specialized contractor whose core business is to install and maintain
heating, ventilation, and air-conditioning equipment. HVAC contractors typically offer at least some
energy-efficient equipment, because HVAC equipment is the largest energy user in a residential setting.
HVAC equipment accounts for 54 percent of total residential site electricity use.
Provide specialized services, such as:
Installing heating and cooling equipment, such as central air conditioning units, furnaces, and hot
water heaters
Equipment maintenance and repairs
Duct cleaning
Plumbing and electrical work associated with cooling and heating equipment
Energy efficiency audits and retrofits, including thermostat installation