AC Installation in Sierra Vista, AZ
A new air conditioner in Sierra Vista will run from May through September every year. Tell us about the house, and a licensed contractor who covers Cochise County will get in touch.
Tell us about the job
It takes about a minute.
Five months of Sierra Vista heat, every year
From May through September your air conditioner runs against afternoons that average 92°F. That is five months of steady work, not just a few hot weeks.
Cochise County also brings hail and wind. Ten years of records show 36 hail events and 104 damaging wind events, with hail up to 2 inches. An outdoor unit sits through all of that, so how it is installed and protected matters as much as the equipment itself. Any new central air conditioner installed today has to meet 14.3 SEER2, the federal efficiency minimum that took effect in 2023.
- 5 months
- May through September, your air conditioner is on duty
- 92°F
- the average summer afternoon it cools against
- 36 hail events
- in ten years, and hail bends the fins on outdoor coils
- 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 $20 a year.
Estimates for a typical Cochise County home, from EIA household energy data, Arizona fuel prices and NOAA climate normals. Your home will differ.
Arizona requires HVAC contractors to hold a state license.
The Registrar of Contractors tests the contractor and keeps a record of who holds that license. It covers the contractor, not this specific job, so the same license applies to whatever installation or repair work they take on across the state.
For this job, that license is what stands behind the work. In most cities and counties here, installing an air conditioner also needs a permit from the local building office, with an inspection once the work is done, so the license is not the only check on the job.
Sources: Arizona State Legislature · Arizona Registrar of Contractors
- What size air conditioner does my house need?
- The right size depends on your home's square footage, how many windows it has, the insulation, and which way the house faces, so there's no number that fits every home. A contractor works this out with a load calculation, not a chart based on square footage alone. Going too big is as much a problem as going too small. An oversized unit cools the air fast but shuts off before it pulls the humidity out of the room, so a contractor here will size it to your house, not just to the Sierra Vista heat.
- Should I replace the whole system or just the outdoor unit?
- In most cases you replace both the outdoor unit and the indoor coil together. They're matched to work at a specific efficiency, and pairing a new outdoor unit with an old coil usually means you lose the efficiency gain you're paying for. It can also void the manufacturer's warranty on the new equipment. A contractor can look at the age and condition of your indoor coil and tell you whether it's a matched replacement or a full system swap.
- Do HVAC contractors in Sierra Vista need a state license to work on my home?
- Yes. Arizona requires HVAC contractors to hold a state license, issued by the Registrar of Contractors. Ask to see it before work starts on your home.