Every HVAC company sells a tune-up, and the word covers everything from a rigorous, instrumented inspection to a technician glancing at the unit while the invoice prints. The difference matters: the failures that strand homeowners in heat waves and cold snaps are almost all small, measurable, and findable in advance — if somebody actually measures. This is the checklist behind our HVAC maintenance visits, published so you can hold us — and anyone else — to it.
The cooling-side checklist
Coils, cleaned and inspected. The outdoor coil sheds your home's heat; a coil matted with dirt and vegetation can't. The indoor evaporator coil gets checked for buildup that strangles airflow. Refrigerant charge, verified. Not eyeballed — measured against the manufacturer's specification, because a few ounces off shows up as lost capacity and a straining compressor. Electrical, tested under load. Capacitors drift out of spec before they fail; contactors pit; connections loosen. Each is a cheap catch now and a no-cool call later. Condensate, flushed. The drain that carries away summer humidity grows algae all season; a blocked line backs water into ceilings and shuts systems down via their safety switches. Airflow and blower. The blower wheel (pictured above — that wheel moves every breath of conditioned air in your home) is inspected, the filter checked, and temperature split across the coil measured. Thermostat, confirmed. Calibration and operation verified, because the best system in the world still takes its orders from the wall.
The heating-side checklist
Everything above that applies, plus the safety pass that makes heating maintenance a different discipline. Heat exchanger, inspected for cracks and corrosion — the carbon-monoxide component (our furnace repair article on repair-or-replace explains why this finding outranks all others). Ignition and flame sensing, tested through real start cycles. Venting, checked for blockage and proper draft. Safeties, proven — limit switches and pressure switches tested, not assumed. On heat pumps: the defrost cycle observed and the auxiliary heat strips energized and confirmed, in fall, while there's still time to fix them.
The part most tune-ups skip: the report
A checklist without a record is a memory exercise. Every maintenance visit should end with a written condition report: what was measured, what the readings were, what was cleaned or adjusted, and — most valuable of all — what is wearing toward a future repair. That watch-list is the real product. It converts next January's emergency into a planned repair on a mild October afternoon, at a planned price.
What you do between visits
Your share of the checklist is short: replace filters on the rhythm your home needs (pets and renovation dust shorten it), keep the outdoor unit clear of vegetation and stored items, keep vents and returns unblocked by furniture, and pay attention to changes — new noises, longer cycles, rooms drifting off temperature. Systems rarely fail silently; they fail in a language of small changes first.
When to schedule
Cooling in spring, before the first heat wave books everyone solid. Heating in fall, before the first cold night does the same. Twice a year, once per mode — heat pumps most of all, since they work both shifts. Book a visit with Eagle Heating and Cooling at (855) 640-0404; the line answers 24/7, and the assessment of your system's condition is part of the deal from the first visit.
Dealing with this at your house?
Book the free assessment — we'll diagnose your system with instruments and quote the fix in writing.