Overhead view of an air conditioning condenser unit on a concrete pad next to a house with asphalt shingle roofing and vinyl siding.

AC Maintenance in Walla Walla, WA

Air conditioners here run from July through August, so June is the time for a tune-up. Tell us about your system, and a licensed contractor who covers Walla Walla County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Overhead view of a gray outdoor AC condenser unit on a concrete pad beside a mulched garden bed and a house with vinyl siding.

Two months of hard running, then a long rest

Your air conditioner in Walla Walla County earns its keep in July and August, with summer afternoons averaging 86°F. That is a short stretch, but the system runs hard through all of it, then sits idle the rest of the year.

A unit that has been off for months does not always start clean. Refrigerant pressure settles, the outdoor coil picks up dust, and a capacitor that was already weak can fail the first week it is asked to work. A tune-up before summer catches a weak capacitor or a dirty coil while the fix is still simple, not after the heat has already found the problem for you.

2 months
July through August, your air conditioner is on duty
86°F
the average summer afternoon it cools against
2 hail events
in ten years, and hail bends the fins on outdoor coils
37 wind events
in ten years, and wind drives debris into outdoor units
Isometric line illustration of a cutaway house showing interior rooms, ceiling ductwork, an indoor air handler unit, and an outdoor condenser connected by lines along the exterior wall.
Your air conditioner works hardest from July through August.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit mounted on a concrete pad next to a blue-sided residential house at sunset.

Book your AC tune-up in June, before homes here start needing cooling in July.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.

Washington requires contractors to register with the state.

That registration puts the business on file with the Department of Labor and Industries. Nobody tested the contractor's knowledge of air conditioners to get it, and the state does not track how the work turns out. It tells you the business exists and is on record. It does not tell you the technician knows a coil from a compressor.

For maintenance on an air conditioner, the protection that matters is federal. Any technician who opens the refrigerant side of the system, to check the charge or recover refrigerant, has to hold EPA Section 608 certification. That credential exists everywhere in the country, not just in Washington, and it is the one that says the person working on your system was tested on handling refrigerant safely.

Source: Washington State Legislature

What does AC maintenance include?
A technician cleans the condenser coil, checks the refrigerant charge, and tests the capacitor and contactor in the outdoor unit. Inside, they check the evaporator coil and the condensate drain to make sure it's not clogged. They'll also check the thermostat and look over the electrical connections, since a loose connection is a common cause of a system that trips off on its own. Anyone opening the refrigerant side of the system has to hold EPA Section 608 certification, so ask whether that's part of the visit.
How often does an air conditioner need maintenance?
Once a year is standard, ideally before the weather turns warm. Around here that means having it looked at before July, since cooling season only runs through August. A yearly check catches a weak capacitor or a low refrigerant charge before it leaves you without cooling on a 86°F afternoon.
Is AC maintenance worth it?
Yes, mainly because it catches small problems while they're still small. A dirty coil or a weak capacitor makes the system work harder, and either one can lead to a breakdown at the worst time. It also matters here that this area sees damaging wind fairly often, 37 events over the past ten years, so having a technician check that the outdoor unit is secure and undamaged is worth doing before summer, not after a storm.