings).
  • Remote: Conveniently operate buttons from both the remote and unit.

Pros & Cons of Amazon Basics Portable Eco-Smart Space Heater


  • A heater with compact space black. And wood.
  • Wheels make it easy for the heater to roll around.
  • Easy to operate buttons from both the remote and unit.
  • Built-in with 3 buttons on the remote to adjust the thermostat.


  • Low temperature in eco-mode

4. The Robust iPower Electric Fan Heater

MaterialMetal Body
Item Weight8.75 Pounds

This greenhouse heater is specifically made for wet environments and stainless steel housing and is enclosed and waterproof. An ideal solution for heating, as it is very comfortable to use. Smart yet competent, a friendly size electric heater with a fan. 

The size is close-packed, which makes it pretty easy to fit into off-limit spaces. It is also a huge saver on energy consumption.


  • Control & overheat protection: The heater is equipped with a heat limiting control, and it also safeguards against overheating protection circuit. On reaching the desired temperature, it automatically shuts the heater off.
  • Easy to carry: This powerful portable space heater is comfortable to carry, weightless, and doesn’t take up extra space. Hold it and carry it around wherever you want.
  • Easy to move: Absolutely convenient to move the portable fan heater anywhere in the house with a built-in carrying handle. Because it’s weightless, it is easier to move it around.
  • Grow anywhere: IPX4 is waterproof and ideal for areas such as greenhouses, barns, and grow tents. Grow your favorite plants and vegetables anywhere!
  • Compact & powerful: With most space heaters, it also depends on the size of the room. This powerful portable space heater quickly heats ‌small spaces. Large rooms will need a few minutes to warm the room efficiently.

Pros & Cons of The Robust iPower Electric Fan Heater


  • Small, handy design for easy use
  • Sufficiently full for most greenhouses
  • Build to last long, and it is durable
  • Comes with ideal temperature controls
  • Overheat protection


  • Slightly waterproof
  • Low Temperature

5. LightHouse 305mm 45W Eco Heat Greenhouse Heater

MaterialStainless Steel
Item Weight1.67 pounds

The LightHouse Greenhouse Heater range protects plants against temperature and humidity fluctuations. Because it uses less than 50 W per foot, it is cost-efficient. ECO HEAT helps to keep a steady temperature in the growing environment. It’s ideal for propagation areas that have a critical temperature. 


  • Safeguard against fluctuations: Temperature must be maintained lower than 90 and if it fluctuates higher than 90 or too low, it is bad for your greenhouse. This greenhouse protects from sudden fluctuations in humidity and temperatures. An important factor in greenhouse heaters.
  • Power Saver: It consumes less than 50w per foot. This means you save more energy and save money!
  • Rigid and tough: Creates a sturdy environment for your greenhouse. It is built to withstand prolonged. So no need to worry!
  • Size: The heater is conveniently small, which makes it easy to place and handle plus efficient.

Pros & Cons of LightHouse 305mm 45W Eco Heat Greenhouse Heater


  • Small, compact & very efficient.
  • Ideal temperature controls
  • Easy to use & robust
  • Excellent heating and thermostat


  • Might Require adapter/extension

6. AgiiMan Outdoor Patio Heater

MaterialMetal Body
Item Weight5.79 pounds


  • Outdoor patio heater: The electric outdoor heaters use innovative technology. It is pre-programmed because its goal is to generate heat by the garage fan heaters. They will cool down fast to bypass overheating, so their internal temperature will not always stay high. The garage space heating is safer than others.
  • Upgraded to enormous size: The patio heater (120V) is more significant than most in the market. They make the portable electric greenhouse heater with extended cord and floor mats.
  • Power consumption: This is suitable and energy-efficient and consumes less energy to function, which means it saves money. AgiiMan can help with heating costs.
  • Safe and sound: When the portable heater parts get too hot, the automatic system will shut the unit down. Children and pets can be safe around.

Pros & Cons of AgiiMan Outdoor Patio Heater


  • Portable Mini Heater
  • Move around easily
  • 3 modes with adjustable thermostat
  • Ultra-quiet
  • Easy to carry
  • Overheat protection device


  • Mild Vibration
  • Takes time for proper heating
  • hot to handle

When to Heat Your Greenhouse?

Plants should have enough sunlight, temperature, and humidity to grow in a greenhouse. Greenhouses demand a lot of sunlight in the morning. Consider the location while choosing a greenhouse for trees and buildings. Environmental controls are possible because of water, fuel, and electricity. 

Extremely vital that you use trustworthy heating and cooling. Warning devices must warn you when there’s a power failure or extremity in temperature.

