Furnace Repair in Kingman, Prescott and Prescott Valley

Cold season is here

Kingman sits at about 3,300 feet, and freezing nights are normal from late fall into early spring. Up the hill, Prescott and Prescott Valley sit above 5,000 feet, where winter brings snow on the roof and nights well below freezing. A furnace that sat idle from April to November gets asked to run hard overnight, and that first cold week is when worn igniters, dirty flame sensors and tired inducer motors give out.

This page is about gas and propane furnaces. If you heat with a heat pump or a mini-split, see heating repair, which covers every kind of heating system we work on.

How a furnace starts, and where it fails

A modern gas furnace runs the same safety sequence every time the thermostat calls for heat. Knowing where in that sequence it stops tells us most of what is wrong:

1. Inducer motor starts to pull combustion gases out through the vent. If it hums, squeals or never starts, nothing else happens.
2. Pressure switch closes to prove the vent is clear. A blocked flue, a cracked hose, a clogged condensate trap on a high-efficiency furnace or a weak inducer keeps it open, and the furnace stops here.
3. Igniter glows (or a spark igniter fires). A cracked hot surface igniter is one of the most common no-heat parts.
4. Gas valve opens and the burners light.
5. Flame sensor proves the flame. If it is dirty, the board does not see the flame and shuts the gas off after a few seconds. This is the classic "lights, then goes out" complaint.
6. Blower starts and pushes warm air through the house. If the limit switch senses the furnace running too hot, usually from a clogged filter or a dirty blower, it shuts the burners off.

The control board usually flashes a code that points at the failing step, and we confirm it with a meter, and with a thermal camera when temperatures tell the story. Then you see what we found and get the repair price before any work starts.

Furnace problems we fix

That burning smell on the first cold night

The first time the heat runs each fall, most furnaces give off a dusty burning smell for a few minutes. That is normal: dust that settled on the burners and heat exchanger over the summer is burning off. Open a window and it should fade within the hour. A smell that hangs on, an electrical or melting-plastic smell, or smoke is a reason to shut the furnace off and call us. A rotten-egg smell means gas: get out first, then call. More in furnace burning smell in Prescott: what is normal.

Gas, propane and altitude

Furnaces are built to burn right at sea level. At Kingman's elevation, and even more so in Prescott, Prescott Valley, Chino Valley and Seligman, there is less oxygen in the air, and a furnace that has not been set up for altitude can burn rich, soot up and make more carbon monoxide. We check the gas pressure and orifices against the manufacturer's altitude derate on every furnace we work on. Propane furnaces need their own orifices and settings, and we check those too, which matters in Golden Valley, Chino Valley and the rural parts of both counties where propane is common.

Manufactured home furnaces

Manufactured homes use their own kind of furnace: a downflow unit, usually in a hallway closet, that pushes heat down into ducts under the floor and pulls combustion air from outside rather than from the house. They are built and listed for manufactured housing, and a replacement has to be one too. We work on them all the time in Golden Valley, Kingman and the river towns, along with the crossover and belly ducts underneath that are often the real reason a back bedroom stays cold.

Furnace repair in Kingman

Kingman homes heat with a mix of gas furnaces, propane furnaces, heat pumps and package units, and plenty of attic furnaces that only get looked at when they quit. Cold mornings and windy, dusty springs mean dirty flame sensors, clogged filters and limit switch trips are the calls we see most. See HVAC service in Kingman, and read winter thermostat settings for Kingman to keep the bill down once it is running.

Furnace repair in Prescott and Prescott Valley

In Prescott and Prescott Valley the furnace is the main event from fall through spring. Longer run times mean more wear on inducers, igniters and blowers, and older homes in Prescott often have furnaces that have been running for decades. We give you an honest arrival window for the Prescott side of Yavapai County. See Prescott and Prescott Valley.

Stay off the no-heat list

Most winter breakdowns start as something a fall check would have caught: a flame sensor getting dirty, an igniter starting to crack, a blower wheel caked with dust. Our seasonal tune-up is $69 (normally $79) through December 31, 2026, and it covers the burners, flame sensor, igniter, safeties, venting and a heat exchanger inspection. If you would rather have it handled twice a year, our maintenance plans cover a fall heat check and a spring cooling check with a written condition report each time. Here is what a fall furnace tune-up covers.

When replacement makes sense

Most furnace calls end in a repair. But if your furnace is past about 15 to 20 years, has a cracked heat exchanger, or has needed a repair every winter, we will price a replacement next to the repair so you can compare both. Replacements are Trane furnaces, and we are a Trane Comfort Specialist, sized on a Manual J load calculation with three options side by side. Financing is available on approved credit. See furnace and heat pump replacement.

What customers say

Furnace repair questions we get asked

Where we repair furnaces