A real tune-up measures and restores the system to spec: coil cleaning, refrigerant charge verification, electrical testing under load, airflow measurement, safety checks, and drain service. If a 'tune-up' is done in fifteen minutes without instruments, it was an inspection at best.
- Cooling visits center on coils, refrigerant charge, capacitors, and condensate drains.
- Heating visits center on electric air-handler inspection, heat-strip amperage, sequencers, relays, defrost operation, and safety controls.
- Both verify airflow — the number one casualty of Valley dust.
- Twice a year is the local cadence: cooling in spring, heating in fall.
The cooling-season visit
The spring tune-up cleans the outdoor condenser coil (the Valley-dust magnet), checks the indoor coil, verifies refrigerant charge against manufacturer spec, tests capacitors and contactors under load, measures temperature split across the coil, flushes the condensate drain, and confirms airflow. Charge verification matters more than people think: a system even modestly low on refrigerant cools worse, costs more, and slowly cooks its compressor.
The heating-season visit
The fall visit inspects the electric air handler, verifies heat-strip amperage, tests sequencers/relays, exercises safety limits, checks the blower, and confirms airflow. For heat pumps, fall service adds defrost-cycle testing and reversing-valve operation — the two winter failure points.
Why the Valley cadence is twice a year
The recommendation isn't arbitrary: this climate runs equipment hard in both directions, and the dust load between visits is real. Twice-a-year service is also what maintenance plans productize — members get both seasonal visits, priority scheduling in the weeks when everyone's system fails at once, and member repair pricing. Manufacturers also generally require documented routine maintenance to honor warranty claims, which makes the paper trail itself worth something.
Key terms
The vocabulary you'll hear on estimates and service calls — defined in plain language in our glossary.
Where it goes wrong
The fifteen-minute 'tune-up'
A filter swap, a glance, and a sticker is not maintenance. The tell is instruments: no gauges, no meter, no thermometer, no measurements written down — no tune-up. Ask what was measured and what the readings were; a professional visit produces numbers.
Skipping the fall visit on a heat pump
Heat pumps work year-round, so they get no off-season rest — and their winter-specific failure modes (defrost, reversing valve) are exactly what the fall visit tests. Cooling-only maintenance on a heat pump is half a program.
How we build this guidance
- Written from real service and install work across the Wenatchee Valley — the orchard-dust, hydro-rate, dual-peak-climate conditions in this guide are the ones our techs work in daily.
- Rebate figures reflect published utility program terms at the date below and are re-verified on every estimate — programs change annually.
- No invented pricing: dollar figures appear only where a program publishes them.
Last updated: 2026-07-03 · Central Washington Heating and Air, licensed & insured (LIC# CENTRWH742JN)
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