HVAC Services in Hillsdale, MI

Heating

Where most of the work is. This county runs 36.2% propane and 44.1% natural gas, and a quarter of its houses predate 1940.

• Furnace Repair No heat, short cycling, a furnace that lights and drops out.
• Propane Furnace Service Tank-fed systems — the most common heating in the county.
• Furnace Replacement Replacement and sizing for a 6,470 degree-day load.
• Emergency Heating Repair A dead furnace on a 17-degree January night.
• Converting an Oil Furnace to Propane The conversion MiPropane pays $250 toward.
• Boiler Repair Hot water and steam in the pre-1940 housing stock.
• Boiler Replacement Replacing a boiler without ripping out the radiators.
• Furnace Tune-Ups The cheapest month to find a marginal furnace is September.
• Heat Pump Installation What works at −15°F, and the rebate rule that catches people.

Cooling and air

Shorter season, real work. Zone 5A summers plus a housing stock that often has nowhere to put a duct.

• Air Conditioning Repair Cooling work, spring through September.
• Air Conditioner Installation Sizing for a short, humid season.
• AC Tune-Ups The Consumers tune-up rebate runs 1 April to 30 September only.
• Ductless Mini-Split Installation For houses with no duct chase to work with.
• Ductwork Services Runs added piecemeal to a hundred-year-old house.
• Indoor Air Quality Filtration, humidity and ventilation in a tight retrofit.

Water heating

Both types qualify for the MiPropane rebate when they replace electric or fuel oil equipment.

• Water Heaters Storage tanks, and what the propane rebate covers.
• Tankless Water Heaters Also $250 from MiPropane, with conditions.

Money

What things cost, what you can claim in 2026, and how to pay for it. Sourced, and labelled where the figure is statewide rather than local.

• What HVAC Service Actually Costs Around Here Published ranges, with the sourcing shown.
• Financing Your Repair or Replacement Michigan Saves, and why nobody can quote you a rate.
• Annual Maintenance Plan An annual plan, priced honestly.

Why the List Is Ordered This Way

Three published figures decide what HVAC work in this county actually consists of, and they are the reason heating sits at the top of the list rather than cooling.

The fuel. Of 17,858 occupied housing units in Hillsdale County, 36.2 percent heat with bottled, tank or LP gas against 8.6 percent for Michigan as a whole, and natural gas reaches only 44.1 percent against 75.2 percent statewide (US Census ACS B25040). More than one home in three is tank-fed, which changes the diagnosis on a no-heat call, removes the utility rebate, and removes Winter Protection Plan coverage.

The housing. 5,735 of the county's 21,490 housing units — 26.7 percent — were built in 1939 or earlier, against 14.5 percent statewide (ACS B25034). That brings boilers still in daily service, ductwork retrofitted into buildings never designed for it, and a lot of houses with nowhere to run a duct at all.

The climate. IECC zone 5A, 6,469.8 heating degree days a year, January mean minimum 17.5°F, and about 53 percent of the annual heating demand landing in December, January and February. Sizing errors that hide through a mild autumn surface at full load.

What Decides Which Rebate You Can Claim

Almost every page on this list ends up at the same question, so it is worth stating once here: in Hillsdale County the money available on a job is decided by who bills you, not by what you install.

• Inside the City of Hillsdale, electricity comes from the municipal Board of Public Utilities — 6,131 customers — so those homes are not Consumers electric customers and go through Efficiency Smart. Natural gas in Hillsdale and Coldwater is Michigan Gas Utilities Corporation, not Consumers. Both Consumers routes are closed.
• Out in the townships, electricity is Consumers, and the 2026 Consumers electric measures apply.
• On propane, there is no utility rebate at all — a dealer is not a regulated utility — but MiPropane pays $250 per unit on qualifying equipment.
• Nowhere in this county can claim a DTE rebate. DTE does not serve Hillsdale, Branch or Jackson counties.

And nothing federal in 2026: the 25C credit applies only to property placed in service before 31 December 2025, and 25D is likewise unavailable after that date, per the IRS.

Prices We Publish, and Prices We Will Not

We publish installed furnace replacement ranges — $3,200 to $5,500 at 80 percent AFUE, $4,500 to $7,200 at 92–95 percent, $6,000 to $9,500 or more at 96–98 percent — labelled as Michigan-wide figures from a published contractor guide rather than local quotes, because that is what they are.

We do not publish repair prices, boiler prices, ductless or ductwork prices, propane per gallon, or payback periods, for one reason in every case: no sourced figure exists that we can stand behind. A precise number we invented would be worse than none, because it is the number you would plan around.

Not Sure Which One You Need?

Describe what the system is doing and we will tell you which of these it is. If it turns out to be a delivery problem rather than a repair — which in this county it often is — we will say that too.