6 Best Greenhouse Heaters [Buyer Guide] 

The Sunhouse Tubular Heater with Thermostat & Mounting Brackets is a little tubular heater that will provide safe, low heat for your greenhouse allowing it to be used for an extended period of time. The heater warms up the environment quickly, coming with an inbuilt thermostat that automatically switches on and off when necessary to keep the greenhouse temperature constant. This saves you the hassle of having to manually ensure the temperature stays optimal.

It is splash-proof and fixed with an easy to adjust knob for manual temperature adjustments if required. The tubular heater designs combines function with visual aesthetics and blends in easily with your greenhouse space. It is easy to set up with just a few simple tools and totally safe around your children or pets.

At 80 watts, the energy consumption is low, and the accompanying wall mounting brackets mean assembly is relatively simple. 

This is ideal if you’re looking for something that won’t break the bank, but still gives you the boost that you’re looking for.

The first Hylite product on this list is another slimline heater that also falls into the easy-to-use category. The Hylite Slimline Eco Heater with built in Thermostat is designed as a high quality, seamless tube solution with a white enamel finish that is easy to clean and looks great wherever you fix it. It also has that greenhouse ‘look and feel’. 

It is both an affordable and efficient solution, with a 55 watt capacity and an inbuilt thermostat. This automatically switches on and off to regulate the temperature of your greenhouse, ensuring that it maintains pre-set optimal conditions in place without getting too hot or too cold. It also helps on energy saving, helping to keep those bill payments down.

It is splash proof and water resistant, ensuring it is not a safety hazard to children or pets. The attached brackets ensure it can be fixed easily to the wall, but they also come with rubber feet to facilitate its placement on the floor. It also has a one and a half meter cord.

This is ideal for someone who is looking for a quick little boost, as the wattage caters to smaller greenhouses too.

Designed specifically for greenhouses, the LightHouse Eco Heat Greenhouse Heater guards against sudden fluctuations in temperature and humidity. It consumes less than 50w of power per foot which is about the same rate as a regular light bulb and 25% less than a lot of similar products. 

It’s built to keep the temperature stable in the autumn and winter months at a relatively low rate.

Available in multiple wattages of 45w, 80w and 135w, it can be mounted on the wall or attached to soil beds, heating up your soil environment and the seedling root ensuring a stable environment for optimum growth. We also like the green colour it comes in, blending perfectly with the plants and bringing a more visually appealing heater to your greenhouse. 

This lighthouse Eco Heater is an easy plug-to-use product  and it does not need too many special equipments to set up. The failures of this nice heater include the fact that It does not work well for large spaces and its durability is questionable

With varying wattage, you can really be flexible with this product and find one that works just for you – which is ideal.

The Hausen Electric Tubular Heater for greenhouses is produced by a brand that specializes in home and leisure products, assuring you of its durability. Affordable, splash proof and power saving, the electric heater provides a constant, stable environment for your greenhouse plants, seedlings and cuttings.

It is compact and well sealed, preventing your environment from frost, damp and condensation. It is available in several tube lengths and wattages, with 90°c and 130°c thermal protectors, so you can choose your model depending on the size of the greenhouse or space of intended use.

It comes with a 1.5 metre cable, fixings, mounting brackets and two thermal protectors of different degrees.  The only thing to be conscious of is that there may be a bit of smoke when you first use it, but this is not to worry about as it stops after usage for some time.

Though it is our only heavy-duty heater on this list, you can be sure of the Simplicity Heater Set’s reliability in that it’ll heat your greenhouse well and to the desired temperature. Although recently brought to market, it uses old fan models to create a reliable mix of the old and new fan heater.

This heater is ideal for use in larger greenhouses, keeping your plants frost free and well above the temperature outside. It also works well for other spaces and outbuildings.

Its tough metal exterior means that it can be used in multiple capacities. The coil and fan can be used to target air in several directions, ensuring an even distribution of heat.

It is IPX4 rated ensuring that it complies with the most rigorous of safety standards. This heater can also double up as a fan during summer and comes with a 1kw and 2kw heat setting. 

The heater comes with a thermostat in the form of a remote control that shuts off the fan when the optimal temperature is reached, meaning little need for constant manual checking. The notable standout is that it can reach higher temperatures compared to other tubular heaters listed. This product is durable, well sealed, easy to use and can be used all year round.

The only consideration with this model is that the coil does not cool down so quickly after the right temperature has been achieved.

Small, compact and easy to use, the energy efficient Hylite Tubular Heater consumes just 120 watts of power, low compared to most available heaters on the market. Since the power consumed is only about that of two bulbs, you should manage your expectations of what to expect in terms of output, though it is still a very reliable heater for a modestly sized greenhouse.

Though small, you can be sure that the temperature of your flowerbed wont drop to harmful levels and that your tomatoes, chillies, lime, seedlings or cuttings will survive winter. It is a heater that is best suited to small, confined areas.

It is splash-proof and comes with easy to set up mounting brackets. It also comes with an inbuilt thermostat and, although there is no marking on it, you can gradually increase the temperature till you feel it is at its optimal.