Best Small Greenhouse Heaters
Why Heat Your Greenhouse?
Use a best small greenhouse heater to keep your greenhouse frost free and suitably heated in a cost effective way. Maintaining sufficient ventilation and warmth whilst retaining light levels is key to protecting your plants through the winter.
Using Horticultural bubble wrap on the greenhouse is also a tried and tested method. Buy one that has large bubbles as this provides most insulation and light. Use it carefully and it can be stored, to re-use in following years.
During prolonged cold periods cover your plants with Horticultural fleece as well. This will give added layers of insulation and will keep the costs of running heaters down.
Don’t over heat the greenhouse, you can keep your greenhouse frost free at a temperature of 3degrees, this is sufficient for most plants.
Small greenhouse heaters are an essential part of indoor, winter plant care, but what type of heaters are best for a greenhouse?
This article highlights options for best small greenhouse heaters available in electric or gas, in a reasonable price range to suit most budgets, in the following categories:
- Electric Greenhouse Heaters
- Propane Greenhouse Heaters
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Best Small Greenhouse Heaters
Electric Greenhouse Heaters
Please Note that when you use any electrical items in your greenhouse, including heaters, grow lights, fans and lighting you MUST have an earth safety trip switch as part of the fuse board linking the mains electric to your greenhouse.
Palma Heater with digital Thermostat 2kw
The Best Place to Buy: Amazon
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Product Details
- 2kW fan heater with digital thermometer
- Floor standing
- Strong metal casing
- Stainless steel heating element
- Good quality fan
- 28 x 19.5 x 31.5cm
- IPX4 rated
- Inexpensive to operate
- Splash proof
The Palma Heater is sturdy and well-built. The fan circulates air around the greenhouse to keep an even temperature.
The fan and electric automatically switch off when the desired temperature is reached.
This model can be used as a fan only in summer or set the heater to 1kW or 2kW depending on the size of the greenhouse.
Compact, easy to use and heater settings are reliable, use in conjunction with the included thermometer.
Suitable for heating a 8×12 greenhouse or maybe a slightly larger one if using on frost free setting.
Pros
- Compact
- Well built
- Easy to use
- 1kW or 2kW
- IPX4 Rating
- Digital thermometer included
- Excellent price
- Suitable for small to medium greenhouse up to 8×12
Cons
- Larger greenhouses will require a more substantial heater with more output.
- Needs a safe electric supply to the greenhouse
Waldbeck Strato Fan Heater – Greenhouse Heater
The Best Place to Buy: Amazon
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Product Details
- Sturdy, quality construction
- Stainless steel casing
- Carry handle
- Support Feet
- IPX4 Rating
- Splash Proof
- Inbuilt Thermostat
- 2 heat control modes
- 2kW output
- 34 x 26 x 23 cm
The Waldbeck Strato Fan Heater is robust and well-made, it is an ideal choice for your greenhouse. It provides good air circulation to give an even temperature with up to 2kW output.
It is efficient and easy to use. Once the desired heat is reached it will automatically switch off. It will switch back on if the temperature drops therefore providing a good control of consistent heat and air.
Pros
- Sturdy construction
- Splash proof
- Integrated thermostat
- Easy to use
- Efficient
- 2 heat control modes
Cons
- Needs a safe electric supply to the greenhouse/workshop
EcoHeater Slimline Greenhouse Heater
The Best Place to Buy: Amazon
Star Rating ⭐️⭐️⭐️⭐️and half
Product Details
- 190 watt
- Keeps a greenhouse frost free
- Slimline 1500mm
- Economical
- Efficient
- In built thermostat control
- Floor or Wall mounted
The EcoHeater Slimline is easy to install, it can be floor or wall mounted using the fittings and feet supplied.
It provides sufficient heat to keep a greenhouse frost free.
Economical to run.
Pros
- Economical
- Efficient
- Built in Thermostat Control
- Good Price
- Takes up very little room
Cons
- Suitable for a small greenhouse only
- Needs a safe electric supply to the greenhouse
Propane/Gas Greenhouse Heaters
A propane/gas heater is more convenient in terms of not having any cables to run. They are more mobile too for the same reason. Be sure to buy enough propane and spare wicks to last through the period that you wish to be heating your greenhouse. Ensure that you have sufficient ventilation.
Biogreen WM-P5 Warmax Power5 Paraffin Heater
The Best Place to Buy: Amazon
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Product Details
- 40% longer burn time
- Traditional design
- 4 Burners
- Snuffers
- Robust and well-made
The Biogreen Parrafin Heater is a traditional paraffin Greenhouse Heater and will provide enough heat to keep the greenhouse frost free.
