Air recirculation in ventilation systems is essentially the mixing of a certain amount of exhaust air into the supply air. This process provides a reduction in energy consumption when heating fresh ...

Heat recovery and ventilation systems are integral to contemporary approaches in reducing building energy consumption and enhancing indoor air quality. These systems operate by capturing waste heat ...

Heat recovery VRF systems are a proven solution that can deliver significant energy savings and improved occupant comfort ...

Dear Jim: I have an energy-efficient house that is fairly airtight. I installed new windows and doors. Now the indoor air does not seem as fresh as it used to and odors linger. How can I get more ...

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As the mercury rises, there is nothing better than retreating into a cool, air-conditioned room — but between toxic coolant gases and energy use, what does a cooling system cost the environment?