: Usually a furnace (powered by gas, oil, or electricity) or a heat pump.
: An air conditioner or a heat pump operating in cooling mode. hvac buying guide
Higher efficiency equipment costs more upfront but lowers your monthly utility bills. When comparing models, look for these standard industry metrics: Cooling Efficiency (SEER/SEER2) : Usually a furnace (powered by gas, oil,
: The indoor component that blows conditioned air through your home. hvac buying guide