The new Cello Air™ Damper product solves the problem of hot and cold spots in your home through intelligent air balancing and room-by-room temperature control. The Cello Air™ Damper works independently of your home thermostat. The Cello Air™ Damper installs under existing vent registers. The Cello Air™ Damper is battery powered with an expected life cycle of up to 6 years. Eliminating hot and cold spots translate to reduced energy bills.