Organized the way a home system is wired together. Find the part that's acting up and see what a call for it covers.
Lines show how the parts connect. Tap a part to jump to it.
Tells the rest of the system when to run and whether to heat or cool.
The furnace or air handler. It holds the blower that moves air through the house, the heat source, and the indoor coil.
Carries conditioned air out to each room and brings return air back to the indoor unit.
The condenser or heat pump. Through the refrigerant lines, it moves heat out of the house in summer, and with a heat pump, into it in winter.
You don't need to know. Call and describe what you're hearing or feeling.