Furnace Installation in Troy, MI
A new furnace here will run from October through May 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.
Eight months of heat is what a Troy furnace has to handle
In Troy, homes need heat from October through May. That's 8 months a year, with winter nights averaging 19°F. A furnace here spends most of the year working, not just getting through a cold snap or two.
Most homes in the area heat with gas, and any non-weatherized gas furnace built since November 2015 has to reach at least 80 percent AFUE by federal rule. Power is worth planning for too. Over the past ten years the area has recorded 16 winter storms and 164 damaging wind events, and in 2024 more than a third of Michigan households lost power for 24 hours or more. A furnace installed here should be sized for a long cold season and set up with that kind of outage in mind.
- 8 months
- October through May, your furnace is on duty
- 19°F
- the average winter night it heats against
- 86%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $130 a year to run in Oakland County compared with a gas furnace.
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 license is held by the contractor, not the job, so it covers the business the Board of Mechanical Rules tested and put on record, not a separate paper for your furnace.
For this install, that license is what stands behind the person running gas line and venting in your home. In most cities and counties, the job also needs a permit from the local building office and an inspection once the work is done, and that applies in Oakland County too. The permit and inspection cover the installation itself, apart from the contractor's license. With 85.9% of homes in Oakland County heating with gas, that inspection is largely about the gas connection and the venting.
Sources: Michigan Legislature · Michigan Department of Licensing and Regulatory Affairs
- What size furnace does my house need?
- It depends on your home's square footage, insulation, window count, and layout, so there's no single number that fits every house. A furnace that's too big cycles on and off too fast and never heats evenly. One that's too small runs constantly and still can't keep up on the coldest nights, and Troy sees winter lows averaging 19°F. A contractor sizes it with a load calculation that looks at your specific house, not a chart based on square feet alone.
- How do I know it's time to replace my furnace?
- An aging furnace is the first clue, and one that's been running a long time is worth having inspected even if it still fires up fine. Rising repair frequency is the second sign. If you're calling for service every winter, or a repair estimate is climbing toward what a new furnace would cost, replacement usually makes more sense than another fix. Uneven heat between rooms, a furnace that won't shut off, or a yellow flame instead of blue are also signs to get it looked at soon. Homes in Troy need heat from October through May, eight months of the year, so a furnace on its way out doesn't get much of a break to fail quietly.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what furnace you have now. A high-efficiency furnace turns more of the gas it burns into heat instead of losing it out the flue. Every non-weatherized gas furnace made since November 2015 has to reach at least 80 percent AFUE, so the real choice is between that baseline and a model built to do better than it. With heat needed eight months of the year here and most homes running on gas, the difference shows up on more bills than it would somewhere with a shorter winter. A contractor can walk through the cost difference against your current furnace's efficiency to see if it makes sense for your house.