HVAC Repair in Troy, MI
Homes here need heat from October through May and cooling from June through August. If your system quits, tell us what it's doing and a licensed contractor who covers Oakland County will get in touch.
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Eleven months of work, most homes on gas
Your furnace in Troy runs from October through May, and the air conditioner takes over for June through August. That leaves one month of rest a year for the system that keeps your house livable. Most homes here heat with gas, so the furnace is doing the heavy lifting on the nights that average 19°F. That kind of cold means long burner cycles, and every cycle puts wear on the igniter and the ignition control. When one of those fails, the furnace won't light at all, and you find out at the worst time, on the coldest night.
Oakland County also sees real storms, with 16 winter storms and 164 damaging wind events over the past ten years. More than a third of Michigan households lost power for at least a day in 2024. A furnace with no power won't run no matter what shape it's in, and when the power comes back, most systems restart on their own. If yours doesn't, that's a sign the problem is in the system, not just the outage.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 19°F
- the average winter night it heats against
- 80°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
A new furnace and air conditioner would cut about $160 a year off heating and cooling for a typical Oakland County home.
Estimates for a typical Oakland County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Michigan fuel prices and NOAA climate normals. Your home will differ.
Repair makes sense when one part has failed.
Replacement makes sense when the furnace's heat exchanger is cracked, the air conditioner's compressor has failed, or repairs keep coming.
Michigan requires HVAC contractors to hold a state license.
Michigan licenses HVAC contractors through the Board of Mechanical Rules. That license belongs to the contractor, not to any single job, so the same license that qualifies someone to install a furnace also qualifies them to repair one.
For a repair on your heating and cooling system, that state license is what stands behind the person working on it. Michigan does not license the job itself, only the contractor doing it, so the license is the record to look at, not something issued fresh for this particular repair.
Sources: Michigan Legislature · Michigan Department of Licensing and Regulatory Affairs
- Why is my heat not working?
- Most often it is the igniter, a flame sensor that needs cleaning, or a thermostat that lost its setting. If your furnace runs on gas, check that the power switch on the furnace and the gas valve are both on. Winter nights in Troy average 19°F, so a furnace that won't fire is worth calling in fast rather than waiting to see if it starts on its own.
- Why is my system running but not cooling the house?
- Check the air filter first. A clogged filter chokes off airflow across the indoor coil, and when that happens the coil can ice up so the system blows air that never gets cold. If the filter is clean, look at the outdoor unit. Leaves, grass clippings or anything piled against it will block the airflow it needs to release heat, and clearing that space often solves it. If both of those check out and the air still isn't cold, the system likely needs a contractor to check the refrigerant charge.
- What can I check before calling for HVAC repair?
- Start with the thermostat. Make sure it's set to heat or cool as needed, the batteries are good, and the setting is a few degrees past room temperature. Next check the air filter and replace it if it's gray or clogged, since restricted airflow causes problems in both a furnace and an air conditioner. Then check your breaker panel for a tripped breaker, and if the outdoor unit is a heat pump or AC, make sure nothing is blocking it. If it still isn't working after that, a licensed contractor will need to diagnose it further.