AC Installation in McMinnville, OR
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McMinnville summers don't ask much of an air conditioner
Summer afternoons here average just 77°F. That's mild compared to most of the country, and it means a new system won't be working hard to keep up on the hottest days.
Even so, any new central air conditioner installed has to meet the federal minimum of 13.4 SEER2. That's the baseline for efficiency now, whether the summers push a system hard or barely ask anything of it at all.
- 77°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 $10 a year.
Estimates for a typical Yamhill County home, from EIA household energy data, Oregon fuel prices and NOAA climate normals. Your home will differ.
Oregon requires HVAC contractors to hold a state license.
The Construction Contractors Board licenses the contractor, not each job, so the license is tied to who is doing the work rather than to this particular installation. Work under $1,000 does not need a licensed contractor, but installing an air conditioner runs well past that mark, so whoever does this job needs to hold that license.
The license covers who is allowed to do the work. It does not inspect the installation itself. In most cities and counties, a job like this needs a permit from the local building office and an inspection once the work is done, and that inspection is what checks the refrigerant lines and electrical connections rather than the contractor's standing.
Source: Oregon Legislative Assembly
- What size air conditioner does my house need?
- There's no single number that works for every house. Sizing depends on the square footage, how many windows you have and where they face, your ceiling height, and how much insulation is in the attic and walls. A contractor works this out with a load calculation, not a guess based on square footage alone. Too big a unit cools the air fast but doesn't run long enough to pull the humidity out, and too small a one runs constantly without keeping up on the hottest afternoons.
- Should I replace the whole system or just the outdoor unit?
- If your indoor coil and outdoor unit weren't matched and installed together, replacing just the outdoor unit usually isn't a good idea. The compressor and coil are designed to work as a pair, and mismatched equipment runs less efficiently and can shorten the life of the new unit. Age matters too. If the indoor coil is old, it may be near the end of its own life anyway. A contractor can look at both pieces and tell you whether the coil is still in good shape or whether it makes more sense to replace the system as a set.
- Do HVAC contractors in McMinnville need a state license to work on my home?
- Yes. Oregon requires HVAC contractors to hold a state license, issued through the Construction Contractors Board. That license covers the contractor as a business, not each individual job. An air conditioner installation isn't the kind of small job Oregon exempts from that requirement, so it needs a licensed contractor. Most cities and counties also require a permit and inspection for this kind of installation, so check with your local building office as well.