The Best Greenhouse Heaters of 2022


A greenhouse heater makes it doable to create appropriate plant and vegetable rising temperatures year-round. Greenhouses are utilized by pastime gardeners for a number of causes: to optimize rising situations, lengthen a plant’s rising season, or create a microclimate for year-round cultivation. But when the mercury drops, a greenhouse would possibly want a little bit additional assist to keep up an acceptable temperature. An excellent greenhouse heater does simply that, warming up the air within the greenhouse and sustaining the temperature safely, reliably, and sustainably. Read on for the most effective greenhouse heater choices to maintain greenhouse crops joyful and thriving.

  1. BEST OVERALL: Bio Green Palma Greenhouse Fan Heater
  2. BEST BANG FOR THE BUCK: Dr. Infrared Heater DR-218 Greenhouse Workshop Heater
  3. BEST GAS HEATER: Mr. Heater Little Buddy Heater
  4. BEST SOLAR KIT: Renogy 200 Watt 12 Volt Solar Starter Kit
  5. BEST CEILING-MOUNTED: Comfort Zone 5000-Watt Fan-Forced Industrial Heater
  6. BEST FOR SMALL GREENHOUSES: Vornado TAVH10 Whole Room Heater with Auto Climate
  7. BEST FOR LARGE GREENHOUSES: Dr. Infrared Heater DR-975 7500-Watt Electric Heater

The Best Greenhouse Heaters


Types of Greenhouse Heaters

In some areas, the solar alone can adequately warmth a greenhouse, however colder areas might name for added synthetic warmth to assist plant development. Greenhouse heaters accomplish that utilizing a couple of totally different strategies relying on the sort of system. Broadly talking, most greenhouse heaters may be categorized into the next varieties: electrical, fuel, photo voltaic, and paraffin.


Electric heaters are environment friendly, simple to arrange, and easy to keep up. Getting began with many electrical heaters is as easy as plugging them into an outlet and switching them on. Since these heaters are additionally reasonably priced, protected, and moveable, they’re amongst the preferred choices for a lot of pastime gardeners. They can even include extra options like built-in thermostats and timers. Electric heaters don’t emit any dangerous fumes, to allow them to be utilized in greenhouses with minimal venting

One draw back of electrical heaters is that they require plugging into an outlet, which suggests {the electrical} system wants to succeed in the greenhouse. Water and humidity can even negatively have an effect on electrical heaters, so be certain the heater is appropriate for utilizing in greenhouse situations. Many electrical greenhouse heaters are splash-resistant to stop water injury and electrocution.


Like fuel patio heaters and different outside heaters, fuel greenhouse heaters use pure fuel or propane to create heat, with propane being way more fashionable. While pure fuel is inexpensive than propane, fewer houses have the required pure fuel pipeline working to the greenhouse, which is the principle cause propane is extra generally used.

Propane fuel heaters are hooked as much as a propane tank, making them an amazing selection for greenhouses that lack an electrical energy supply or a pure fuel line. However, gardeners should substitute the propane tanks regularly to keep up warmth.
Regardless of the fuel sort, it’s essential to make sure satisfactory venting in order that the fuel burns correctly and doesn’t construct up contained in the greenhouse, which may be harmful.


Those needing a sustainable heating technique that’s even simpler to keep up than gas- or electric-powered items can think about putting in a photo voltaic heating system. By pairing a solar panel package with a heater, customers can create a self-sufficient photo voltaic heater for greenhouse use that attracts power from the solar (very like the greenhouse itself). Solar methods don’t require connection to the electrical system, pure fuel line, or a fuel supply.

While there aren’t stand-alone photo voltaic greenhouse heaters in the marketplace but, this thrilling new expertise is price contemplating for sustainability targeted gardeners. Installing a photo voltaic system takes extra work than simply plugging in an electrical heater, however a starter photo voltaic package can present the panels and wiring to get began. Just be certain so as to add a battery so the cost may be saved, permitting the system to function when the solar isn’t out—the instances when heating is most wanted.


Paraffin greenhouse heaters are an old-school possibility for sustaining heat. These fundamental heaters have a wick that, as soon as lit, attracts a liquid gas from the holding tank beneath. Used by gardeners for a lot of many years, these gadgets present a low-cost and steady warmth supply that doesn’t require electrical energy or a fuel line or tank.

