What a Furnace Inspection Covers, and Why Each Check Matters
What a technician checks on a furnace inspection in Minnesota, from gas pressure to the heat exchanger. It is part of our $129 tune-up, or $219 with the AC.
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A tune-up in Blaine is $129 for one furnace or one air conditioner, and $219 when we do both on one visit. We clean, test and measure each system, check the vents and drains, and tell you what is wearing before we leave.
Blaine has two kinds of tune-up. In the south-end ramblers and split-entries from the 1950s and 60s, the furnace often shares a chimney with the water heater, so we check draft and take a carbon monoxide reading along with the usual cleaning and testing. The air conditioning there was usually added later on heat-sized ducts with a single return, so we measure airflow and the temperature drop across the coil.
In the lake-side subdivisions to the north, the houses are tight and PVC-vented. The visit there centers on the intake and exhaust pipes, the condensate drain and the air exchanger, whose core and filters need cleaning to keep a sealed house from getting stuffy. Many of these first furnaces and condensers are now old enough that we also check how much life they have left.
Updated October 27, 2026
Each $129 visit covers cleaning, a safety and carbon monoxide check and a written report. Boilers, heat pumps and mini-splits fall in our $129–$349 maintenance range, confirmed when you book. North Blaine is flat and open, a legacy of the sod farms, and wind across the ponds drifts snow against side-wall vents and heat pump outdoor units on the houses facing the water.
We check that the side-wall intake and exhaust pipes are clear and properly sloped, test the pressure switch, and flush the condensate trap. Open ground by the ponds drifts snow against vents, so we also tell you where a shield or a taller stand would help. Heat pump outdoor units get the same review.
We look at it. Newer Blaine houses are tight enough that the air exchanger matters, so we check that it runs, clean or replace its filters, and note whether the core needs washing. Some cores are best done by the homeowner on a schedule we explain. If something is failing, we quote the repair before any work starts.
Signs your system is overdue for a tune-up
What a technician checks on a furnace inspection in Minnesota, from gas pressure to the heat exchanger. It is part of our $129 tune-up, or $219 with the AC.
Read the guideClean an outdoor AC coil safely: power off at the disconnect and breaker, brush cottonwood off dry, rinse with a garden hose, never a pressure washer.
Read the guideIce on the big copper line, long run times, a system that needs refrigerant every summer: how a coil leak shows up, how it's confirmed, and repair vs replace.
Read the guideHeat out? AC quit? Call or send a request.