What a Furnace Inspection Covers, and Why Each Check Matters
What a technician checks on a furnace inspection in Minnesota, from gas pressure and combustion to the heat exchanger, and what each reading tells you.
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A furnace or AC tune-up in Minneapolis is $129 with us, and both on one visit are $219, the same as every town we serve. Boilers and mini-splits fall in our $129–$349 maintenance range, confirmed when you call 612-429-3465. Ask us about a maintenance plan if you want seasonal reminders.
The typical Minneapolis furnace sits in a low basement next to the water heater, both venting into one old chimney, often on ducts left from a gravity conversion. That setup is what a fall tune-up here is really about. We clean the flame sensor and test the igniter and inducer, then check that the water heater still drafts properly with the furnace running, since a partly blocked or unlined chimney can spill exhaust back into the basement. A carbon monoxide reading goes with it.
In spring the AC gets its coil rinsed, and outdoor units near the river or the Chain of Lakes collect cottonwood in June. On older condensers still running R-22, we tell you what a leak would cost to chase before it happens. Boiler owners get a different list: system pressure, the expansion tank's air charge, the relief valve and circulator, and on steam, the low-water cutoff and sight glass.
Updated September 23, 2026
A furnace or AC tune-up in Minneapolis is $129, or $219 for the furnace and AC together. Maintenance plans are available on request. Same prices in Minneapolis as in every town we serve. For what drives a quote locally, see HVAC cost in Minneapolis.

More detail on our maintenance & tune-ups page.
Yes, maybe more than on a new one. An older furnace is where a cracked heat exchanger, a rusted burner or a weak chimney draft shows up, and those are safety problems as much as comfort ones. We inspect what we can see of the heat exchanger, take a CO reading and check the draft. If the furnace is near the end, you hear it in October instead of on a January night.
Book the boiler in early fall and the mini-split in spring, or both on one visit. The boiler check covers pressure, the expansion tank, relief valve, circulator and venting. The mini-split needs its indoor coil and blower wheel cleaned, the drain checked and the outdoor unit cleared. Maintenance visits run $129–$349 depending on the equipment, and we confirm the price when you book.
What a technician checks on a furnace inspection in Minnesota, from gas pressure and combustion to the heat exchanger, and what each reading tells you.
Read the guideClean your outdoor AC coil the safe way: power off at the disconnect and breaker, brush cottonwood off dry, rinse with a garden hose, and know when to stop.
Read the guideA few hours without a furnace filter won't hurt much; weeks can. What dust does to the blower, AC coil and heat exchanger, a safe stopgap and the right size.
Read the guideTune-ups in Minneapolis? Call or send a request.