Written for western Montana homeowners by Osprey Heating & Air LLC, a veteran-owned HVAC company in Missoula. General guidance only: every home is different, and permit rules vary by city and county. Never work on gas lines, burners, refrigerant or high-voltage wiring yourself.
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No heat & safety
My furnace stopped working on a cold night. What should I check first?
Check the simple things first: the thermostat is set to heat and has working batteries, the furnace switch (it looks like a light switch near the unit) is on, the breaker hasn’t tripped, and the filter isn’t clogged. If none of that brings it back, call for service.
Don’t take panels off, reset the furnace over and over, or work on the burners or gas valve. Repeated resets can hide a real safety problem. Call Osprey at (406) 218-6984; after-hours availability is limited, so call or text and leave details.
What should I do if I smell gas?
Leave the house right away and get everyone out. Don’t flip light switches, start a car in an attached garage, light anything or use your phone inside. Once you’re outside and at a distance, call your gas utility or 911.
Don’t go back in until the utility or fire department says it’s safe. After that, have the appliance repaired before it’s used again.
My carbon monoxide alarm is going off. What do I do?
Get everyone, including pets, out into fresh air and call 911 from outside. Don’t go back in until responders say it’s safe.
Carbon monoxide has no smell. Headaches, nausea or dizziness that improve when you leave the house are warning signs. Every fuel-burning appliance should be inspected before it runs again, and every home with gas, propane, oil or wood heat should have working CO alarms.
Is it safe to heat my house with the oven or a grill if the furnace is out?
No. Never use an oven, a grill, a camp stove or a generator to heat the inside of a house. They can produce deadly carbon monoxide or start a fire.
If you’re without heat in freezing weather, call for service, close off unused rooms, and use a space heater rated for indoor use only according to its instructions, kept well clear of anything that can burn and never left unattended. If the house becomes unsafe, go somewhere warm.
How do I keep pipes from freezing if my heat goes out?
Keep cabinet doors under sinks open so warm room air reaches the pipes, let faucets on outside walls drip, and call for heating service right away.
If the house will be cold for a long time, it may be worth shutting off the main water valve. If a pipe has already frozen, don’t thaw it with an open flame.
Why does my furnace start, then shut off after a few seconds?
The most common cause is a dirty flame sensor: the furnace lights, can’t confirm the flame, and shuts the gas off as a safety measure. Clogged filters, venting problems and failing parts can cause the same symptom.
Because it involves the burner and gas safety controls, this is a service call, not a DIY fix. One Osprey customer described exactly this: a zone heater with a sensing problem that shut itself down on a cold night.
Repair or replace
Should I repair or replace my furnace?
Repair usually makes sense when the furnace is under about 15 years old, the repair is modest, and it has been reliable. Replacement starts to make sense when it’s older, needs a major part, keeps breaking down, or your bills keep climbing.
The honest answer depends on the actual diagnosis. Osprey explains what’s wrong, what your options are and what actually makes sense, with no sales pressure and no inflated upgrades. One customer had an older unit where parts were hard to find, and Matt tracked them down to keep the cost down.
How long does a furnace last?
Many gas furnaces last roughly 15 to 20 years, and some longer. How well it was installed, sized and maintained matters as much as the brand.
A furnace that was oversized, starved for return air or never maintained can wear out much sooner. Annual tune-ups help a system reach the long end of its life.
How long does an air conditioner or heat pump last?
Central air conditioners commonly last around 12 to 15 years or more. Heat pumps run year-round, so they often have a somewhat shorter life than an AC that only runs in summer.
Clean coils, correct refrigerant charge and good airflow all extend that life. In western Montana, keeping snow and ice off the outdoor unit matters too.
What’s the difference between a tune-up and a service call?
A tune-up is preventative maintenance on a system that is working. A service call is diagnosis and repair of a system that isn’t.
During a tune-up the technician inspects, cleans, tests and verifies the equipment. During a service call the technician becomes a troubleshooter, tracing electrical faults, controls, pressures and airflow until the cause is found. That’s why they’re priced differently, and why booking a tune-up for a dead system sets the wrong expectations.
Do you offer free estimates?
Yes. Osprey Heating & Air offers free estimates for new system installations and replacements.
Diagnostic and repair visits are billed separately from free estimate appointments. Call (406) 218-6984 for current service pricing.
Why do HVAC quotes for the same job vary so much?
Because they often aren’t for the same job. Quotes can differ in equipment, materials, labor, ductwork, permits, testing and the warranty and support behind them.