However, since they should have a lit flame, they current a hearth danger. Many of these heaters have a security characteristic that extinguishes the flame if they’re tipped over, however as is the case with any flame, they’ll nonetheless pose a hazard. Like fuel heaters, paraffin heaters additionally launch air pollution, so that they want satisfactory air flow for use safely. They’ll additionally want frequent monitoring to make sure the gas supply doesn’t run out. While paraffin heaters are nonetheless utilized by some gardeners, we’ve got not included any in our lineup since safer and extra user-friendly choices are broadly obtainable.

What to Consider When Choosing the Best Greenhouse Heaters

In many climates, a greenhouse heater is critical for cultivating crops year-round. The greatest heater for greenhouse settings helps to create a managed surroundings for plant and vegetable development. Besides the greenhouse heater sort, there are a couple of necessary components to search for when selecting the most effective greenhouse heater to your backyard, together with the heater’s heating capability, temperature controls, and security options.

Heating Capacity

When selecting a greenhouse heater, it’s essential to think about the perfect greenhouse temperature. The plant varieties inside will decide the most effective temperature; winter crops will thrive in a distinct local weather in comparison with tropical crops, for instance. Before selecting how highly effective of a heater is required, think about a couple of components: the aim temperature, the native local weather, and the scale and building of the greenhouse.

One widespread specification seen on greenhouse heaters is a BTU (British thermal unit) score. One BTU refers to how a lot warmth is required to boost the temperature of a pound of water by one diploma Fahrenheit. BTU is basically a measure of power output, so the BTU score signifies how highly effective the heater is.

When it involves heating home equipment, the BTU score is measured in BTUs per hour. The larger the BTU score, the extra highly effective the system. BTU calculators can be utilized to find out extra precisely what number of BTUs are wanted to warmth up a greenhouse (and good ones will think about the local weather, meant temperature, and greenhouse supplies). Some greenhouse heater producers promote the beneficial protection space of their heaters to present gardeners a extra normal sense of protection.

Temperature Control

The easiest of greenhouse heaters are turned on and off manually, which suggests customers should regularly examine the greenhouse temperature to stop under- or overheating. More superior heaters have built-in temperature controls with a thermostat that displays the temperature and switches the heater on and off as wanted.

Choosing a heater with or with out temperature controls relies on private choice. Some gardeners select to go with out if they’ll examine the greenhouse regularly, if the heater is barely used hardly ever, or if they’re assured they’ll select the best heater energy for his or her greenhouse. However, a heater with built-in temperature controls could be very handy and affords nice peace of thoughts, to not point out {that a} thermostat can even assist preserve power since it’s going to solely swap on the heater when vital.

When warmth isn’t correctly circulated, this lowers heating effectivity and might even injury crops if sure areas get too heat. Greenhouse heaters with followers might help flow into the air across the room and stop scorching pockets of air.

Safety Features

Many greenhouse heaters embrace security options to assist forestall any mishaps. One characteristic to think about is an auto shutoff, which can flip off the heater if it will get too scorching or by chance suggestions over. This characteristic helps hold heaters from changing into a hearth hazard.

Electric greenhouse heaters ought to ideally be water resistant to decrease the possibility of injury or electrocution.

Automatic timers are a handy characteristic, however they’ll additionally add to security by giving gardeners the choice to change off the heater earlier than risking the greenhouse overheating.

Some fuel heaters embrace an oxygen depletion sensor that shuts off the heater when it senses the oxygen within the room is low. This probably lifesaving security characteristic ensures the heater shuts off earlier than the oxygen is depleted within the room.

Our Top Picks

The greatest greenhouse heaters described forward are user-friendly and dependable to assist hold tasty vegatables and fruits and prized blooms alive in chilly climate.

The Best Greenhouse Heaters Option: Bio Green Palma Greenhouse Fan Heater


Designed particularly for greenhouses, the Bio Green Palma Greenhouse Fan Heater is the most effective greenhouse heater for a number of pastime gardeners. Stand-out options of this 1500-watt electrical heater embrace its digital thermostat, sturdy stainless-steel construct, and compact floor-standing design. This heater is meant for areas as much as 120 sq. ft, making it appropriate for many residence greenhouses.

