8 best portable greenhouse heaters

Portable greenhouse heaters are devices designed to provide supplemental heat to greenhouse spaces, helping to maintain a suitable temperature for plants, especially during colder months or in regions with harsh winters. These heaters are a crucial tool for avid gardeners and commercial growers, as they ensure that plants receive the warmth they need to thrive in an environment that might not naturally provide adequate heat.

Here are some key points to consider about portable greenhouse heaters:

  1. Purpose: Portable greenhouse heaters are primarily used to prevent frost damage and promote plant growth by maintaining a consistent and warmer temperature within the greenhouse. They are especially important for protecting sensitive plants during the colder seasons.

  2. Types: There are several types of portable greenhouse heaters, including electric, propane, natural gas, and paraffin (kerosene) heaters. Electric heaters are popular due to their ease of use and safety features, making them a common choice for small to medium-sized greenhouses.

  3. Electric Greenhouse Heaters: Electric heaters are energy-efficient and produce heat through electric resistance coils or ceramic elements.They are typically safe for indoor use because they don't produce harmful emissions, making them a suitable choice for enclosed greenhouse spaces.

  4. Features: Modern portable greenhouse heaters come with various features such as adjustable thermostats, multiple heat settings, timers, and safety mechanisms like overheat protection and tip-over switches. These features help users maintain a stable and safe heating environment.

  5. Size and Wattage: The size and wattage of the heater you choose should depend on the size of your greenhouse and the desired temperature. Smaller greenhouses may only require a heater with 1000-1500 watts, while larger structures may need heaters with higher wattage or multiple units.

  6. Placement: Proper placement of the heater is essential for effective heat distribution. It's generally recommended to position the heater near the floor and ensure that it circulates warm air evenly throughout the greenhouse.

  7. Safety Considerations: Safety is a paramount concern when using portable greenhouse heaters. Make sure the heater is UL-listed and complies with safety standards. Keep flammable materials away from the heater, and regularly inspect it for any signs of damage or wear.

  8. Energy Efficiency: Consider the energy efficiency of the heater to minimize operational costs. Some models are more energy-efficient than others, and choosing one with good insulation and efficient heating elements can save you money in the long run.

  9. Ventilation: Proper ventilation is essential when using any type of heater in a greenhouse. It helps regulate humidity levels and ensures the removal of excess moisture and carbon dioxide produced by the plants.

  10. Maintenance: Regular maintenance, including cleaning and inspecting the heater, is crucial to keep it in good working condition and extend its lifespan.

In summary, portable greenhouse heaters are valuable tools for maintaining optimal temperature conditions for plants in greenhouses. Electric heaters are a popular choice for their safety and ease of use, but it's essential to select the right size and wattage for your greenhouse, prioritize safety, and ensure proper ventilation to create a conducive environment for plant growth.

Below you can find our editor's choice of the best portable greenhouse heaters on the market
  

Dr. Heater DR218-1500W Greenhouse Garage Workshop Infrared Heater, 1500-watt

Dr Infrared Heater

Based on 436 reviews Check latest price

Product description

In colder months when there is freezing temperatures outside, using a greenhouse heater can keep your plants from freezing. The DR Infrared Heater DR218 greenhouse heater is a professional choice for your tender plants. The DR218 model provided a reliable and efficient heat source to your greenhouse plants. This greenhouse heater, permanently lubricated for life, uses a totally enclosed, thermally protected and heavy duty ball bearing motor that provides long life with very low maintenance required. It has a precision temperature sensor with a built-in over-heat protection, adjustable thermostat control, which allows you to create the best climate for your plants. Plus, this heater is equipped with heavy duty steel housing, an IPX4 structure that is protected against water splashing. Order one today and protect your tender plant from becoming a frosted, soggy mush and keep your young plants snug and warm until spring.

  • 1500W comes with only one setting
  • Keeping your tender plants warm and thrive in the best climate
  • IPX4 structure and is protected against water splashing. Heating coverage: 150 Sq. ft
  • Light weight and portable
  • Low maintenance needed

User questions & answers

Question: Is the heater safe to be used in a small greenhouse (5wx6lx6.6h) to be installed on the deck with outlets on the wall close to deck
Answer: Made in China. No larger size.
Question: Is this big enough to heat a 8x12 foot greenhouse
Answer: That is odd, mine did not have a smell to it at all. Could be that it may have been packed or stored in warehouse with cosmetic items perhaps? I would suggest leaving it our for a few days, maybe in a protected area outside, let it air out and then try it. I am sure after your doggies discover their new toy it won't smell too perfumey for long :)
Question: how much would this run my bill up if I was to run it only overnight
Answer: The kongs I have are X large and measure about 4 1/2 to 5 inches tall.
Question: I have a wood shop 16' x 16' x 8' approx 2000 sq foot, would this work to keep it warm duriing the winter
Answer: I don't know how many cups it can hold but I can get 4 to 5 small hard treats in it at one time.

