New Homeowner? Start With These HVAC Basics

Find and record these

• The filter location and its exact size — write the size somewhere you will find it again
• The outdoor unit's data plate, including the model and serial number
• The approximate age of the equipment, which is often encoded in the serial number
• The breakers for the air handler and the condenser, and the outdoor disconnect
• The condensate drain and where it terminates outside
• Whether you have a furnace or a heat pump — see our guide if the outdoor unit runs in winter

Questions worth answering early

• When was it last serviced, and is there any documentation from the previous owner?
• Is there any remaining manufacturer warranty, and is it transferable?
• Were permits pulled for any HVAC work done before you bought it?
• Does every room actually get comfortable, or is there a room that never does?

The inspection gap

A home inspection generally confirms the system turns on and produces cold air. It is not a diagnostic of refrigerant charge, airflow, electrical condition or remaining life. A system that passed inspection can still be near the end, which surprises people in their first summer.

A sensible first move

Book a tune-up in your first season. It establishes a baseline, catches anything the previous owner deferred, and means you find out about the condensate drain in spring rather than through a ceiling stain in August.