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How Do You Heat A Greenhouse In The Winter?

Do You Heat A Greenhouse In The Winter

There are many ways to heat your greenhouse. You can use electric heaters, water barrels, passive solar heating, or double-pane windows. Regardless of what method you choose, here are some tips to keep your greenhouse warm during the winter. You can also try to open the vents on a regular basis to let fresh air in.

Passive solar heating

Passive solar greenhouses use solar energy to heat and cool the greenhouse, instead of using electricity. These types of greenhouses are insulated to keep out cold air and minimize heat loss on north-facing surfaces. In addition, passive solar greenhouses are typically built with non-transparent building materials. The interior of these greenhouses is usually warmer than the outside temperature during the winter months, which means they will save on heating bills.

The best passive solar greenhouses have dark-colored water barrels to absorb the maximum amount of light and heat. These barrels should be painted or covered in a dark-colored material. In addition to water barrels, other materials such as bricks or cob can also be used as heat sinks.

Electric heaters

Electric heaters for greenhouses in the winter can make the temperature inside your greenhouse much more comfortable during the winter months. They work without a separate controller and don’t make the greenhouse too hot or too cold. They’re also very quiet. They’re rated at 50 decibels, so you won’t have to worry about hearing them in the middle of the night. They also come with a one-year warranty and a 90-day money-back guarantee. They have a very short cable, about 4.9 feet, which makes them great for tight places without the hassle of an extension cord.

Electric heaters can provide heat for large areas in your greenhouse, while thermostatically controlled heaters are designed to work only when the temperature in the greenhouse drops below a certain point. Some models are also equipped with a thermometer to measure the temperature inside the greenhouse. This feature can help maintain a steady climate and save on fuel costs.

Water barrels

Water barrels can help you heat your greenhouse during the winter. The barrels store heat and release it when the greenhouse temperature drops. For example, if the greenhouse is at 82 degrees at 3 pm, and drops to 70 degrees at sunrise the next day, water barrels prevent four degrees of heat loss per hour.

A water barrel is a large, flat container that can soak up heat from the sun and hold it until nighttime. The thermal energy in the barrel is released into the greenhouse at night and helps lower greenhouse heat bills. These barrels can be made of plastic or metal and can be painted black.

Double-pane windows

The number of panes in a window determines the amount of heat it can transmit. Single-pane glass is fine for a summer greenhouse, but a greenhouse that stays open throughout the year requires high-performance windows to prevent heat loss. Choose a double-pane window with low-E coating, or an argon-filled window. A double-pane window with low-E glass will maintain a surface temperature of seven degrees during the winter months, while a single uncoated pane will keep temperatures at minus eight degrees.

Double-pane windows can help increase greenhouse heating efficiency. These windows let in sunlight while protecting the crops from the elements. However, make sure you check for cracks in the glass and fill them with putty. Double-pane windows have two layers of glass, which reduces heat loss. You can also use multi-wall polycarbonate windows, which are very inexpensive and diffuse sunlight evenly.


You may need to insulate a greenhouse in the winter if you plan on keeping tender plants. It is important to know what the best material is for this job. The most effective material for greenhouse insulation is bubble plastic. This material has large bubbles that allow more light to get in but are still good at retaining heat. It works similarly to double glazing.

You can purchase bubble wrap and apply it to the greenhouse walls and glazing bars. Next, secure it to the frame with nails, drawing pins or wire. Once fixed, spread the bubble wrap down the glazing bars. Then, cut the bubble wrap along the glazing bars to allow for opening.