Greenhouse heaters are a powerful gadget to have during the winter. Firstly, they protect your plants from the harsh cold weather in the UK. Secondly, greenhouses heating impacts air circulation and dampness which affects seeding and propagation of plants.

Keep in mind greenhouse heaters are not for everyone as there are cheaper and even free ways to keep your plants warm during cold conditions.

There are three types of heaters the paraffin, gas and, electric each has both pros and cons to them. While most gardeners prefer the paraffin greenhouse heaters which are affordable and easy to manage. They run on crude petroleum and emit carbon dioxide that your plants love. But, they are hard to maintain and is only controlled manually.

Then there are the gas heaters, which are cost-efficient and runs on natural gas. One downside, your greenhouse will need proper ventilation to get rid of the harmful smoke, and fumes these heaters produce.

Lastly, the electric heaters which are the most expensive of the bunch, they do not produce any fumes and is very useful for holding the temperature at constant levels. One flaw is that electric heaters concentrate heat closer to where they’ve been installed. At the same time, they are great for small greenhouses as for large greenhouses it is best to install a second heater for equal heat distribution.

I have searched high and low to find the best greenhouse heaters in the UK; so without further ado, here are my top picks. Let me make this clear; I can not buy hundreds of greenhouse heaters and review them, but I’ve help friends installed electric heaters and have personally set up both gas and paraffin heaters

Our Pick For Paraffin Greenhouse Heaters


Biogreen WM-P5 Warmax Power5 Paraffin Heater

If you must buy a paraffin heater, purchase it from Biogreen. Biogreen is a famous business in the UK that provides excellent products and services. With that said, their paraffin heaters are no exception. They are of better quality than their competitors and have twin lamps, with each of them having twin wicks.

The tank holds up to 4- liters of paraffin and burns continuously for at least 3-4 days when the tank is filled. The slick design allows the chimneys to fit perfectly on the lamp. Be careful, with the chimney because they are hot when lit. Also, place your heater in a spot where your leg or hands can’t touch it by mistake (‘happened to clumsy me,’ I have the burn mark to prove it).

There’s a little lever to the back that reveals the wick when lifted, and to extinguish it, just push the lever back down. Another upside is Biogreen has its own wick and here’s a recommended paraffin to buy separately when needed.

Why Buy This Product?

  • Cheap compared to electric heaters.
  • Traditional design.
  • Great for small greenhouses.

Why Not Buy?

  • Continuous upkeep.
  • Paraffin is expensive.
  • Chimney becomes rusty quick.


Biogreen PHX 2.8/GB Phoenix Electric Fan Heater 1.0/ 1.8 /2.8KW

One of the top electric greenhouse heaters in the UK, the Biogreen Phoenix is very expensive over £200.00. What makes an electric heater superior from the paraffin? They make the body of stainless steel making this baby rust free. The Biogreen Phoenix circulates up to 460 m3 per hour protecting your greenhouse from frostbite.

There are no strong streams of hot air; the high circulation cools the heating elements, so the temperature remains under 40 °C, this means; the hot air stays on the ground. The thermos has sensors on the outside which measures the outside temperature, this enables a constant change to the temperature in your greenhouse anywhere from 0 to 26° C. Therefore, making the required temperature accurately regulated (saving energy).

The Biogreen electric greenhouse heaters are used all year round; they provide ventilation in summer and heat from 1000 to 2800 watts in the winter. Above all, this heater is well-made and will be an excellent addition to your greenhouse.

Why buy this product?

  • Stainless steel body.
  • Automatic measures your greenhouse temperature.
  • Saves energy.
  • Easy to maintain.

Why Not To Buy?

  • Expensive.
  • Adds to the electric bill.

Our Pick For Gas Greenhouse Heaters


Lifestyle Greenhouse Heater

The Lifestyle greenhouse heater is a fantastic gas heater; they are easy to set up and simple to maintain. Regularly, check up on your heater ensures the gas level is not low; this reduces the chances of frozen crops.

This gas heater has a minimum temperature of -3 °C, try to get the heat as low as required because the Lifestyle burns through gas quickly. With features such as an oxygen depletion system; that ensures the air level is safe for your plants by detecting the concentration of oxygen in your greenhouse. Other features include a thermostat, lasting blue flame burners, safety valve, piezo ignition, and stainless steel body.

Buyers complained of failing and difficult to use thermostat. Because they are responsible for temperature control if not adjust correctly; your heater will deplete the supply of gas quickly.

This product has positive reviews and one of the popular gas heater available in the UK; therefore, I recommend this product.

Why buy this product?

  • Easy to use.
  • Perfect for greenhouses.
  • Heat large areas.

Why Not To Buy?

  • Burns gas quickly.
  • The Thermostat gives trouble.

Before choosing the perfect heater, there are a few things to consider, the size of your greenhouse, what the outside climatic will be, and what temperature you are trying to maintain. You will also need to pick between a gas, electric or paraffin heaters they all have a positive and negative side to them.

Remember, there are other ways to heat your greenhouse without “breaking the bank”; here is a great YouTube video from GreenShortz DIY he uses fire and the ambient heat from the ground. There are three parts so make sure you watch them all, don’t stop with him there are lots of videos available if you don’t like his technique.

Pink back to my next post –Best Garden Incinerators.

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