Can You Use a Space Heater in a Greenhouse?

Using a space heater in a greenhouse can be an effective way to maintain the desired temperature for your plants, but it requires careful consideration to ensure safety and efficiency. This comprehensive guide will provide you with the technical specifications, DIY considerations, and expert recommendations to help you make an informed decision on using a space heater in your greenhouse.

Technical Specifications for Using a Space Heater in a Greenhouse

Types of Electric Space Heaters

  • Convective Heaters: These heaters warm the air in the greenhouse by transferring heat from the heating element to the surrounding air. They are well-suited for heating larger greenhouse spaces.
  • Radiant Heaters: These heaters directly heat objects and surfaces, rather than the air. They are more energy-efficient than convective heaters, making them a good choice for smaller greenhouses or targeted heating of specific areas.

Energy Efficiency Considerations

  • Radiant heaters are typically more energy-efficient than convective heaters, as they directly heat objects and surfaces rather than warming the entire air volume.
  • A 1200-watt electric space heater can be sufficient for heating a small greenhouse, but the size of the heater will depend on the size of the greenhouse and the desired temperature.
  • Using multiple heaters in a larger greenhouse can result in higher electricity bills, so it’s important to carefully consider the size and number of heaters needed.

Safety Precautions

  • Electric space heaters can pose a fire risk if not used properly, so it’s crucial to place them in a safe location, away from flammable materials and never in bathrooms.
  • Ensure the greenhouse is well-ventilated, especially when using non-electric heating options like combustion-based systems, to prevent the buildup of harmful gases like carbon monoxide.

DIY Considerations for Using a Space Heater in a Greenhouse

can you use a space heater in a greenhouse

Placement and Positioning

  • Position the space heater in a safe, stable location, away from any furniture, appliances, or other potential fire hazards.
  • If using a convective heater, make sure the doors and windows are closed to prevent heat loss and maximize the heater’s efficiency.
  • For radiant heaters, consider placing them near specific plants or areas that require targeted heating.

Temperature Control

  • Adjust the temperature of the space heater to match the desired temperature in the greenhouse, using the knob or controls on the heater.
  • Consider installing a thermostat to automatically regulate the temperature and maintain the optimal growing conditions for your plants.

Timing and Automation

  • Use a timer to automatically turn the space heater on and off, ensuring it’s not running unnecessarily when the greenhouse is unoccupied.
  • Integrate the space heater with a smart home system or greenhouse controller to automate temperature management and optimize energy usage.

Non-Electric Heating Options

  • Barrels of water painted black can absorb and retain heat during the day, releasing it at night to help maintain greenhouse temperatures.
  • Compost piles placed inside the greenhouse can generate heat through the decomposition process, providing a natural heating source.
  • Solar water heaters and the presence of animals in the greenhouse can also contribute to the overall heating of the space.

Remember to monitor the temperature and humidity levels in the greenhouse closely when using any heating method, and ensure proper ventilation to maintain a healthy growing environment for your plants.

YouTube Video: Using a Space Heater in a Greenhouse
NewAir Blog: Space Heaters to Warm and Protect Your Greenhouse Plants
Reddit Discussion: Is it Safe to Use an Electric Heater in a Mini Greenhouse?
Growing Fruit Forum: Non-Electric Ways to Heat a Small Greenhouse Thread: Greenhouse Heaters