What Is The Best Heater For A Small Greenhouse?

Greenhouses are a great way to extend your growing season, protect your plants from damaging weather conditions and pests, and give you a place to grow fresh food year-round. Greenhouses can also be used as additional rooms for relaxing or entertaining. 

If you have a greenhouse or any other small enclosed space that needs heating there are several things to consider when choosing the best heater for the job.

Best Greenhouse Heaters – An Useful Products Guide!
The URL provided discusses the topic of finding the best heater for a small greenhouse.
The article provides information and guidance on selecting the most suitable heater for optimal temperature control in a small greenhouse.
It offers insights into different types of heaters and their features that are ideal for small greenhouse setups.
The URL provides recommendations and expert tips for maintaining a controlled and favorable climate in a small greenhouse.
It is a valuable resource for individuals looking to enhance their knowledge about greenhouse heaters and make informed decisions for their small greenhouse.

Barska Digital Infrared Thermometer

An infrared thermometer is a device that measures the temperature of an object by detecting the infrared radiation emitted from it.

The most common type of infrared thermometer is the Handheld Infrared Thermometer (HIRT). A HIRT uses a single emitter and detector to measure surface temperatures, with an accuracy of 0.1F or better. 

It can be used for both indoor and outdoor measurements, but you must ensure there’s no direct sunlight reflecting off your object before taking its temperature.

When it comes to heating your greenhouse, propane is a popular choice. Find out how much propane it takes to heat a greenhouse and ensure optimal temperature control with our informative guide on propane usage for greenhouse heating.

Bionaire Micathermic Flat Panel Radiator Heater

A radiator is a heating system that uses water to create steam. The steam heats the air in your greenhouse, which then warms the plants and soil. Radiators are an old-fashioned way to heat a greenhouse, but they’re still very effective at keeping plants warm.

The main benefits of using a radiator are

  • They’re cheap to buy and operate
  • They use less energy than other types of heaters (like propane or electric)

Delonghi Dch1030 Safe Heat Ceramic Heater

With a heating capacity of 300 square feet and 1500 watts, this heater from DeLonghi is ideal for small greenhouses. A thermostat allows you to set the temperature in your greenhouse at the level you wish. 

The adjustable tilt and height allow you to point the heat toward where it’s needed most. An adjustable fan speed makes this heater versatile enough for use in garages or workshops as well as greenhouses.

Newair G73 Hardwired Electric Garage Heater

This 1000-watt heater from NewAir is a great option for homeowners who have a small greenhouse or are looking to heat their garages. 

It’s portable and comes with wheels so it can be easily moved around the garage or greenhouse, and it heats up quickly. You can also use this in your workshop or shed as well.

However, this heater is not recommended for indoor use because of safety concerns. If used indoors, it must be kept away from combustible materials like wood piles and flammable liquids like paint thinner and fuel oils.

The NewAir G73 also has an automatic shutoff and overheat protection so you don’t have to worry about accidentally leaving your heater on all day while you’re at work and then coming home to find your entire house destroyed by fire!

Keeping your greenhouse warm is essential for the healthy growth of your plants. Discover easy ways to maintain warmth in your greenhouse with our helpful tips and techniques in our comprehensive guide on keeping greenhouses warm.

Dr. Infrared Heater Portable Space Heater

For a small greenhouse, the Dr. Infrared Heater Portable Space Heater is a great option. It’s portable, has an energy efficiency rating of 80%, and it’s quiet you can’t hear it unless you’re standing right next to it. 

It’s also lightweight, easy to use (plug it in and turn it on), safe, and affordable at just $40 or so online and they even come in different sizes!

BrandDr. Infrared Heater
TypePortable Space Heater
Heating TechnologyUtilizes infrared technology for efficient heating
Power SettingsMultiple heat settings for customized comfort
Adjustable ThermostatAllows precise temperature control
Heating CoverageProvides effective heating for large areas
Energy EfficiencyHigh energy efficiency for cost-effective operation
Safety FeaturesOverheat protection, tip-over switch
Remote ControlConvenient remote control for easy operation
TimerBuilt-in timer for automatic shut-off

Honeywell Heatbud Personal Ceramic Heater

The Honeywell HeatBud Personal Ceramic Heater is a portable, personal heater. It has an adjustable thermostat and can be used to heat up to 450 square feet.

This heater features a tip-over protection switch that will turn off the unit if it is set down or knocked over. The Honeywell HeatBud Personal Ceramic Heater also features a built-in carrying handle for easy portability.

Lasko 6435 Designer Series Oscillating Ceramic Heater

This is one of the best heaters for a small greenhouse. It has a remote control and an oscillation feature, which allows you to easily avoid overheating your greenhouse. You can also use it safely since it’s designed with safety in mind.

If you have an indoor or outdoor greenhouse that doesn’t get much sun exposure, this might be the perfect heater for you.

Are you looking for heating solutions specifically tailored for a cattle panel greenhouse? Our expert advice on heating a cattle panel greenhouse will help you choose the right methods and equipment to keep your plants thriving even in colder temperatures.

Lasko 754200 Ceramic Heater With Adjustable Thermostat

The Lasko 754200 Ceramic Heater is a great choice for your small greenhouse. It has an adjustable thermostat and ceramic heating elements, so you can make sure it will be the right temperature for your plants. 

It’s also equipped with a remote control, so you don’t have to get up off of the couch just to turn it on or off.

This heater has a noise level of 50 decibels, which means it won’t be too loud while running in the background while you’re working in the greenhouse at night. 

This heater also comes with safety features like an over-temperature protection switch, tip-over switch, and auto-shutoff when tipped over or unplugged (among other things). 

Lastly, this heater has low and high settings and manual fan speed controls so that anyone can find something that works for their needs.