Product features

Dr. Heater DR218-1500W Greenhouse Garage Workshop Infrared Heater

During the winter when outside temperatures drop below freezing, using a greenhouse heater can keep your plants from the freeze. The Dr. Infrared Heater DR218 Greenhouse Heater is a professional choice for your tender plants. This incredible heater uses a fan-forced air technology that can provide a reliable and efficient heat source to your greenhouse plants. Permanently lubricated for life, it uses a totally enclosed, thermally protected and heavy duty ball bearing motor that provides long-lasting performance with very little maintenance required. It has a precision temperature sensor with a built-in over-heat protection and adjustable thermostat control, which allows you to create the best climate for your plants. Order one today and protect your tender plants from becoming a frozen, soggy mush.

Buyplus Electric Patio Space Heater - Outdoor Portable Heaters, Super Long Cord, 3S PTC Fast Heating, Overheat Protection, 3 Modes, Small Electric Heater for Greenhouse, Indoor, Garage, Office Ceramic Fan Heater

Buyplus

Based on 116 reviews Check latest price
  • ☀【Long Cord Patio Heater】- Patio heater 120v is designed with a super long cord which is much longer than most in the market. With approx 89 inches long cord, this portable electric space heater can be used as a greenhouse heater, garage heater or indoor electric heater in workplace. Besides, with a 90°tilt rotation, our electric heaters can provide heating evenly in a wider range!
  • ☀【Portable Outdoor Heaters】- Buyplus portable space heater is combined with a small size design, convenient for you to move the portable fan heater for room to any place as you want with a built-in carrying handle. With this portable feature, you can use this space heaters for garage, kitchen, living room and so on. Pick our room heaters for you and your family, you will be surprised with its wonderful performance.
  • ☀【3 Modes Patio Heater】- Are you ready for staving off the chill in winter? Our electric heaters for home is suitable for you. Buyplus portable electric heater has 3 heat setting, fan only, low and high heat. With 1500W and 750W heat settings, this fan heater can eliminate cold spots quickly in winter. Besides, by rotating the power switch to different positions, this electric space heater can be used as a normal fan which can promote air circulation.
  • ☀【Save Energy】- Buyplus portable space heater can heat up quickly in 3 seconds and quietly in 35-45DB. Use it as supplemental heat to the main heating system - no need to crank up the thermostat for the whole house when you are out. This garage fan heater provides up to 1500W heat on the high setting, and its fan only option generates refreshing air circulation without increasing heat. No worry about winter electric bill any more!
  • ☀【PTC Overheat Protection】- Buyplus electric garage heater adopts innovative PTC technology which ensures the electric space heaters remain safe when the temperature is too high. Meanwhile, because PTC stones do not generate heat at a constant rate like resistance wires, they will cool down quickly to avoid overheating, which means its internal temperature will not consistently stay high. This garage space heater is much more safe than others.

User questions & answers

Question: Could this patio heater be used in garden
Answer: It is relatively quiet. I have it on while watching tv and doing homework. Cant even tell it there. It also gives off a good amount of heat and I like that it's off the floor, seems safer.
Question: is this water proof and can be left outside
Answer: You would need a generator or a long extension cord that reaches a power supply.
Question: Is its cord long enough? I wanna use it in garden or on patio, can anyone tell me the special length of this heated fan
Answer: No this unit should have a 2 prong plug.
Question: Assembly required
Answer: This heater is manufactured in China

Product features

Product Specifications

Garage Space Heater Electric Size:

Diameter:6.3inches

Height: 8.7inches

Thickness: 4.9inches

Cord Length: 88.6inches

Power: 1500 watts

PLEASE NOTICE:

Size for your reference, as it is hand measured, please allow 0-1 inch measurement difference.

Energy saving and Economic Choise

The space garage heater can help reduce overall heating costs. Use it as supplemental heat to the main heating system - no need to crank up the thermostat for the whole house when you are just hanging out in one room. This garage fan heater provides up to 1500 watts of heat on the high setting, and its Fan Only option generates refreshing air circulation without added heat for year-round convenience. No worry about winter electric bill any more!