A low price isn’t automatically a bad one, but compare line by line. Ask what equipment is included, whether permits and inspections are included, who handles warranty work, and whether the contractor will still be around in two years.
Heat pumps in a Montana winter
Do heat pumps work in Missoula winters?
Yes, if you choose a cold-climate model and size it correctly. Modern cold-climate heat pumps keep producing heat well below zero, though their output and efficiency drop as it gets colder.
Because western Montana sees subzero cold snaps, most homes do best with a heat pump paired with a gas or propane furnace, or with electric backup heat, for the coldest nights. Installation details matter too: the outdoor unit should sit above the snow line with room to drain defrost water.
What is a dual-fuel system?
A dual-fuel system pairs an electric heat pump with a gas or propane furnace. The heat pump handles most of the year, and the furnace takes over when it gets cold enough that the furnace is the better choice.
It’s a common fit in Missoula, where natural gas is widely available and winters are cold, because you get efficient heating and central air from the heat pump without giving up the furnace’s strength on the coldest nights.
Why is my heat pump blowing steam or making whooshing noises in winter?
That’s usually the defrost cycle, and it’s normal. In cold, damp weather frost builds on the outdoor coil, and the heat pump periodically reverses for a few minutes to melt it, which can release a cloud of steam.
What isn’t normal is an outdoor unit encased in ice that stays that way, or one that never stops running defrost. Clear snow away from the unit, but don’t chip ice off the coil; call for service.
Are mini-splits good for western Montana?
Yes. Ductless mini-splits are heat pumps without ductwork, and they’re a strong fit for additions, bonus rooms, garages, shops, cabins and homes heated with baseboard or a wood stove.
Cold-climate models heat well into subzero temperatures. Like any heat pump, they need correct sizing, an outdoor unit mounted above snow, and filters cleaned regularly. Osprey installs them and walks you through the remote and filter care before leaving.
Will a heat pump lower my heating bill?
It can, especially compared with electric baseboard or propane. A heat pump moves heat rather than making it, so it often delivers several times more heat than the electricity it uses in mild weather.
Compared with natural gas the savings depend on gas and electric rates and how cold it gets. That’s why many Missoula homes use a heat pump for most of the season and keep the gas furnace for the coldest weather.
Smoke, filters & indoor air
How do I keep wildfire smoke out of my house?
Keep windows and doors closed, run your HVAC fan with the best filter your system can handle, and use a portable HEPA air cleaner in the rooms you use most. Follow Missoula City-County Health Department and Montana DEQ air quality updates during smoke events.
If your system draws in outdoor air, ask whether it can be closed off during heavy smoke. A system that struggles to move air through a better filter may need duct or blower attention, which is something Osprey can evaluate.
What MERV rating filter should I use?
For most homes a MERV 11 to 13 filter is a good balance of filtration and airflow, and it does a much better job on smoke particles than a basic fiberglass filter.
Higher-rated filters can restrict airflow on systems with small returns, which hurts comfort and efficiency. If a better filter makes rooms colder or the system louder, have the airflow checked rather than going back to a cheap filter.
How often should I change my furnace filter?
Check it monthly and replace it when it looks dirty. One-inch filters often need changing every one to three months; thicker media filters can last longer.
Change it more often during smoke season, when running the fan a lot, with pets, or during construction. A clogged filter is one of the most common causes of poor heating, frozen AC coils and nuisance shutdowns.
Can winter inversions affect the air inside my home?
Yes. When cold air and smoke get trapped on the valley floor, outdoor air quality can drop for days, and some of that gets inside.
Good filtration, a well-sealed house and a properly vented furnace all help. If you burn wood, follow local burn restrictions during air alerts.
My house is very dry in winter. Is that normal?
Yes. Cold Montana air holds little moisture, so heated indoor air gets very dry, which can mean static shocks, dry skin and gaps in wood floors.
A humidifier can help, but in very cold weather too much humidity can condense on windows and inside walls. Moderate levels are the goal. Ask Osprey what fits your system and home.
Do you clean dryer vents?
Yes. Osprey Heating & Air lists dryer vent cleaning among its air quality and ventilation services.
A clogged dryer vent makes drying slow and is a real fire risk. If clothes take more than one cycle to dry or the laundry room gets hot, it’s time to have the vent cleaned.
Ducts, airflow & equipment
Why are some rooms always too hot or too cold?
Usually airflow: undersized or leaky ducts, too few returns, closed or blocked registers, or one system trying to serve floors with very different needs.
