How Often to Change a Furnace Filter in Minnesota
Check a 1-inch furnace filter monthly and change it when dirty, at least every 3 months; 4-inch media runs 6-12 months. Pets, smoke and fan-on shorten it.
Read the guideMaintenance Guides
Tune-ups, thermostats and the small jobs that keep equipment running longer.
Most breakdowns we see started months earlier as something small: a dirty flame sensor, a clogged condensate drain, a weak capacitor or a filter nobody changed. These guides cover what you can check yourself before each season, what a technician's tune-up actually includes, and how thermostats, zoning and placement affect comfort from room to room.
Our tune-ups are $129 for a furnace or an air conditioner and $219 for both, and maintenance plans are available on request. See maintenance and tune-ups and thermostats and zoning.
Can You Run a Furnace Without a Filter?
A 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 guideWhat's Normal When You First Turn On the Furnace in Fall
Turning the furnace on this fall? What to do before the start-up, which smells and sounds are normal, and the filter, humidifier and CO alarm steps.
Read the guideBest Place for a Thermostat, and 7 Spots to Avoid
The best location for a thermostat: an interior wall in a central, lived-in room about 5 feet up. Plus the 7 spots that read wrong and a simple test.
Read the guideHow to Clean Your Outdoor AC Coil Without Damaging It
Clean 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 guideWhat 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.
Read the guideHow to Clean a Furnace Flame Sensor Safely
Burners light, then shut off within seconds? Learn how to clean a furnace flame sensor safely, when to stop, and what our $129 tune-up or a repair covers.
Read the guideThermostat C-Wire: What It Does and How to Add One
What a thermostat C-wire does, whether your smart model needs one, finding a spare conductor, signs of low power, and the $90–$135 typical cost to add one.
Read the guideSpring AC Tune-Up Checklist for Minnesota Homes
Your spring AC checklist for a Minnesota home, what our $129 tune-up covers and why, and how to time it around cottonwood season. Call 612-429-3465.
Read the guideShould You Cover Your AC Unit in a Minnesota Winter?
Why a plastic cover does more harm than good on a Minnesota AC, when a plywood top makes sense, fall prep steps, and why a heat pump should never be covered.
Read the guideHoneywell Home vs Sensi Thermostats: Which Fits Your System
Sensi or Honeywell Home for a Minnesota house? Compare C-wire needs, heat pump staging and humidity control. HomeGuide puts installs at $225–$400 nationally.
Read the guideSmart Thermostats for Minnesota Weather: What Matters Here
Ecobee, Google Nest, Honeywell Home and Sensi compared on what matters in Minnesota: heat pump backup, winter humidity, room sensors and C-wire needs.
Read the guideWhy One Room Is Always Hotter or Colder, and How to Fix It
Why one room in a Minnesota house stays too hot or too cold, a symptom-to-fix table, and the order to check registers, returns, filter, dampers and ducts.
Read the guideHVAC Maintenance for Hudson, WI Homes: Season by Season
Hudson, WI homes need fall furnace and spring AC visits, plus air exchanger care in newer builds. Our tune-ups are $129, or $219 for both. Call 612-429-3465.
Read the guideFall Furnace Checklist: What to Do Before Winter
A fall furnace checklist for Minnesota homeowners: filter, vents, drain, CO alarms, humidifier, propane and a test run, plus what a $129 tune-up adds.
Read the guideMaintenance questions
When is the best time to book HVAC maintenance?
Book furnace maintenance in early fall before heating season and AC maintenance in spring before cooling season. Tune-ups are $129, or $219 for furnace and AC together.
Contact Us
Heat out? AC quit? Call or send a request.