Safe and Over Heat Protection

Sometimes you might forget to turn off the garage heater and keep heating all night. Don't worry about this situation.The heater will auto shut off when overheating or reach the setting temperature because of the innovative PTC technology. PTC stones do not generate heat at a constant rate like resistance wires, they will cool down quickly and the internal temperature will not consistently stay high. This garage space heater is much more safe than others.

Low Noisy and Heat Quickly

The garage space heater can heat up quickly and quietly. It has 3 heat settings: fan only, low and high heat. The 1500 watt engine can heat the atmosphere quickly and warm your body in 3 seconds without noisy. You can enjoy natural wind in Autumn, hot wind in cold Winter.

Bnoukyue Portable Heater Desk Heater Oscillating Portable Desktop Ceramic Small Space Indoor Personal Mini Heater (Black)

Bnoukyue

Based on 1 reviews Check latest price

Product description

★▼Quantity: 1x MINI heater



Specifications:

Name:MINI heater

Size: 7.4x3.5x12.6cm

Rated voltage: 220V

Rated frequency: 50HZ

Rated power: 130W

Noise: <50db

Product material: ABS

  • ★▼Ceramic Technology: The Space Heater is make of safety flame retardant materials, heating fast (only 3 seconds).
  • ★▼ Energy saving: Lower power usage only 500W for energy efficient, which is good for environment .▼greenhouse heater portable heater fan outdoor heater thermostats for home floor heater
  • ★▼Portable heater: Small size perfect for one person use on or under desk, small heaters for indoor outdoor use.
  • ★▼Safety : Advanced safety features including overheat protection providing worry-free use. ▼desk heater personal heater heater fan room heater infrared heater battery powered heater
  • ★▼Quiet heating: The noise this ceramic heater makes is lower than 50 decibels, quiet enough for most people to use in a bedroom or office while sleeping.

User questions & answers

Question: Is this battery operated
Answer: It is about 4.25 inches. Very durable and my dogs of all sizes love it! (Dogs, 8 lbs, 12 lbs, 35 lbs, and 45 lbs)

iPower Electric Heater Fan for Greenhouse, Grow Tent, Workplace, Overheat Protection, Fast Heating, Spraywater Proof IPX4, Black

Based on 202 reviews Check latest price

Product description

iPower Electric heater is made specifically for wet environments like greenhouses! It features a stainless steel housing totally enclosed fan motor and is completely waterproof (IPX4 rated). Another feature unique to this heater is that the fan runs continuously in heat mode providing optimal air circulation and heat distribution Other features include built-in dial thermostat with a -58° F to +210.2° F range, fan-only operation overheat protection and discharge safety grills and stable anti-tip over design. Comes with 7 Feet grounded power cord. Electric Supply 120V 60Hz - Air output 4500 Cubic Foot/ Hour - Adjustment range -50° C to + 99 ° C (-58°F to 210 2°F)

  • [Overheat Protection] This heater is equipped with internal heat limiting control and overheats protection circuit. Once the desired room temperature is reached, the heater will automatically be shut off.
  • [Widely Application] This powerful and portable space heater is lightweight and easy to carry, does not take up extra space. It is convenient for you to move the portable fan heater for room to any place as you want with a built-in carrying handle. With this portable feature, you can use this space heaters for garage, kitchen, living room, workshops, basements, sheds and so on. Pick the heaters for you and your family, you will be surprised with its wonderful performance.
  • [Spray Waterproof] IPX4 Waterproof ideal for use in the areas such as greenhouses, barn, grow tents.
  • [Fast Heat Up] This powerful and portable space heater can quickly heat up small spaces. No more suffering in the cold winter. High efficient and energy-saving. Adjustable Heating range from -58°F to +210.2°F (-50° C to + 99 ° C)
  • [Electric Supply] Air output 4500 Cubic Foot/ Hour Electric Supply 120V 60Hz from 25W to 1500W

User questions & answers

Question: what is the wattage for this heater
Answer: I don’t know about that. I bought them and there thin and all broke. Don’t waste your money on these ones
Question: can you use it 2 heat the air in between 2 sheets of film that covers the greenhouse
Answer: It depends on the size of the cat tower? The balls are about 2 1/2 inches all around, so they might be a little big for a cat tower?
Question: I would like to maintain a room 13'×15' in 140°farenheit for about an hour, is it possibly with this heater
Answer: They are the size of a tennis ball.
Question: What is the btu on this fan
Answer: The center is hollow with a smaller hole in the smaller end; the hole on the larger end is proportional to the diameter of the larger end. You could hang it by tying a large enough bundle of knots to prevent the cord from slipping through the small end and the other end through the center of the toy.
Question: We have this unit. It does not want to stop heating. We have tried numerous times to set the temperature, with no luck. Is there a trick to this
Answer: The "puppy" one is a little softer, easier on their teeth
Question: Can it be used on outside deck
Answer: They are small. 2.5 to 3 inches I would say. And they ARE NOT indestructible. My 4 pound and 10 pound Chihuahuas broke them into pieces.
Question: can it run on battery as well
Answer: Small size recommended for dogs 1-20 lbs, Medium size recommended for dogs 15-35 lbs Hope it helps. Have great weekend
Question: Is it Energy efficient
Answer: I bought small for a small dog. There is no stuffing in the toy, just the squeaker.A second sqeaker is included. My dog loves these. The toys have held up and sqeakers are still squeaking after several weeks of play. My dog plays,but is not overly destructive.