The fix might be balancing, duct changes, sealing, or adding a ductless unit to the problem room. Osprey evaluates hot and cold spots, airflow and overall system performance before recommending anything.
What is custom sheet metal fabrication, and why does it matter?
It means building ductwork, plenums and transitions to fit your exact equipment and space, instead of forcing off-the-shelf pieces together. Osprey fabricates this in-house.
Proper transitions keep air moving smoothly into and out of the equipment. Poor connections cause noise, lost airflow and shortened equipment life, no matter how good the new furnace or air handler is.
What size furnace or heat pump do I need?
The right size comes from a load calculation that looks at your home’s square footage, insulation, windows, air leakage and local climate, not from the size of the old unit.
Oversized equipment short-cycles, wears out sooner and leaves rooms uneven; undersized equipment can’t keep up on the coldest nights. Ask any contractor how they sized the system they’re quoting.
What do SEER2, HSPF2 and AFUE mean?
They’re efficiency ratings. SEER2 rates cooling efficiency, HSPF2 rates heat pump heating efficiency, and AFUE rates how much of a furnace’s fuel becomes heat in your home. Higher is more efficient.
The "2" versions came with updated federal test procedures in 2023, so the numbers aren’t directly comparable to older SEER and HSPF ratings. In a cold climate, a heat pump’s low-temperature heating capacity matters as much as its rating.
My old AC uses R-22. Can it still be fixed?
Sometimes, but R-22 is no longer produced in the United States, so any recharge relies on limited reclaimed supply and can be expensive. A system that keeps losing R-22 usually has a leak worth weighing against replacement.
Older systems can’t simply be refilled with a different refrigerant without a proper evaluation. Refrigerant work requires EPA certification and should never be done DIY.
What is the refrigerant change from R-410A to A2L refrigerants?
Under federal rules, new residential air conditioners and heat pumps are moving from R-410A to lower-global-warming refrigerants such as R-454B and R-32, which are classed as A2L (mildly flammable).
Existing R-410A systems can still be serviced. New A2L equipment has its own installation and safety requirements, so when you replace a system, the indoor and outdoor parts should be matched and installed by someone trained on them.
Do I need a new thermostat with a new system?
Not always, but heat pumps and dual-fuel systems often need a thermostat that can manage them correctly. A thermostat set up for a furnace-only system can run backup heat far more than necessary.
If your system short-cycles, doesn’t respond, or the display is blank, thermostat troubleshooting is a good first step. Osprey handles it.
Hiring an HVAC contractor in Montana
Does Montana require a license for HVAC contractors?
Montana doesn’t issue a statewide HVAC license the way it licenses electricians and plumbers. Contractors register with the Montana Department of Labor & Industry, and anyone handling refrigerant needs federal EPA Section 608 certification.
Osprey Heating & Air lists Montana Contractor Registration #284236. Mechanical permits and inspections are handled by the local building department, so ask any contractor whether permits are included.
How do I choose a reputable HVAC contractor in Missoula?
Ask a few direct questions: Are you registered and insured? Will I get a written estimate that explains the scope? Are permits and inspections included when required? Who handles the equipment and labor warranty? Will you be around if there’s a problem two years from now? Why are you recommending this repair or replacement?
A professional should answer all of that without pressure. Matt has written that healthy competition makes every company better and that there is enough work in the Missoula area for honest companies to succeed while respecting one another.
Is Osprey Heating & Air veteran-owned?
Yes. Osprey Heating & Air is owned by Matt Dobrowolski, who served in the United States Army Infantry.
When you call Osprey, you’re working directly with the owner, not a sales team.
What areas does Osprey Heating & Air serve?
Missoula and the surrounding communities: Lolo, Frenchtown, Huson, East Missoula, Bonner, Clinton, Florence, Stevensville, Victor, Hamilton, Seeley Lake, Drummond and Polson.
If you’re near one of those towns but not sure, call (406) 218-6984 to confirm.
What are Osprey’s hours?
Monday through Friday, 8:00 AM to 5:00 PM. Closed Saturday and Sunday.
There is limited after-hours emergency availability: call or text (406) 218-6984.
Are there rebates for heat pumps or furnaces in Montana?
Sometimes. NorthWestern Energy has run efficiency rebate programs, and some rural electric cooperatives offer their own, but amounts, eligible equipment and deadlines change.
Check with your utility before you buy, and ask your contractor for the model numbers so you can confirm eligibility. The federal 25C tax credit for heat pumps and furnaces ended for equipment installed after 2025.
