Warmth in Winter

The greenhouse is heated with a self-regulated system that uses the sun’s natural heat, focusing it through special insulated panels in order to heat up a central water tank that helps maintain ideal growing conditions. An insulated north-facing wall helps trap warm air, and an insulated foundation ring keeps out frost and prevents the ground from cooling the dome.

Every Growing Dome Greenhouse also comes standard with a geothermal climate control system that is installed under the soil of the raised garden beds. Its purpose is to utilize the consistent temperature of the soil, tap into the thermal mass, and have the ability to store and release that thermal energy. The fans used in these systems are solar-powered and they help circulate the air within the greenhouse as well.

These components allow the dome to heat itself about 20-25º warmer than outside temperatures in the winter. For very cold temperatures, owners usually opt for an additional heating system, such as an electric heater, a propane heating unit or even a wood-fired stove. Many of our customers have also installed Ground to Air Heat Transfer (GAHT) systems for an extra heat source.