Here's an energy-efficient way to cool your home; a whole-house ventilator from Tamarack Technologies.

Tamarack’s HV-1600 uses efficient, two-speed fans to exhaust hot air into your attic and then outdoors. It can change all the air in the average home in a matter of minutes. It also has industry-exclusive, automatic, motorized dual doors. When the fans shut off, they seal, providing R-38 insulation.

Also included is a radio-frequency remote control that works from anywhere inside most houses. This energy-efficient, whole-house ventilator is made in the USA by Tamarack Technologies of Buzzard’s Bay. Item #631, it’s a $900 value.