This handy heater has an connected digital thermostat that may be mounted at eye degree for simpler use. The thermometer shows ambient temperature and has a management vary of 0 to 90 levels Fahrenheit to cowl the wants of most gardeners. To use, merely set the specified room temperature and the heater will swap on when wanted to heat the greenhouse. This mannequin additionally encompasses a air flow fan to make sure in opposition to undesirable chilly or scorching air pockets.

A light-weight design and carry deal with make the heater simply moveable. For security in a greenhouse setting, this mannequin is IPX4 splash-proof and has an auto-shutoff characteristic in case of overheating.

Product Specs

  • Type: Electric
  • BTUs: 5,120 BTUs
  • Coverage space: 120 sq. ft


  • Easy to arrange and use
  • Robust digital thermostat
  • Excellent air circulation
  • Splash-proof


  • Relatively brief 6-foot energy twine

Get the Bio Green greenhouse heater at Amazon, The Home Depot, Target, Wayfair, or Bio Green.

The Best Greenhouse Heaters Option: Dr. Infrared Heater DR-218 Greenhouse Workshop Heater


Gardeners on a finances will respect the Dr. Infrared Heater DR-218 Greenhouse Workshop Heater, which affords heating for as much as 150 sq. ft for an reasonably priced value. This 1500-watt electrical heater is easy to make use of, with simply sufficient settings to assist hold tender crops heat.

Users can select a warmth or fan-only mode and switch the temperature dial to set the warmth. The heating mode makes use of fan-forced air expertise to encourage air circulation. While the thermostat dial doesn’t show the greenhouse’s ambient temperature, it may be set to keep up a set level temperature.

Although cost-friendly, this unit doesn’t skimp on its security options. It’s designed to remain cool to the contact, has an IPX4 splash-proof construct, and options an automated shutoff if the unit overheats, making it additional protected for greenhouse use.

Product Specs

  • Type: Electric
  • BTUs: 5,200 BTUs
  • Coverage space: 150 sq. ft


  • Affordable
  • Simple to make use of
  • Good security options


  • Does not show ambient temperature

Get the Dr. Infrared Heater DR-218 greenhouse heater at Amazon, The Home Depot, Wayfair, or Dr. Infrared Heater.

The Best Greenhouse Heaters Option: Mr. Heater Little Buddy Heater


For gardeners with out an electrical line to the greenhouse, a fuel heater is a handy resolution. The Mr. Heater Little Buddy Heater is an indoor-safe propane mannequin perfect for small greenhouses as much as 95 sq. ft.

This compact moveable heater is highly effective for its measurement. All it wants is a 1-pound propane cylinder and a click-and-hold contact of the one-button ignition to start out heating. A 5.6-hour runtime fits this heater greatest for light-duty use. Its upright design provides it a small footprint, good for putting within the nook of a small greenhouse. Lightweight and boasting a built-in deal with, it’s simple to maneuver round.

An Oxygen Depletion Sensor and automated shutoff make this heater protected for indoor use. The heater continually displays the oxygen degree within the room, shutting off if it will get too low. In case the unit is by chance tipped over, it’s going to robotically swap off.

Product Specs

  • Type: Gas (propane)
  • BTUs: 3,800 BTUs
  • Coverage space: 95 sq. ft


  • Compact
  • Easy to make use of
  • Oxygen depletion and unintended tip-over security shutoff


  • Only appropriate for small greenhouses
  • Narrow base makes it simpler to tip over

Get the Mr. Heater greenhouse heater at Amazon, The Home Depot, Tractor Supply Co., or Mr. Heater.

The Best Greenhouse Heaters Option: Renogy 200 Watt 12 Volt Solar Starter Kit


Solar energy affords an eco-friendly various to electrical and fuel heaters. For gardeners eager on sustainability, organising photo voltaic panels is step one to making a photo voltaic greenhouse heating system. The Renogy 200 Watt 12 Volt Solar Starter Kit is an easy and dependable photo voltaic package for residence gardeners.

This photo voltaic begin package consists of two 100-watt photo voltaic panels, a cost management, a photo voltaic adapter package, a tray cable, a pair of department connectors, and a set of mounting Z-brackets. This set can present as much as 800 watt hours of day by day output and is designed for outside use with its sturdy, waterproof construct.

