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How Do You Heat A Greenhouse In The Winter?

Do You Heat A Greenhouse In The Winter

There are a few ways to heat your greenhouse. These include Passive solar heating, Propane heaters, germination mats, and Double-pane windows. In addition, you can install solar fans. Solar fans run off the energy they collect during the day. They also provide additional heat to your greenhouse.

Passive solar heating

To maximize your greenhouse’s passive solar heating potential, the orientation of the greenhouse is critical. Ideally, the greenhouse will face the south and have a glazed wall facing the south. It also needs to be protected from the wind. This is sometimes not possible, though, due to trees or other large obstacles in the south that block the sun’s rays. In these cases, the best orientation is an angle of about 15 or 20 degrees from true south. This will still allow the greenhouse to receive up to 90% of the sun’s energy.

Passive solar heating for greenhouses in the cold season can be used to heat the greenhouse without requiring any electrical power. This method utilizes thermal mass to trap heat during the day and release it slowly during the winter. These materials are usually painted black to absorb the sun’s rays and keep the greenhouse warm.

Propane heaters

Propane heaters provide a reliable source of energy for greenhouses. Propane is widely available and inexpensive, and its use is popular in commercial greenhouses. In addition to providing heat, propane heaters release C02 into the air, a nutrient that plants need for proper growth.

Propane heaters for greenhouses are available in two different types – installed heaters and portable heaters. Installed heaters are permanently located near the greenhouse. Installed heaters should be installed near the greenhouse’s center, and should rise slightly from ground level to avoid cold spots. Propane heaters should be installed by a propane company service team, who will set up the tank and any required piping, and test them for leaks.

Germination mats

Germination mats in a greenhouse are an excellent way to promote healthy seedling growth. They work by providing the optimal soil temperature conditions for seedlings to germinate. They are also helpful in promoting uniform germination. Seeds must remain moist and protected from direct sunlight.

Germination mats can be expensive and many people would prefer to use cheaper heating methods. Some people place seed trays on a refrigerator, television, or other warm place in their home. Others choose to use a thermostat or a 40-watt incandescent bulb.

Double-pane windows

In the winter, double-pane windows are an effective way to heat a greenhouse. This method prevents hot air from escaping through the window and helps the greenhouse stay warm. It also prevents cold spots from forming inside the greenhouse. To make the greenhouse less cold, you can use bubble wrap as insulation for the clear glass walls. The air inside the bubbles provides excellent insulation.

Double-pane windows are also effective at reflecting heat from the outside to the greenhouse. These windows allow the warmth of the sun to enter during the day, while preventing heat loss due to cold temperatures outside. However, double-pane greenhouse windows can be costly. If you cannot afford these windows, you can always make your own greenhouse windows by repurposing clear plastic and using caulk to seal the gaps.

Dust bin or oil drum filled with water

There are several ways to heat a greenhouse in the winter. A greenhouse can absorb the heat from the house. It can also be heated by gas or electric. However, you must be sure to retain the heat you generate. One of the best ways to retain heat is by using water barrels. These barrels can be painted black to absorb the warmth from the sun. The barrels then release the heat into the air of the greenhouse when temperatures drop.

Another way to heat a greenhouse is to build a compost pile. Compost piles generate heat as they decompose. This heat can be used to raise the temperature of the greenhouse air. The amount of heat produced by a compost pile depends on the size and moisture of the pile. The compost pile can also be made of other objects that have thermal mass, such as wood.


Insulating a greenhouse in the winter can be achieved in a number of ways. You can build a thermal screen with reflective silver foil or bubble wrap, or you can install a greenhouse blanket. Bubble wrap is the best option, as it is highly UV-resistant. This insulation can also reduce the greenhouse’s greenhouse gas emissions.

Another inexpensive way to insulate your greenhouse in the winter is to use bubble wrap. It can be a good insulator, especially if placed on the north side of the greenhouse. Alternatively, you can place it on the inside roof of the greenhouse.