AC Installation in Everett, WA
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Everett summers don't ask much of an air conditioner
Summer afternoons here average 69°F. That's mild enough that plenty of homes get by without cooling at all, and the ones that install it aren't running it hard or often.
A new central air conditioner installed here still has to meet the federal efficiency minimum of 13.4 SEER2, the same as anywhere else. But the mild summers mean the unit's job is a light one most years.
- 69°F
- the average summer afternoon it cools against
- 13.4 SEER2
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Going above the federal minimum saves little here, about $0 a year.
Estimates for a typical Snohomish County home, from EIA household energy data, Washington fuel prices and NOAA climate normals. Your home will differ.
Washington requires contractors to register with the state.
That registration puts the business on file with the Department of Labor and Industries. There is no trade exam behind it, so the number tells you the contractor exists and is on record, not that they were tested on how to size or install an air conditioner.
The check on this job comes from your local building office instead. In most cities and counties, installing an air conditioner needs a permit and an inspection once the work is done. That inspection is the part of this job that someone besides the contractor actually looks at.
Source: Washington State Legislature
- What size air conditioner does my house need?
- A contractor works this out with a load calculation, not by square footage alone. That calculation looks at your insulation, your windows, your duct layout, and how much shade the house gets. An oversized unit cools the air fast but shuts off before it pulls the moisture out, so the house feels clammy. Given how mild summers run here, with afternoons only averaging 69°F, a lot of Everett homes need less capacity than a size chart from a hotter region would suggest.
- Should I replace the whole system or just the outdoor unit?
- If your indoor coil and outdoor unit were matched when installed, replacing just the outdoor unit can throw that match off and hurt efficiency or even void the warranty on the new part. A contractor can check whether your existing coil and airflow will work with a new condenser. The age and condition of the indoor coil matters too, since a coil near the end of its life may fail soon after you've paid for a new outdoor unit. Get the whole system looked at before deciding to replace only part of it.
- Do HVAC contractors in Everett need a state license to work on my home?
- Washington requires contractors to register with the Department of Labor and Industries, but that's a business registration, not a trade license with an exam. So ask about registration, not a license, when you're checking someone out. Separately, installing a new air conditioner in Everett needs a permit from the local building office, and the work gets inspected once it's done. That inspection is what actually confirms the installation was done right.