Heating and cooling in Farmington Hills
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.
What heating and cooling work costs near Farmington Hills
We have collected no quotes for Farmington Hills, so there is no price for the city itself. The statewide estimates are on each service page, and the Michigan page shows what technicians are paid (the Michigan mean in BLS data for May 2025 is $31.01 an hour, which is pay, not price) and the permit fees we could read. How we estimate costs.
Permits for heating and cooling work in Farmington Hills
Mechanical work may not start until a permit is issued, except replacement of minor parts. A furnace, central air conditioner or heat pump replacement is not on LARA's exemption list, which is our inference from the list, not a sentence LARA wrote. Read the permit guide
Heating and cooling jobs in Farmington Hills
The short answer to each job, as it applies across Michigan. Each links to the full page with the cost evidence, permit rules and what to try first.
- Furnace repair in Farmington HillsFurnace repair starts with two free checks, the thermostat setting and the filter. If you smell gas or a carbon monoxide alarm sounds, leave the house and call 911 and your gas utility before anything else.
- Emergency HVAC in Farmington HillsFor emergency HVAC repair, the first call depends on what you notice. A gas smell or a sounding carbon monoxide alarm means leaving the building and calling 911 and your gas utility, not a repair company.
- Furnace replacementFurnace replacement in Michigan involves choosing an efficiency level, a mechanical permit and a company with the right license. ENERGY STAR's specification for the northern U.S., which includes Michigan, is 97% AFUE, against a federal floor of 80%.
- Boiler repairBoiler repair in Michigan falls under mechanical contractor licensing, which is separate from plumbing licensing. For steam or vapor boilers up to 15 psig in a private residence, LARA says the permit must be secured by a licensed mechanical contractor in the hydronic heating and cooling and process piping classification.
- Heat pump installationHeat pump installation in Michigan comes down to choosing a model tested for cold weather and checking which rebates still have money. ENERGY STAR cold climate heat pumps are tested down to 5 F, and ENERGY STAR advises a back-up energy source at lower temperatures.
- AC repair in Farmington HillsAC repair in Michigan starts with checks you can do yourself: the filter, the thermostat setting, the breaker and any water near the indoor unit. Refrigerant is different, because under EPA Section 608 only certified technicians may buy refrigerant for stationary air conditioning, so a top-up is not a do-it-yourself job.
- AC installationAC installation in Michigan needs a mechanical permit, a size worked out from your house rather than from the old unit, and an efficiency rating of at least 13.4 SEER2 for a split system.
- Mini-split installationMini split installation adds a ductless heat pump to a house without running new ducts, and in Michigan the first question is how it will heat in January. ENERGY STAR says certified mini splits use up to 60% less energy than standard home electric radiators; that compares them with electric resistance heat and says nothing about a gas furnace.
- Duct cleaningWe found no government source on the benefits of duct cleaning, so this page makes no claim for it. The federal evidence we did find is about sealing and insulating ducts: ENERGY STAR says doing so can improve the efficiency of a heating and cooling system by as much as 20 percent.
- Thermostat installationThermostat installation is the smallest job in this trade, and in Michigan the rebate matters more than the labor. DTE offers $50 for a Wi-Fi thermostat, one per household, with applications due within six months of purchase and no later than December 31, 2026.
- Indoor air qualityIndoor air quality work on a heating and cooling system starts with the dull items: the filter, the condensate drain and leaky ducts. ENERGY STAR says to change or clean filters monthly and to have a contractor check the system before each season.
More on Michigan heating and cooling
Licensing, permits and the mechanical code are covered once for the whole state on the Michigan page. To check an HVAC contractor, read how to find a licensed HVAC contractor in Michigan.