What air conditioner repair costs in Michigan, and what we can and cannot tell you

Why Michigan air conditioning is a short, hard season

Cooling here is a summer job. NOAA’s 1991 to 2020 normals count about 847 cooling degree days a year at Detroit Metro Airport, about 732 in Grand Rapids and about 656 at Lansing’s airport, compared with heating degree days in the thousands. An air conditioner can sit idle for most of the year and then fail on the first week of heat, which is when every other homeowner’s air conditioner is also being asked to work.

The heating side of the ledger is covered in furnace repair cost. This page covers the cooling side, and the same habit helps with both: learn what shapes the bill before you need a technician.

What an AC repair bill is made of

We have no Michigan breakdown of an AC repair bill, so this section is general explanation with no numbers. There is a visit or diagnostic fee, the technician’s time to find what failed, a part, and the labor to fit it. ENERGY STAR’s maintenance checklist names the condensate drain on central air conditioners, furnaces and heat pumps in cooling mode, adding that a plugged drain can cause water damage in the house.

Some repairs add one more thing, which is refrigerant. That is where federal rules change what the job involves.

Refrigerant rules that shape the job

EPA Section 608 requires technicians who maintain, service, repair or dispose of equipment that could release refrigerant to be certified through an EPA-approved test. Only certified technicians may buy refrigerant for stationary air conditioning, and EPA prohibits venting it on purpose while servicing. For you, the practical result is that a company topping up a system should be a company whose technician holds that credential, so ask.

Older systems raise a common worry. EPA says U.S. production and import of R-22 ended January 1, 2020, but you may continue to use it in an existing system for as long as necessary. EPA also calls propane-based “R-22a” highly flammable and not an acceptable substitute in residential air conditioning. Newer equipment is covered by a separate rule: from January 1, 2025, EPA limits stationary residential air conditioners and heat pumps to a global warming potential of 700. That applies to new equipment, and the page we read says nothing banning service of an existing system.

What we have, and what we are still collecting

Our table of company prices is empty for now. We are collecting what Michigan heating and cooling companies publish on their own sites, and when we have enough they will appear with the number of companies and the date we read them. Meanwhile the table holds what we can source.

Row	Figure	What it is
Michigan, statewide	$31.01 mean, $29.26 median an hour	Pay for heating, air conditioning and refrigeration mechanics and installers (12,590 workers)
Detroit-Warren-Dearborn	$32.06 mean an hour	Same occupation, metro area
Grand Rapids-Kentwood	$30.86 mean an hour	Same occupation, metro area
Lansing-East Lansing	$30.49 mean an hour	Same occupation, metro area
Ann Arbor	$35.94 mean an hour	Same occupation, metro area
United States	$31.14 mean an hour	National figure for comparison
Grand Rapids permit	$52 application plus $21 for replacement air conditioning	Fee schedule effective July 1, 2026
Sterling Heights permit	$55 application plus $57 for a system of 5 tons or less	Application for 2026 to 2027
Dearborn permit	$100 administrative fee plus $30 for air conditioning under 5 tons	HVAC form dated October 2025
Westland permit	$100 administrative fee; air conditioning of 5 tons or less $83	Form revised July 1, 2026
State (LARA) permit	$75 application plus $30 for a split system	BCC-9 application, where the state enforces

Source: U.S. Bureau of Labor Statistics, May 2025 wage release; the permit schedules named, read October 19, 2026. Wages are what technicians are paid, not what you are charged. Permit fees apply to replacement and new work, so a repair may carry none.

Permits, licenses and who may work on it

LARA says mechanical work needs a permit except for replacement of minor parts, and its exemption list names window air conditioners of not more than 1.5 hp. A repair that swaps a minor part is therefore different from replacing the system, and your city office or contractor can say which applies. For the code behind this, see the mechanical permit guide.

On the licensing side, Michigan law says a person may not install, alter or service mechanical work unless the person or an employee holds a mechanical contractor’s license in that classification. Michigan has limited and unlimited refrigeration and air conditioning service classes, and our reading is that they cover servicing an air conditioner; LARA does not print a sentence that maps an air conditioner to one class. Ask each company for its license number and look it up on LARA.

Questions to ask before the technician starts

Ask what the visit fee covers and whether it is credited to the repair. Ask for the diagnosis in writing, with the part named, the labor listed and a note on whether refrigerant is involved, and keep it with the invoice, since a second company will want to see what the first one found. If a technician proposes replacing a unit, ask what it would take to repair it, and for the reasons in writing. ENERGY STAR says equipment more than 10 years old, or not keeping the house comfortable, should be evaluated by a professional HVAC contractor, which marks a point for an evaluation and gives no lifespan.

Replacement has its own floor. Central air conditioners made on or after January 1, 2023 must meet 13.4 SEER2 for a split system. For what that decision involves, see AC repair and AC installation.

Our guide to finding a licensed HVAC contractor covers the license lookup and where to complain if a job goes wrong.