HVAC Specifications

Specifying ENERGY STAR® qualified equipment will further increase the energy-efficiency of your HVAC by roughly 20%. In properly air sealed homes (where the natural ACH is less than 0.35) it is also important to install controlled mechanical ventilation.

Steps

6. Specify energy-efficient equipment that meets or exceeds ENERGY STAR qualifications. ENERGY STAR qualified central air conditioners are at least 25% more efficient than other models, and ENERGY STAR qualified heat pumps are 20% more efficient than their counterparts.

7. Provide controlled mechanical ventilation using energy-efficient methods. These can range from adding a simple and inexpensive exhaust-only fan to installing more expensive and efficient heat recovery ventilation equipment, which transfers a significant amount of energy from the exhaust air to the supply air. Examine a case study that compares three controlled ventilation systems in otherwise identical homes. Read the final report (PDF Format).

8. Install an ENERGY STAR qualified programmable thermostat. Programmable thermostats automatically adjust the temperature of your home when you are asleep or away, which can save you roughly $100 per year.

Content updated on 8/2/2006