Furnace repair

Can be an emergency: see the read below

A furnace blowing cold air is most often the thermostat fan set to ON, a clogged filter or a dirty flame sensor. No heat in freezing weather is urgent; a gas smell or a carbon monoxide alarm means leave the building and call 911.

Drop a photo Start with the problem

Show us the furnace.

Snap a photo — see what it is, how urgent, who to call. One photo of the problem. fixRAgent reads it and gives you a Triage Profile.

Photo of a gas furnace with its front panels off, burners and control board showing — A real Triage Profile from this photo, read by fixRAgent on 9 Oct 2026. Open it ›

Take the photo. We’ll tell you what it is. Drop a photo Or drag it here. The Triage Profile opens right here, on this page.

Choose a photo you already have

Or start with a sentence

What’s happening, in your words

AR Logic LLC · Privacy · Managing this for someone else? There is a version of this for whole portfolios. Managers: set it up for your buildings →

Start with the problem

Every furnace problem, by brand

Furnace leaking waterUsually urgent, and it can be an emergency

Is it an emergency? Usually urgent, and it can be an emergency. Turn off the water to it and switch off its breaker, then soak up standing water. If water is reaching outlets or cords, switch off the breaker before touching anything; water coming through a ceiling is an emergency.

Amana Bosch Electrolux Frigidaire GE Haier Hotpoint Kenmore KitchenAid LG Maytag Samsung Sub-Zero Thermador Viking Whirlpool

Furnace not workingUsually not, but it can be

Is it an emergency? Usually not, but it can be. Because this can be an emergency, leave it off and get it checked; don't reset it or turn it back on. Stop and call a pro if it smells like burning, trips the breaker again, or runs on gas and you smell gas.

Amana Bosch Electrolux Frigidaire GE Haier Hotpoint Kenmore KitchenAid LG Maytag Samsung Sub-Zero Thermador Viking Whirlpool

Furnace won’t startUsually not, but it can be

Is it an emergency? Usually not, but it can be. Because this can be an emergency, leave it off and get it checked; don't reset it or turn it back on. Stop and call a pro if it keeps tripping the breaker, smells like burning, or you smell gas.

Amana Bosch Electrolux Frigidaire GE Haier Hotpoint Kenmore KitchenAid LG Maytag Samsung Sub-Zero Thermador Viking Whirlpool

Furnace making a loud noiseUsually not, but it can be

Is it an emergency? Usually not, but it can be. A new grinding, rattling or humming most often comes from a fan, motor, belt or loose panel. Stop using it and cut the power if the noise comes with a burning smell, smoke or sparks; if it runs on gas and you smell gas, leave and call the gas company or 911 from outside.

Amana Bosch Electrolux Frigidaire GE Haier Hotpoint Kenmore KitchenAid LG Maytag Samsung Sub-Zero Thermador Viking Whirlpool

Furnace smells like burningTreat it as urgent

Is it an emergency? Treat it as urgent. Turn it off and switch off its breaker, and do not use it again until the cause is found. If you see smoke or flames, or smell gas, get everyone out and call 911.

Amana Bosch Electrolux Frigidaire GE Haier Hotpoint Kenmore KitchenAid LG Maytag Samsung Sub-Zero Thermador Viking Whirlpool

Furnace flashing an error codeUsually not, but it can be

Is it an emergency? Usually not, but it can be — the code is the appliance reporting a fault it detected. Note the code. Because this can be an emergency, leave it off and get it checked; don't reset it or turn it back on. If the code returns with a burning smell, smoke or a leak, leave it off and call a pro.

Amana Bosch Electrolux Frigidaire GE Haier Hotpoint Kenmore KitchenAid LG Maytag Samsung Sub-Zero Thermador Viking Whirlpool