You have to put it together yourself but there are instructions provided.
As there are four burners you can have variable heat, it depends on the size of your greenhouse as to how much output you require.
It is easy to use and you can purchase replacement wicks and the paraffin required together as one package.
The flames are covered by a flue with a vent hole making this burner safe to use as possible.
Please note that any heater with naked flames should be kept a suitably safe distance from any combustible materials.
Pros
- Good price
- Easy to use
- Variable heat from four burners
- Economical
Cons
- You have to buy replacement wicks and gas
Eden Gas Greenhouse Heater
The Best Place to Buy: Amazon
Star Rating ⭐️⭐️⭐️
Product Details
- Sturdy Robust Construction
- 2kW Output
- Ignition
- Safety Valve
- Thermostat Control
- 48 x 30 x 13
The Eden Gas Greenhouse Heater is robust and well-built. It is perfectly suitable for keeping the temperature of your greenhouse at a constant frost free level.
A 19kg propane tank should last approximately 10 days on a low setting, keeping the temperature to about 12 degrees in an average 6 x 8 greenhouse. The Eden heater will use considerably more gas should you wish to keep the greenhouse a lot warmer. But on a frost free heat it is economical and efficient.
Pros
- Easy to use
- Efficient
- Safety Valve
- Thermostat Control
Cons
- Can be expensive on gas
- Do not use in Pollytunnels
- Quite expensive to buy – plus gas tanks
I have given you several options here for greenhouse heaters, I hope that you have found the information useful and that it will help you to decide which heater you need.
Keep your plants warm and give them optimum growing conditions this winter and get ahead of the game by growing garden ready plants earlier than usual.
Thank you for reading and please do share with friends and family and social media.
Any questions can be added to the comments box below and I will reply as soon as I can.
Happy gardening.
Hey thanks for the awesome post! I have a greenhouse where i live, and I actually love it! The heater i have is okay, but it doesn’t have a lot of power, and it’s a big greenhouse. I actually like the looks of the simplicity one. It is a great price too! Have you used all of these, or which one do you like best?
Hi Jessie, Thank you for your comments.
I have clients whose greenhouses I often work in and all these heaters have been used by myself, hence my confidence in recommending them.
Personally I prefer the Simplicity Heater Set as it is robust and well built.
Louise
Actually my grandad was big into greenhouses and products to help his plants. I really think this would be a good addition. I shall bookmark the page to show him. I love anything that has to do with gardening. I think overall the post is well organized and there is a lot of knowledge to learn from this as well.
Hello Ian
Thank you for your comments, happy gardening
Louise
Thanks for your review! To be honest, I have had the same question a few months ago when I looked for what could be the best type of heater. My search resulted in me believing that infrared heaters were the best types of heaters that are available. It may be more expensive than the ones on your list on the front end, but the benefit of infrared is that it doesn’t heat the air like a regular heater does. What do you think?
Hi Mikhail,
Thank you for your comments and good question about the infrared heaters. I haven’t used one in a greenhouse so I don’t have the knowledge to review one. However I do think they are quite expensive and the heaters I have reviewed are better value for money.
Louise
You are informing me about the importance of making use of the heaters. I didn’t think that they were that important. I own one at home where it is firmly taken care of by my mum. well, we both own it though. I like your list here but I will like to know if you have used any of this heaters so i too can make use of it as well.
Hello,
Thankyou for your comments.
A greenhouse heater is important if you wish to extend the growing season and make the best winter use of your greenhouse.
Personally I like the Simplicity Heater Set best of all. I have used them all in various size greenhouses.
Best Wishes
Louise
Making use of the right heater in a green house would really help ventilate and maintain the balance for the plants in there and that to me, is great enough to know of. I have been trying to make my researches o the best heater to get and the Waldbeck Strato Fan Heater has popped up quite a few times. So, when I saw it here, I decided to go for it. The only con is not really a problem for me because I have a stable supply of elctricity.
Hello,
Thank you for dropping by and I very happy to know that I have helped you to make your decision on which heater to get. I hope that you will be happy with it, and what’s more…that your plants will be happy too.
Happy Gardening
Louise
I love the sturdiness and firmness of this the Simplicity heater as that would ensure that it is well stationed and besides, this can blow heat to the whole of the green house and that is cool by me. However, Since it can not be used for bigger green house, I would rather go for another heater because my greenhouse is kind of very big.
Hello Shelley, thank you for your comments. Yes I agree that the Simplicity Heater is not for a big greenhouse, You can get them with a larger kW output however.
All the Best Louise