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How Do Greenhouses Stay Warm In Winter?

Do Greenhouses Stay Warm In Winter

The winter months can be brutal for greenhouses. The cold and chilly weather can quickly deplete any trapped heat in the greenhouse, and the heat can escape very quickly. For this reason, greenhouses should be insulated well to keep out cold air and maintain a comfortable temperature. However, in some southern climates where the sun shines very brightly, you may be able to rely on the sun’s heat to keep the greenhouse warm.


There are many ways to heat your greenhouse in winter. One option is to use a gas boiler. You can install this type of boiler inside or outside your greenhouse. You can use more than one boiler if you have several greenhouse structures. The boiler should be mounted in a way that prevents cold air from entering the greenhouse. You should also ensure that the pipes are insulated.


Insulation for greenhouses is important to keep your plants warm and dry, especially during the winter months. There are many different types of insulation available. Some of the most popular are fiberglass and foam. Both contain tiny spaces and bubbles, which trap heat and prevent it from moving in and out. You can also use heavy-duty plastic. Plastic is easy to clean and is also very effective at insulating a greenhouse. Whenever possible, choose materials that have Energy Star approval.


Proper ventilation helps greenhouses stay warm in winter by mixing warm air from the outside with cold air from inside. Generally, two to three air changes per hour are sufficient. Ventilation rates can be increased as the temperature in the greenhouse increases, but they should still remain low in order to minimize condensation.


One of the main reasons greenhouses are used for growing plants is to keep them protected from harsh temperatures outside. They do this by containing the heat that the sun generates and trapping it inside. But greenhouses can lose this heat very quickly once temperatures outside begin to fall. To avoid this problem, you should consider adding some form of insulation to your greenhouse.

Wood stoves

Wood stoves are a great way to heat greenhouses and small horticultural spaces. However, the downside of using a wood burner in a greenhouse is that they can be expensive to run. Additionally, a wood stove requires someone to place the wood in it. This heating option can be used in mild climates or in combination with other heating methods. As with any other type of heating, proper ventilation and installation is important to avoid fire hazards.

Electric heaters

Electric heaters are a great way to keep a greenhouse warm in winter, especially if you’re growing plants in a cold climate. These heaters can provide the extra warmth your plants need without burning your plants or wasting energy. Choosing the right size of heater is essential, though. Oversized or undersized heaters will bake your plants and waste energy. You can also choose solar greenhouse heaters or run conventional electric heaters off of a battery pack.

Thermal mass

Thermal mass is the concept of adding objects to a greenhouse to absorb heat and then release it when it is colder. This type of material raises the temperature of the greenhouse in the winter by several degrees and is an excellent way to protect your plants from freezing. Thermal mass is best used in greenhouses that have a large heat capacity.


There are many ways to adjust the temperature inside your greenhouse to ensure your plants grow year-round. One of these is by adjusting the insulation. The optimal temperature for a greenhouse is 70 to 80 degrees Fahrenheit. In addition, you should consider adding 220-volt heaters to supplement the heat produced by your greenhouse during the winter. Another way is to use ventilating fans to keep the greenhouse cool during the summer.