Furnace Installation in Detroit, MI
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Wayne County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, and winter lows near 21°F
Furnaces in Wayne County run from October through May, 8 months a year. Winter nights average 21°F here, and on the coldest stretches the furnace is running most of the day and night to keep up.
Most homes in the area heat with gas, and any non-weatherized gas furnace built since November 2015 has to meet 80 percent AFUE by federal rule. A new install here has to hold up to that long a season and that kind of cold, not just meet the minimum on paper.
- 8 months
- October through May, your furnace is on duty
- 21°F
- the average winter night it heats against
- 84%
- 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 $120 a year to run in Wayne County compared with a gas furnace.
Estimates for a typical Wayne 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.
Michigan tested this contractor and keeps a record of them through the Board of Mechanical Rules. That license belongs to the contractor, not to this one job, so it tells you this is someone the state already checked, not someone signing on just for your furnace.
Most cities and counties require a permit before a furnace swap starts and an inspection once it's done. That inspection is what confirms the gas line and venting were connected correctly, and with 83.6% of homes in Wayne County heating with gas, that is the connection worth getting right.
Sources: Michigan Legislature · Michigan Department of Licensing and Regulatory Affairs
- What size furnace does my house need?
- The right size depends on your square footage, your insulation, your ceiling height, and how many windows you have, so there is no single number that fits every house. A furnace that is too big cycles on and off fast and never runs long enough to heat evenly. One that is too small runs constantly and still can't keep up on a night at 21°F. A contractor will do a load calculation on your actual house before recommending a size, and with heat needed from October through May, getting this right matters more here than in milder places.
- How do I know it's time to replace my furnace?
- If your furnace needs frequent repairs, or can't keep the house warm on the coldest nights, it's time to start looking at replacement. Watch for rising gas bills without a change in usage, rooms that heat unevenly, or short cycling where it turns on and off in quick bursts. A furnace that struggles now will only get worse across 8 months of heating season here. If a repair would cost close to what a new unit runs, replacement is usually the better move, and a licensed contractor can tell you which side of that line your furnace is on.
- Is a high-efficiency furnace worth it?
- For a house that needs heat from October through May, a high-efficiency furnace works harder for you than it would somewhere with a short winter. Every non-weatherized gas furnace made since November 2015 has to hit at least 80 percent AFUE, so even a basic new unit is already efficient by law. Furnaces rated higher than that waste less gas venting heat outside, and with 83.6% of homes here heating with gas, that difference shows up on a bill over eight months of use. Whether the higher upfront cost pencils out for your house is something a contractor can walk through with you based on your actual usage.