Plants that are to be grown affect the house temperature requirements. Most plants might require day temperatures of 70 to 80 degrees F. 

Some plants grow best in a cool greenhouse with a night temperature of 5

0 degrees F.

How Heater Power Is Measured?

Generally, the power and energy are measured in watt-hours. British. Wattage: Multiply the area in feet by 10. The number of watts = Area x 10.

For houses with 8 feet high ceilings, this result is valid. In modern homes with ceilings greater than 8 feet, the rule of thumb is 1.25 watts per square foot. 

Suspect if the walls or ceilings have a deficiency in insulation. If your walls are deficient, then add some percentage to your calculation.

Buyer’s Guide: How to Choose the Best Greenhouse Heater?

It is very crucial to go through every factor thoroughly before making a buying decision, especially when it comes to greenhouse heaters. 

Here are a few aspects of deciding on choosing the best greenhouse heater:

1. What is the Size of your Greenhouse?

The size matters! You might think that it is okay to use a size up or down according to your preference, but you might end up harming your greenhouse than doing any good. If the room area is relatively small and the heater is quite large than the room, it will throw a lot of heat that could kill the plants or ruin the horticulture process. And if the greenhouse is medium to big as compared to the greenhouse heater, there will be less warmth in the greenhouse for your plants to grow. That is why always consider the size of your greenhouse before buying.

2. How Cold is your Area?

On summer or sunny days, it is manageable without heaters. But the challenge comes with winter. In cold weather, the greenhouse is a must for your plants. Now, going randomly after any heaters just won’t work. Why? 

Because it depends on the temperature of your surroundings. If the location where you live is cold or colder, then you already know that you are in need of a heater. If not, you can still utilize a greenhouse heater, but it is manageable without too.

3. What Resource can you Afford in your Area?

There are natural gas, propane, and fuel oil resources for heaters, and it is up to you which one is affordable and cheaper for you. These are commonly used resources, but if you are seeking other alternatives, then wood, coal, methane, waste oil, waste heat, and geothermal heat are also available.

Remember that some resources are toxic, so your best option is to choose the one that won’t do you much harm.

4. Is your Greenhouse Insulated Properly?

Greenhouse insulation protects the plants from harsh weather ‌and, in summer,  keeps your plants comfortably happy. But if it is not insulated properly, the plants won’t thrive in the proper environment.

Layering insulation with more coats is highly effective and recommended to protect the plants in winter. So if you are using bubble wrap or plastic bottles as cloches, then layer up for better insulation.

5. Are you Willing to Grow a lot of Plants?

Greenhouse size equals greenhouse heater; it is simple math. Small greenhouses need a small to medium size heater and vice versa. If you are growing a lot of healthy veggies and plants, the ideal solution would be to calculate the size of the greenhouse and how many plants to grow, and then choose a heater that’ll be useful to you.

6. Will you Grow a Variety of Plants?

Plants need different temperatures. Some like the warm weather while others prefer the cooler weather. The way you use your greenhouse has a lot to do with the heater you choose. Plants make heat as well. Are you going to grow a lot of plants or just a tiny amount?

If yes, then you must think about how you’ll be managing your greenhouse efficiently in winter. And then make the exact pick for your greenhouse. Compare the best greenhouse heaters according to your needs and surroundings, making it easier to choose one from the best options available.

Best Greenhouse Heater: FAQ

What sort of heating systems are appropriate for greenhouses?

There are four types of heating systems: Central heating systems, local heating systems, unit heaters, Convection heaters, Radiant heaters, and Solar Heating. It relies on what you need. Some systems cost less to operate.

How much should be the temperature of a greenhouse?

Anything hotter than 90 degrees is fiery. It is imperative to lower the temperature whenever it reaches above 90 degrees.

What is the most useful way to heat a greenhouse in winter?

It feels great to keep your house warm on cold days. It’s possible to provide a constant temperature and eliminate cold spots in a greenhouse with the help of a garage and workshop heating system.

Does a greenhouse need a heater?

It is manageable in summer or sunny places. But winter won’t be easy for you and your plants, so a greenhouse is the best option.

Should I utilize a ceramic heater in a greenhouse?

The box is small enough to function on electricity. They are small; they are an excellent choice for small greenhouses.

Can a solar panel run a heater?

Solar panels can ‌power any home appliance because of the electricity it produces, and the solar collector only makes hot water.


Choosing a suitable greenhouse per your requirements is essential, so you must diligently make your buying decision. Always compare before you conclude because it provides of general understanding of all the pros and cons. Ensure that the factors which require you to select a greenhouse are thoroughly understood. Give your plants the love they deserve!