Product features

Convenient, Portable Design

This utility heater is designed with an oversized carrying handle to make it easier to move from room to room. The body stays cool to the touch even when on the high heat setting, so you can safely transport the heater from your garage to your bedroom or bathroom whenever you need a bit of extra heat on cold winter evenings.

Loaded with Safety Features

Built with safety in mind, this portable heater is loaded with safety features for added peace of mind.

Automatic shut-off will cut the power to the heater whenever there is a risk of overheating, while the safety tip-over switch protects against electrical shock and fire if the unit is knocked over. This heater also includes power and caution indicator lights to warn you when the heater is turned on and when there is a possible issue.

Rugged, Durable Construction

With an all-metal construction, this rugged utility heater is designed to last for years with the proper

care and maintenance. The strong, durable metal will hold up to the regular wear and tear that comes

from working in a garage or workshop, so you can enjoy a warm, comfortable setting.

Precise Temperature Control

With a built-in thermostat, you can easily control the air output to tailor the temperature of your garage or workshop to your preference. Simply turn your heater on its highest setting until you have reached optimal temperature, and then switch it to the low setting to maintain that temperature.

High Efficiency
IPX4 Waterproof
Easily Move Around

DOUP Outdoor Patio Heater 2000W PTC Ceramic Electric Fan Heater Greenhouse Heater Portable Indoor Tabletop Space Heater for Room, Garden, Garage

DOUP

Product description

Voltage: 220V 50Hz

Heating method: PTC ceramic heating

Control method: mechanical

Product power: 2000W/3000W

Temperature range: low heat/high heat

Approximate applicable area: 20-30 square meters

Product size: 24*22*13cm/28*28*13cm

Applicable occasions: indoor, garden, pavilion, garage



Package Included:

1 x Heater

  • Adjustable Temp: Stepless temperature adjustable, low/high power adjustable. With over-heat protection.
  • Reliable: The large base provides sufficient stability, and is equipped with an explosion-proof net and a tipping switch to ensure safety. No gas or other flammable fuel is required.
  • Heating Elements: Voltage 220-240V. This patio heater uses electricity instead of gas to heat patios, conservatories, garden gazebos, garages quickly and effectively.
  • High Power: The terrace heater is small in size, which can save space. The super power of 2000W/3000W can provide you with an excellent heating experience.
  • TPC Heating: This outdoor patio heater adopts TPC ceramic as heating elements, heating speed is faster, covering an area of 20-25 square meters.

Indoor Electric Space Heaters Portable Space Heater, Patio Heaters Greenhouse Heaters 600W Indoor Heaters Fan, Electric Heaters, Desktop Electric Warmer with Over Heat Tip-Over Protection for Home and

L-YIN

Product description

Our space heater can evenly heat the entire room while maintaining a constant temperature. You can adjust the temperature flexibly and efficiently heat a large space.

Product parameters:



Product Name: Indoor heater



Color classification: green



Control method: mechanical



Heating method: far infrared heating



Power: 600W



Applicable occasions: bedroom, living room, office, bathroom

Our wide range of products includes all kinds of household products: from kitchen machines to household appliances to climate control products, you will find a variety of high-quality modern life products in our store.

  • Long-term heat storage: Even after the power is turned off, the heater will retain heat for a long time in the system and evenly release the heat to the surrounding environment.
  • Material: Full body flame retardant material to prevent hot and burnt.
  • Safe design: dump the power-off function, after the machine is dumped, the power will be automatically turned off, safe and secure.
  • Complete assembly: Allows you to remove the heater from the box and operate the heater within a few minutes. Simply plug the heater into a wall outlet, select the desired heat and thermostat settings, and then enjoy the warmth with the new space heater.
  • Applicable scene: living room, bedroom, office, bathroom, children's room.

