Furnace Repair

HVAC system failures often occur without warning, typically at the most inconvenient times. Whether the issue involves a malfunctioning blower motor, ignition failure, or inadequate heat output, the Service Team at Design Air is equipped to respond promptly.

Common Signs of Furnace Issues

Watch for these warning signs that may signal a furnace malfunction:

• Your furnace won’t turn on—or turns on but then shuts off.
• No air is coming out from the vents when your furnace is on.
• Cool or lukewarm air is blowing out from the vents.
• Your carbon monoxide detector is going off.
• Your furnace is making unusual sounds.
• There is a concerning smell coming from your furnace.
• Your home struggles to remain warm.
• There are hot or cold spots throughout your Missoula, MT, home.
• You notice condensation on windows or doors.
• Your energy bills have been increasing for no known reason.

Not sure what is causing the problem? Call our Design Air professionals. We are happy to evaluate your system and its efficiency.

Just because your furnace cycles on and off doesn't mean it’s running efficiently. A system that's underperforming can drive up energy costs and strain key components. Identifying and addressing issues early can help you avoid more serious damage—and the potential cost of a full furnace replacement.

How to Avoid Furnace Problems

Avoiding furnace problems largely comes down to regular maintenance, smart usage habits, and prompt attention to warning signs. Here’s a practical guide to help you keep your furnace running smoothly and efficiently:

1. Schedule Regular MaintenanceHave your furnace professionally inspected and tuned up once a year, ideally before the heating season—but anytime is better than never.

   A technician will clean components, check for wear, test safety systems, and ensure everything is running efficiently.

2. Change or Clean the Air FilterCheck monthly and replace every 1–3 months, or as recommended by the manufacturer.

   A dirty filter restricts airflow, forces the furnace to work harder, and can lead to overheating or premature failure.

3. Keep Vents and Registers ClearDon’t block supply or return vents with furniture, rugs, or curtains.

   Good airflow helps maintain even heating and reduces strain on your system.

4. Listen and Watch for Warning SignsUnusual noises, frequent cycling, uneven heating, or a spike in energy bills could all signal a problem.

   Address issues early to avoid more costly repairs down the road.

5. Install and Check Carbon Monoxide DetectorsEspecially important if you have a gas furnace.

   Test detectors monthly and replace batteries regularly.

6. Keep the Area Around the Furnace CleanDon’t store flammable items nearby.

   Give the furnace room to "breathe" and allow easy access for maintenance.

7. Use a Programmable or Smart ThermostatAvoid overworking your furnace by keeping temperatures consistent.

   Set back the temperature on your thermostat slightly when you’re asleep or away to reduce wear and energy use.

8. Seal Air Leaks in Your HomeDrafty windows and doors force your furnace to work harder.

   Add weatherstripping, insulation, or seal ductwork to reduce strain and maintain comfort.

Call Our Professionals for Furnace Repair Today

When your furnace in your Missoula, MT, home has a problem, contact Design Air right away. Our licensed HVAC repair professionals will get your heating equipment operating at peak capacity as soon as possible or offer you another solution. Call or text us at 406-251-7997 or request service online.