Farmington Hills particulars
Roughly half of Farmington Hills housing is older than 1980: 53.7 percent of homes were built before then, and older houses tend to carry older furnaces and ductwork. The median home value is $333,200. Homeowners pulling their own mechanical permit face an extra step. Instructions on the Building Division's page, effective August 2026, require a signed, notarized Homeowner Affidavit attached to each BS&A Online permit application, followed by online payment.
Contractors register with the city instead. The page does not name mechanical permit types, so confirm the right category with the division at 248-871-2450, 31555 W. Eleven Mile Road. The city also runs a mandatory Single-Family Rental Dwelling Registration, Safety and Maintenance Inspection Program for rentals. For heat, we use the Detroit Metro airport normals as our nearest station, about 6,067 heating degree days a year (base 65 F). Only DTE Electric reaches Farmington Hills, and the gas is mostly Consumers Energy; confirm by address if you live near a boundary.
A gas furnace replacement points to Consumers Energy's 2026 chart (installs January 1 to December 31, 2026; amounts can change without notice). Farmington, Novi and Southfield have their own offices; for a new thermostat, see thermostat.
Emergency HVAC in Farmington Hills: what to know
Natural gas from Consumers Energy calls for one sequence anywhere: leave at once, use no electric device including a phone until you are outside, call 911, then 800-477-5050. The Consumer Product Safety Commission's step for a sounding carbon monoxide alarm is fresh air and 911. Gas in Farmington Hills is mostly Consumers, with a thin DTE Gas share, so check the bill for the name.
The city runs a mandatory registration and safety inspection program for single-family rentals, aimed at minimum standards of fire, health and life safety, though its published text gives no furnace item. A cold house caused by a shutoff is covered in our winter utility shutoff guide. The Building Division, 248-871-2450, issues the permit for an emergency furnace swap.
Permits for emergency hvac in Farmington Hills
LARA's permit rule excepts replacement of minor parts, so an emergency part swap generally needs none.
What counts as an emergency
- You smell gas: leave, call 911 and your gas utility from outside.
- A carbon monoxide alarm sounds or several people feel flu-like without a fever.
- No heat but the house is not yet cold, with no smell and no alarm: check the thermostat and filter, then book a visit.
- A noisy furnace that still heats.
Checks while you wait
Try this first: once outside, count everyone, because the first rule is that nobody goes back in for a pet or a phone.
- Set the thermostat to heat, above the room temperature, with fresh batteries if it takes them.
- Change or clean the filter; ENERGY STAR says monthly.
- Note any light pattern or code on the furnace and stop; do not remove panels or relight after any gas smell.
What emergency hvac costs
The estimate below is the Michigan-wide one, adjusted for Michigan wages and not for Farmington Hills in particular. The same table is on the emergency hvac page. How we estimate costs. Prices as of Oct 19, 2026.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $120 to $285 per hour of labor, before any call-out fee | Built from one national published range, adjusted by the Michigan HVAC technician wage ratio (1.00). |
| Technician wage, Michigan mean | $31.01 an hour | Technician pay (BLS, May 2025), not a price. |
| Technician wage, Detroit-Warren-Dearborn mean | $32.06 an hour | Technician pay, not a price. |
| Technician wage, Grand Rapids-Kentwood mean | $30.86 an hour | Technician pay, not a price. |
| Furnace replacement permit, Grand Rapids | $21 plus a $52 application | If the repair becomes a replacement. Effective July 1, 2026. |
How we estimate costs: the figures here are estimates, not quotes, built from BLS wages, published city permit fees and federal energy-cost evidence. We are collecting the prices Michigan heating and cooling companies publish; we have not yet collected quotes from them, and we will say how many and from when once we do. Estimated range. Built from national published ranges (1 source), adjusted by Michigan's HVAC technician wage ratio to the US (1.00, BLS May 2025), plus the local permit fee where the city publishes one. Not a quote. We have too few Michigan company prices yet to show a range. Full method.
Questions about emergency hvac
What counts as an emergency HVAC repair?
Those go to 911 and your gas utility first. A furnace that has stopped in freezing weather is urgent but is a call to a heating company once you are sure there is no smell and no alarm.
What should I do if I smell gas near my furnace?
DTE and Consumers Energy both say 911 first. Do not look for the source or use switches, appliances or phones inside, and stay out until responders or the utility say it is safe.
Can I cancel a repair contract signed during an emergency?
Michigan law lets a buyer cancel a home solicitation sale until midnight of the third business day, but not when you request the work without delay because of an emergency and the conditions are met. It covers sales solicited at your home, which is our interpretation of the statute; LARA can confirm.