HVAC Installation in Troy, MI
A new system here will heat from October through May and cool 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.
Troy asks a lot of a heating and cooling system
Your furnace has to cover October through May here, eight months of the year. Winter nights average 19°F, cold enough that the burner is cycling on and off most of the night to hold the house steady. Come summer the air conditioner has a shorter job, June through August, with afternoons averaging 80°F.
That's 11 months where one system or the other is running. Most homes in Troy heat with gas, and a new furnace has to meet the federal minimum efficiency rating regardless of what it replaces. Power matters too. Across Michigan, a third of households lost power for 24 hours or more in 2024, and the region has logged 16 winter storms and 164 damaging wind events over the past ten years. A new system has to hold up through the storm that knocks the power out, not just the ordinary cold night.
- 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
Michigan requires HVAC contractors to hold a state license.
The license comes from the Board of Mechanical Rules, and it belongs to the contractor, not to any single job. It covers the contractor as a whole, not this particular installation on its own.
For a heating and cooling system going in at your house, the permit and inspection are what cover the job itself. In most cities and counties here, this kind of installation needs a permit before the work starts and an inspection once it's done. That inspection is what checks the actual work, the gas connections, the refrigerant lines, against code, separate from whatever the state license already covers.
Sources: Michigan Legislature · Michigan Department of Licensing and Regulatory Affairs
- When should I replace my HVAC system?
- Replace it when repairs keep piling up, when parts are getting hard to find, or when a breakdown happens on one of the cold nights here and the repair bill starts to rival a new unit. Your furnace is doing real work for eight months of the year here, October through May, with winter nights averaging 19°F, so a system nearing the end of its life gets pushed hard right when you need it most. A contractor can look at the age, the repair history, and the condition of the system and tell you whether it makes more sense to keep fixing it or replace it now.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, it usually makes sense to replace them together. A furnace and air conditioner installed at the same time are matched to work with each other, and doing the work in one visit means only one round of setup for the ductwork and controls. If your furnace is failing but the air conditioner is still in good shape, a contractor can install just the furnace and confirm it will still pair correctly with what you have.
- What happens during an HVAC installation?
- A contractor removes the old furnace or air conditioner, sets the new unit in place, and connects it to the ductwork, the gas line or electrical circuit, and the thermostat. They check the refrigerant lines on an air conditioner or the venting on a furnace, then run the system to confirm it heats or cools correctly and cycles the way it should. Before leaving, they should walk you through the thermostat settings and anything specific to your new system.