JFGUOYA Electric Patio Heater - Greenhouse Fan, Heater Portable Space Heater, Adjustable Thermostat, for Grow Tent, Office, Workplace, PTC Fast Heating, 3000W, Metal Base

JFGUOYASHOP

Product description

Features



[3s heating up] This product is equipped with ceramic PTC heating elements, with stable heating performance and rapid heating.



[Waterproof body] The body of the product is made of waterproof material, which is suitable for a wide range of places and can be used in a variety of environments.



[Cooling and heating dual purpose] Two-in-one cooling and heating, multi-block heat adjustment, natural wind/1500W/3000W, both heater and fan.



[Stepless temperature adjustment] The temperature of the heating tube can be adjusted, and the constant temperature is more comfortable.



[Overheat protection] This product is equipped with a sensitive temperature sensor with overheat protection function. When the temperature is too high, it will automatically cut off the power to prevent damage to the machine.



[Portable mobile] This heater has the characteristics of light weight and small size. It is equipped with a portable handle, which can be hung, hand-held, and can be moved at will.



[Application site] This product is a high-power heating product. It is widely used in bedrooms, living rooms, small factories, garages, shops, offices, drying rooms, farms and other places.



Specifications

Power supply: 110V, 220V~ 50Hz

Power: 40w/1500w/3000w

Product size: 270x340x370mm

Packing size: 375x295x315mm

Air volume: 420m3/h

Net weight: 5.0kg

Gross weight: 5.8kg

  • [Patio Heater for Outdoor]The electric outdoor heater adopts innovative PTC technology. Garage fan heaters only generate the heat necessary to fulfill its pre-programmed goal. As well, because PTC stones do not generate heat at a constant rate like resistance wires, they will cool down quickly to avoid overheating, which means its internal temperature will not consistently stay high. This garage space heater is much more safe than others.
  • [Portable Heater Greenhouse or Patio]Do you feel cold when working in the greenhouse or garage? I will advise you might need a portable greenhouse fan heater. This greenhouse heater is perfect for you will keep your feet and legs warm. it can be used garage or workplace. You will be surprised with its wonderful performance. The garage space heater can heat up quickly and quietly.
  • [Adjustable Heat Setting for Outdoor]Do you want a warm hug when coming home from the cold outside? Turn on this garage space heater fan, it will heat up instantly & welcome you home by a warm hug. It has 3 heat settings: fan only, low and high heat. The 3000 watt engine can heat the atmosphere quickly and warm your body in 3 seconds without noisy. You can enjoy natural wind in Autumn, hot wind in cold Winter.
  • [Energy saving for Outdoor]The space outdoor heater can help reduce overall heating costs. Use it as supplemental heat to the main heating system - no need to crank up the thermostat for the whole house when you are just hanging out in one room. This garage fan heater provides up to 3000 watts of heat on the high setting, and its Fan Only option generates refreshing air circulation without added heat for year-round convenience. No worry about winter electric bill any more!
  • [Overheat Protection]Sometimes you might forget to turn off the garage heater and keep heating all night. Don't worry about this situation.The heater will auto shut off when overheating or reach the setting temperature because of overheat protection. Any questions, please contact us and we will able to solve them for you.

Indoor Electric Space Heaters Greenhouse Heaters Space Heater Portable Oil Heater with Thermostat, Remote, Oil Filled Radiator Full Room Heater with Tip Over & Overheat Protection for Indoor Use 1800W

L-YIN

Product description

Our space heater can evenly heat the entire room while maintaining a constant temperature. You can adjust the temperature flexibly and efficiently heat a large space.

Product parameters:



Product Name: Indoor heater



Rated voltage: 220V~50HZ



Rated power: 1800W



Gear adjustment: three gear adjustment



Dumping power: support



Overheat protection: support



Power cord length: 1.35 meters



Packing size: 1100x100x620mm

Our wide range of products includes all kinds of household products: from kitchen machines to household appliances to climate control products, you will find a variety of high-quality modern life products in our store.

  • Long-term heat storage: Even after the power is turned off, the heater will retain heat for a long time in the system and evenly release the heat to the surrounding environment.
  • Security Features The power indicator light lets you know that the device is turned on, built-in security, overheat protection, and tipping safety switch (if the accidental knockdown turns off the heater).
  • Powerful performance The heater has 1800 watts of heating power, which can provide energy-saving heating for your room or office, and it needs constant heating in winter.
  • Adjustable thermostat The heater is equipped with an adjustable thermostat, so you can enjoy the most comfortable temperature according to your own needs.
  • Quiet operation Enjoy a quiet and peaceful room while keeping the space warm and comfortable without the annoying hot sounds that can interfere with your sleep, work, meditation, chat or anything that needs to be quiet.

Latest Reviews

View all