Plants grow a lot better at the right temperature. In the summer, your Harvst greenhouse will keep your plants cool with a large, automatically opening lid to vent hot air. The twinwall polycarbonate panels also provide some shading (compared to greenhouse glass) while still letting in light.
In the winter, or for germinating seedlings earlier in the spring, warmth is provided using heater pads or heater cables which plug directly into the Harvst control unit. They are low voltage, fully waterproof, and designed to be used in a wet environment.