This photo voltaic starter package basically offers all the things gardeners might want to begin amassing solar energy; nevertheless, it’s going to should be paired with an acceptable battery and heater to retailer power and warmth the greenhouse.

Product Specs

  • Type: Solar panel
  • BTUs: N/A
  • Coverage space: N/A


  • All-in-one starter package
  • Durable building
  • Designed for off-grid functions


  • Solar panel package solely; doesn’t embrace battery or heater

Get the Renogy greenhouse heater package at Amazon, The Home Depot, or Renogy.

The Best Greenhouse Heaters Option: Comfort Zone 5000-Watt Fan-Forced Industrial Heater


For everlasting greenhouse buildings, a ceiling-mounted heater is a pretty selection. Mounted heaters hold the heater out of the way in which—clear of the plant-watering splash zone and eliminating any tripping hazard. Its heavy-duty construct and space-saving design make the Comfort Zone 5000-Watt Fan-Forced Industrial Heater an interesting choose.

This commercial-grade heater is hardwired in, so it requires some set up, however this design means it doesn’t should be plugged into an outlet. It’s meant to be used in poorly insulated areas, providing highly effective operation perfect for bigger greenhouses. Although Comfort Zone doesn’t listing its protection space, the heater has a excessive 17,065 BTU score.

A fan-forced design, variable mounting angle, and adjustable louvers assist to push warmth to all corners of a room. To alter the temperature, use the straightforward handbook knob-controlled thermostat on the entrance of the unit.

Product Specs

  • Type: Electric
  • BTUs: 17,065 BTUs
  • Coverage space: N/A


  • Ceiling-mounted design
  • Powerful heating
  • Rugged building
  • Fan-forced heating


  • Lacks remote-controlled thermostat
  • Requires set up (hardwiring and mounting)

Get the Comfort Zone greenhouse heater at Amazon, The Home Depot, Lowe’s, or Comfort Zone.

The Best Greenhouse Heaters Option: Vornado TAVH10 Whole Room Heater with Auto Climate


Made for small to medium-size rooms as much as 200 sq. ft, the Vornado TAVH10 Whole Room Heater with Auto Climate is a stable selection for a lot of residence greenhouse buildings. Thanks to vortex air circulation and mild warmth, this light-duty small heater ensures that heat air is correctly unfold all through the room to maintain a balanced temperature with out chilly or scorching pockets.

Users can select between a fan-only, low (750-watt), and excessive (1500-watt) setting, in addition to set a timer or function the heater through a distant management. The digital show permits customers to set the temperature in addition to view the ambient room temperature. Like many different indoor heaters, this heater stays cool to the contact and has a security shutoff in case of extra warmth or being knocked over.

One draw back, nevertheless, is that this heater isn’t particularly designed for greenhouses, so it isn’t splash-proof. Gardeners ought to take steps to make sure this heater isn’t uncovered to water or extra humidity.

Product Specs

  • Type: Electric
  • BTUs: 5,118 BTUs
  • Coverage space: 200 sq. ft


  • Even heating
  • Robust security options
  • Timer characteristic
  • Excellent temperature controls


Get the Vornado greenhouse heater at Amazon, The Home Depot, Lowe’s, or Vornado.

The Best Greenhouse Heaters Option: Dr. Infrared Heater DR-975 7500-Watt Electric Heater


Large greenhouses have larger heating wants, and the Dr. Infrared Heater DR-975 7500-Watt Electric Heater is as much as the duty. While the model doesn’t share the precise protection space for this unit, its spectacular 25,597 BTU score proves it’s a robust selection. Like many heavy-duty industrial heaters, this mannequin may be wall or ceiling mounted. To guarantee correct protection, it encompasses a dynamic fan and 5 adjustable louvers to maximise airflow for giant areas.

For simpler controls, this 7,500-watt heater encompasses a remote-controlled thermostat. Intended for garages, components, warehouses, and greenhouses, it has a temperature vary from 50 to 90 levels Fahrenheit. A low, excessive, and timer mode add much more flexibility, permitting gardeners to decide on the warmth depth and choose an automated shutoff time.