TypeCeramic Heater
Adjustable ThermostatAllows precise temperature control
Heating ElementEfficient and powerful ceramic heating element
Safety FeaturesOverheat protection, cool-touch exterior
OscillationOptional oscillation for even heat distribution
Compact DesignSpace-saving and suitable for small to medium spaces
Power SettingsMultiple heat settings for customized comfort
Built-in TimerSet the heater to automatically shut off after a set time

Lifesmart 6 Element W/Remote Large Room Infrared Quartz Heater

The LifeSmart Large Room Infrared Quartz Heater is the ideal heater for a small greenhouse. It has 6 elements and a remote control, which means you can sit back in your chair and adjust the temperature with ease. 

The thermostat on this unit allows you to set your desired temperature, and it will automatically turn off when that temp is reached. It’s also very quiet, making it easy to go about your daily business while still keeping warm.

This unit runs at only 1/3 of an amp per hour much less than other heaters. This means it uses less energy than conventional models do and costs less over time as well. 

And because it’s so lightweight (13 pounds), you can easily move the heater wherever you need it or store it away when not in use.

Planning to build a greenhouse in snowy conditions? Our guide on building a greenhouse in snow provides expert insights and practical tips to help you construct a sturdy and functional greenhouse that can withstand harsh winter weather.

Optimus H-1322 Portable 2-Speed Fan Heater With Thermostat

The Optimus H-1322 Fan Heater has a thermostat, runs on standard household currents, and can be used as a space heater or a fan. With 3 heat settings and an adjustable thermostat to keep your greenhouse at its optimal temperature, this model is sure to keep your plants warm in any season. 

The fan setting is ideal for winter months when temperatures are below freezing outside and you need to move the air around inside your greenhouse so that frost doesn’t build up on the leaves of your plants. 

It also comes with a remote control so that you don’t have to get up every time you want to change the settings or turn it off!

TypePortable Fan Heater
Speed Settings2
PortabilityLightweight and easy to move
Heating ElementEfficient and powerful heating element
Safety FeaturesOverheat protection, tip-over switch
Adjustable TemperatureAllows precise temperature control
Compact DesignSpace-saving and suitable for small to medium spaces

Pelonis Ny1507-14a Electric 1500w Oil Filled Column Radiator Space Heater

The Pelonis NY1507-14A Electric 1500W Oil Filled Column Radiator Space Heater is a great choice for a small greenhouse. It’s 1500 watts, so it will raise the temperature in your greenhouse by quite a bit. 

The thermostat can be set to high or low, and the auto-off function ensures safety when you’re not around (or if you forget about it).

Plus, it has an oil-filled design that gives off heat without producing too much noise like other types of heaters would. You can also control this heater with its remote control!

It comes with an extension cord which makes it even easier to place where you need it most.

Vornado Avh2 Plus Whole Room Vortex Heater

Lastly, the Vornado AVH2 Plus Whole Room Vortex Heater is another great choice for a small greenhouse. With over 1,000 reviews on Amazon, it has a rating of 4.4 out of 5 stars and customers have raved about how well it works to circulate air and even humidifiers. 

They also love how quiet this machine is and how easy it is to assemble. This heater comes with variable speed settings that allow you to control just how much heat you want in your space, as well as a timer that can be set anywhere between 15 minutes up to 7 hours so you won’t accidentally leave this running all night long.

If you own an IKEA greenhouse cabinet, sealing it properly is essential for efficient climate control. Discover the best techniques for sealing IKEA greenhouse cabinets and create an optimized environment for your plants to thrive and flourish.


If you are looking for the best greenhouse heater, then you should consider purchasing one that is energy efficient. This means that it will save you money on electricity bills in the long run and keep your plants healthy at all times. 

The right choice will also depend on where you live because some areas are colder than others. It’s important to consider these factors before making any decisions so make sure they fit within your budget while still providing enough heat throughout the entire season so none of them die off or get frostbite!

Further Reading

Here are some additional resources for further reading on the best heaters for small greenhouses:

Evergreen Seeds: Best Heater for Small Greenhouse

Explore this comprehensive guide to find the best heater options specifically designed for small greenhouses, ensuring optimal temperature control for your plants.

Greenhouse Emporium: Best Greenhouse Heaters for the Cold Season

Discover a selection of top-rated greenhouse heaters that are ideal for the cold season, helping you maintain a suitable climate for your plants’ growth and protection.

The Family Handyman: Best Greenhouse Heaters

Check out this handy list of the best greenhouse heaters, featuring various types and models to suit different greenhouse sizes and heating needs.


How do greenhouse heaters work?

Greenhouse heaters typically use different heat sources such as propane, electric elements, or fuel combustion to generate warmth within the greenhouse, creating a controlled and favorable environment for plants.

What factors should I consider when choosing a greenhouse heater?

When selecting a greenhouse heater, consider factors like the size of your greenhouse, the desired temperature range, energy efficiency, safety features, and ease of installation and maintenance.

Can I use a regular space heater in a greenhouse?

While it’s possible to use a regular space heater in a greenhouse, it’s important to ensure it’s suitable for greenhouse use, has the necessary safety features, and can adequately heat the space without causing any hazards.

How many heaters do I need for my greenhouse?

The number of heaters needed for a greenhouse depends on several factors, including the size of the greenhouse, the outside climate, insulation, and the desired temperature. It’s recommended to calculate the heating capacity required based on these factors and choose the appropriate number of heaters accordingly.

Are there any energy-efficient options for greenhouse heating?

Yes, there are energy-efficient options available for greenhouse heating. Some heaters are designed to maximize energy efficiency, utilizing advanced technologies like thermostats, programmable timers, and zone heating to optimize energy consumption while maintaining the desired temperature within the greenhouse.