AC Installation in Troy, MI
A new air conditioner in Troy will run from June through August every year. Tell us about the house, and a licensed contractor who covers Oakland County will get in touch.
Tell us about the job
It takes about a minute.
Three months of real heat, then it stops
Troy summers run June through August, with afternoons averaging 80°F. That is the stretch your air conditioner has to earn its keep, then sit idle the rest of the year.
A new system installed since 2023 has to meet 13.4 SEER2, the federal minimum. Whatever gets put in should be sized to handle those summer afternoons without running longer than it needs to.
- 3 months
- June through August, your air conditioner is on duty
- 80°F
- the average summer afternoon it cools against
- 25 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
A higher-efficiency unit would save about $30 a year to run in Oakland County compared with a new unit at the federal minimum.
Estimates for a typical Oakland County home, from EIA household energy data, Michigan fuel prices and NOAA climate normals. Your home will differ.
Michigan requires HVAC contractors to hold a state license.
The state tests the contractor and keeps a record of that license, but it licenses the business, not the individual job. So the license tells you this contractor was tested and is on file with the Board of Mechanical Rules, not that this specific installation was checked.
That check comes from the local building office instead. In most cities and counties in Oakland County, putting in a new air conditioner needs a permit, and the work gets inspected once it's done. That inspection is what confirms this particular job was done right, separate from whatever the state already knows about the contractor.
Sources: Michigan Legislature · Michigan Department of Licensing and Regulatory Affairs
- What size air conditioner does my house need?
- The right size comes from a load calculation, not the square footage of your house. A contractor measures your windows, insulation, ceiling height, and how much shade your house gets, then runs those numbers to find the tonnage you need. An oversized unit cools the air fast but shuts off before it pulls the humidity out, so the house feels clammy even at the right temperature. Since your summers here run about three months with afternoons near 80°F, undersizing shows up quickly too, since the unit runs constantly and still can't keep up on the hotter days.
- Should I replace the whole system or just the outdoor unit?
- If your indoor coil and outdoor unit are different ages or different efficiency levels, replacing just the outdoor unit usually causes problems. The two are matched at the factory to work together, and pairing an old coil with a new condenser can mean poor performance or a mismatch that voids the warranty. A contractor can check the age and condition of both pieces and tell you whether they still work as a matched set. If the indoor coil is old or already showing wear, replacing both at once is usually the more reliable path.
- Do HVAC contractors in Troy need a state license to work on my home?
- Yes. Michigan requires HVAC contractors to hold a state license, issued by the Board of Mechanical Rules. Ask to see the license before work starts, and confirm the name on it matches who is actually doing the job.