Terravis Energy develops the AetherLux line of electric heat pumps for year-round home heating and cooling, with its AetherLux Pro built around ZeroFrost™ technology for operation in extreme temperatures. A subsidiary of publicly listed Worksport Ltd., Terravis Energy is currently prototype-testing the Pro, which is designed to operate from -50°F to 131°F without conventional defrost cycles. Its residential units are sized for spaces ranging from about 600 to 2,600 square feet.