Best Greenhouse Heaters in the UK

If you own a large greenhouse to grow veggies, greens, and berries not only for your family but also to sell them on the farmer’s market or supply to small groceries, efficient greenhouse heating is a must to maintain consistently high produce even in winter. To cover larger areas with minimum costs, you need a powerful yet energy-efficient, compact yet performing, and reliable heater that will faithfully serve you season after season. And you’ll get all of this with the Phoenix greenhouse heater from Bio Green.

This electric model packs 2800 watts of power and features fan technology to heat areas up to 25 sq.m. The heating element consistently generates heat while a forceful fan will ensure even warm air distribution around the greenhouse circulating about 460 cu.cm per hour. What’s more, unlike in other models, the heating element here is all high-grade steel. It doesn’t turn red and is not prone to overheating. Hence, you can be sure it will deliver smooth uniform heat without overdrying the air. The whole unit is solidly built and will withstand everyday use in different environments. The body is made of stainless steel that is resistant to damages and rust. Besides, the entire construction is IPX4 approved for safe use in high-humidity conditions.

For your convenience, the Phoenix heater is designed to be installed in different positions. Two sturdy mounting feet will keep it stable on any floor surface or you can mount it on the ceiling using the hardware already included in the set. Whatever installation option you choose, all controls will be within easy reach for hassle-free unit operation.

When planning to build a greenhouse, many gardeners wonder where to place it. Some choose to build it close to the house or even make it part of the building to have free access to the utilities while others don’t have many options and place it in a distant corner of the garden without connection to the mains. If that goes for you too, we recommend you consider the Warmax Power 5 heater from Bio Green.

The unit consists of two tubular burners fixed on the top of a circular oil container and offers a very simple operating principle. The wick is immersed into paraffin oil in the container and connected to the burner in the tube that exudes the heat to the outside. Two mechanical wheels on each burner allow you to adjust the flame height, thus varying the amount of the heat.

This dual burner model can maintain consistently warm air on the area of about 5 sq.m. This makes it best suitable for small to medium-sized constructions and orchard houses without access to the grid. That said, to save on gas and electricity and cover a larger area, you can always install several paraffin heaters.

All-made of first-class steel, the heater is definitely designed to last. The whole construction is solid, sturdy, and rustproof. A circular flat base of the oil container ensures stability and prevents skidding. Moreover, the heater is fitted with anti-tilting mounting brackets for added stability and to avoid accidental tip-overs.

To keep their domestic greenhouses warm in winter, many home gardeners use ordinary floor standing fan heaters you’d normally use to warm up your living space. Yet, most of them go out of order pretty quickly since they are not meant to function under close to freezing temperatures and withstand increased humidity. So, sometimes, it’s not worth saving on buying a specialised heater. Moreover, not all greenhouse heaters are too costly. There are a lot of budget-friendly models distinguished by exceptional quality. And the Simplicity TSE-20A is one of them.

To fit into a humid greenhouse environment and ensure safe use under wet conditions, the model boasts an IPX4-rated construction. It means the unit is securely protected not only from condensation moisture but also from accidental splashes when you water your plants. Besides, a robust steel casing is powder coated for added protection and will show no signs of rust or corrosion even under extensive use.

When it comes to the coverage area of this unit, it depends on how warm you want your greenhouse and, of course, on how cold it is outside. In general, with the power of 2000 watts, the Simplicity will efficiently heat the area of 20 sq.m. By saying “heat”, we mean consistently maintain the air temperature high enough above zero while the outside temperature is not freezing. But the heater will also cope with larger areas if you only need frost protection.

Another thing we can’t overlook is a pretty compact and easy to handle unit design. Packed in a box-like housing and fitted with four sturdy feet, the heater needs no bolting or mounting and will stand stable on any flat surface. Meanwhile, a lightweight construction and carry handle make it extremely portable and you can easily move it to any place you need.

Need an economical and functional electric heater for a small-sized greenhouse and other smaller spaces? If so, look no further. A low energy tubular heater from Sunhouse will get you covered.

Powered by an 80-watt tubular heating element, the unit is meant for places and spots up to 6 sq.m in the area. Unlike fan heaters circulating hot air, this model provides radiating heat. It directly heats the atmosphere around and features a much lower risk of overheat. This type of heater can be safely installed close to the plants or right over the trays and boxes with seedlings since it doesn’t produce a hot air flow and will delicately “embrace” the plants with tender warmth without overdrying. More than that, the biggest benefit of the radiator is that it is intended for continuous operation. An adjustable mechanical thermostat will let you set the desired heat output and the unit will reliably maintain it as long as it is plugged in. To quickly heat up the space and ensure maximum heater performance afterwards, it’s recommended to first run the heater at full power until the required temperature is achieved and then set back the thermostat dial to lower heat that will be controlled automatically.

Offering non-stop operation and automatic ambient warmth control, the Sunhouse is kind of a set-and-forget option that can be used in many different ways. Though alone it will hardly efficiently heat up a large area, several units can do it really great without raising your utility bills too much, taking into account extremely low energy consumption. On the other hand, the model is definitely a real find for spot heating and small spaces. Providing added heat for temperature-sensitive plants, warming up a pump station, small workshop, garage, home gym, a storage room or heating a small vivarium or conservatory, the Sunhouse can handle all that.

Maintaining a favourable greenhouse atmosphere in winter is not an easy task and requires constant monitoring of the temperature, which can be easily done with the help of the premium-quality Bio Green Palma heater. Though a bit pricey, this heater has a lot of perks making its use more convenient and efficient compared to many others from similar price range.

First things first, the unit was thoughtfully designed to withstand greenhouse conditions. It boasts rugged stainless steel construction and solid build. Intended for floor use, it features a curved wire stand that rests on small rubber feet to keep the unit above the ground, ensure perfect stability on any surface, and prevent skidding. Meanwhile, a large handle on the top makes it easy to carry and adds mobility.

With the IPX4 rating, the Palma heater will flawlessly operate even in high-humidity and moist areas. So, it won’t be damaged by some water drops or accidental sprays when you irrigate your plants. However, it should be stated that the unit is not waterproof and you should keep it away from the sprinklers operating range.

The metal housing hosts a 2000-watt coil heating element delivering sufficient heat output to cover up to 16 sq.m. An adjustable thermostat allows choosing between numerous heat options up to 85 degrees Celsius and setting the operation mode either to heat or ventilation (which is a great function to prevent mould growth in summer). In addition, a built-in fan can move up to 163 m3/h ensuring efficient air circulation and quick heating.

A dependable design and adaptable heat performance make this model a good choice not only for greenhouses but also for basements, garages, damper rooms, outbuildings, closed terraces, patios, and storage areas.