Energy Audits, Home Performance Contracting, Green Building Certification

HVAC

Heat Pumps

Long used for cooling in warm climates, heat pumps are now one of the fastest growing technologies for ultra-efficient heating in cold climates. Rather than generate heat from combustion or electric resistance, heat pumps extract heat from outside air or the ground and deliver it indoors as needed. This process is a more cost-effective way to heat than most conventional systems. In the summer, heat pumps can reverse and work as air conditioners, cooling indoors and rejecting heat outside.

 

Ventilation

Heat Recovery Ventilation (HRV) is a ventilation system which uses a heat-exchanger to pre-heat outside air using heat from the ventilated indoor air in cold months, or pre-cool it in warm months. HRV provides fresh air and improved climate control, while also saving energy by reducing heating (and cooling) requirements.

 
Energy Recovery Ventilators (ERVs) are closely related, however ERVs also transfer the humidity level of the exhaust air to the intake air.
 
Examples:
Venmar

 

 

Dehumidification

Examples:
Santa Fe