Product Specs

  • Type: Electric
  • BTUs: 25,597 BTUs
  • Coverage space: N/A


  • Wall or ceiling mount
  • Powerful operation
  • Remote managed


  • Requires set up (hardwiring and mounting)

Get the Dr. Infrared Heater DR-975 greenhouse heater at Amazon, The Home Depot, Appliances Connection, or Dr. Infrared Heater.

Our Verdict

The Bio Green Palma greenhouse heater is designed with greenhouses in thoughts and is full of a spread of handy utilization and security options for pastime gardeners, together with a digital thermostat, fan-forced heating, and splash-proof design. Those who desire a less complicated and extra budget-friendly various can think about the Dr. Infrared Heater DR-218 greenhouse heater as a substitute, which comes with fundamental temperature controls and nice security options.

How We Chose the Best Greenhouse Heaters

When contemplating the most effective heater for greenhouse use, we selected greenhouse heaters appropriate for compact greenhouses—the kinds usually owned by residence gardeners. Very giant greenhouses and business greenhouses might have totally different wants. To swimsuit totally different gardeners, we selected a couple of totally different heater varieties, from propane greenhouse heaters for small greenhouses to bigger ceiling-mounted items.

The heaters on this lineup are appropriate for different-size yard greenhouses and have been chosen with hobbyists in thoughts. They are simple to arrange and use, power environment friendly, and low upkeep.

Robust security options earned a number of heaters a spot in our roundup. We prioritized heaters that gardeners will really feel protected to go away within the greenhouse whereas they’re not on the premises.

Tips for Keeping a Greenhouse Warm

Using a greenhouse heater isn’t the one strategy to hold a greenhouse heat. Thoughtful gardeners can preserve warmth naturally with the practices described under, and even in chilly climates the place a heater is critical, the following tips can decrease the quantity of extra warmth wanted.

Insulation can do an amazing deal in serving to a greenhouse entice warmth. Some air circulation is critical in a greenhouse, however be certain to seal pointless air leaks. One fashionable and cheap method so as to add additional insulation to a greenhouse is with Bubble Wrap. Installed throughout greenhouse partitions and ceilings, its small air bubbles assist hold warmth within the constructing.

A heat-retaining thermal mass can even assist the greenhouse keep the next temperature. Large barrels crammed with water are a generally used, cost-effective possibility. The solar heats the water all through the day and a few of that heat is retained after the solar goes down. Heat sinks made of cinder blocks, stone, bricks, and cement are different choices. A well-tended compost pile can even generate a very good quantity of warmth, so think about transferring the compost pile into the greenhouse by winter.

If these strategies can not create and keep the specified temperature, a greenhouse heater is a dependable possibility for gardeners.

  • Insulate the greenhouse by sealing air leaks and utilizing Bubble Wrap to line the partitions and ceiling.
  • Add a thermal mass to retain warmth from the solar.
  • Utilize a greenhouse heater as wanted.


The proper greenhouse heater might help create essentially the most appropriate surroundings for prized crops. However, with a number of varieties of heaters in the marketplace, it may be arduous to seek out the most effective one to your wants. Still questioning whether or not a greenhouse heater is true to your backyard? We’ve compiled a listing of regularly requested questions and offered stable, commonsense solutions forward.

Q. What sort of heating methods are appropriate for greenhouses?

Greenhouses may be heated utilizing central heating methods or moveable heaters. For greenhouses connected to the house or inside attain from residence pure fuel strains, connecting to the central heating system is usually a appropriate selection. For separate greenhouses, select a conveyable electrical, fuel, photo voltaic, or paraffin heater.

Q. How scorching is simply too scorching for a greenhouse?

Generally talking, above 90 levels Fahrenheit is simply too scorching for a greenhouse.

Q. What is one of the best ways to warmth a greenhouse in winter?

A greenhouse heater is one of the best ways so as to add warmth to a chilly greenhouse in winter. Take steps to insulate the greenhouse to keep up the warmth.

Q. What is essentially the most environment friendly greenhouse heater?

A greenhouse heater linked to a solar energy system is essentially the most environment friendly selection.

Q. Can I exploit a ceramic heater in a greenhouse?

A ceramic heater can be utilized in a greenhouse, though it could not have ample heating energy to keep up the temperature in a big greenhouse.

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