Won't Turn On in Cheney, WA

Cheney's housing stock tells part of the story here. The city has seen steady growth over the years - homes near the Eastern Washington University campus, along the Central Cheney Historic District, and out toward Fish Lake Regional Park and Turnbull National Wildlife Refuge. A significant portion of that housing was built 15 to 20 years ago, which means a lot of builder-grade furnaces are now hitting the end of their designed lifespan. Components that were adequate when new are now worn, corroded, or simply done.

Here are the most common root causes we find:

Thermostat or wiring failure. The furnace never receives the call for heat. This can be a dead thermostat, a wiring fault, or a tripped breaker on the thermostat circuit.

Tripped or failed safety switches. Furnaces have multiple safety devices - high-limit switches, rollout switches, pressure switches - that shut the system down when they detect an unsafe condition. A single tripped switch stops the entire startup sequence.

Pressure switch failure or blockage. The pressure switch confirms that the inducer motor (the fan that vents combustion gases) is running before allowing ignition. A cracked hose, a clogged port, or a failed switch diaphragm will stop the furnace cold. This is one of the most common failures we see in furnaces that are 10 or more years old.

Inducer motor failure. If the inducer motor won't spin up, the pressure switch never closes, and the furnace won't proceed past the first stage of startup. You may hear a brief hum or nothing at all.

Failed ignitor. The hot surface ignitor - a fragile ceramic element that glows red-hot to light the burners - can crack or burn out. The furnace will attempt a startup cycle, fail to ignite, and lock out after a set number of tries.

Control board failure. The control board is the brain of the furnace. It sequences every step of the startup process. When it fails, the furnace may show no signs of life at all, or it may get stuck partway through the startup sequence.

Gas valve failure. If the gas valve won't open, the ignitor fires but there's nothing to light. The furnace locks out after failed ignition attempts.

Clogged or dirty filter causing a safety lockout. A severely restricted filter causes the heat exchanger to overheat, tripping the high-limit switch. The furnace shuts down as a safety measure.

Before you call, run through these checks. They take five minutes and occasionally solve the problem.

• Check the thermostat. Make sure it's set to Heat, the temperature is set above the current room temperature, and the batteries aren't dead.
• Check the circuit breaker. Find the breaker labeled for the furnace or air handler and confirm it hasn't tripped. If it has, reset it once. If it trips again, stop - call us.
• Check the furnace power switch. There's usually a standard light-switch-style switch on or near the furnace. Make sure it's in the On position.
• Check the furnace filter. A filter so clogged it's collapsed can trigger a safety lockout. If it's visibly packed with debris, replace it and try resetting the furnace.
• Check the furnace door panel. Most furnaces have a safety interlock that cuts power if the access panel is not fully seated. Remove it and reinstall it firmly.
• Look for a fault code. Many furnaces have a small LED on the control board that blinks a fault code. Count the blinks and check the legend printed on the inside of the furnace door.

If none of these resolve the issue, it's time to call. Digging deeper without the right test equipment leads to guesswork - and guesswork costs you money.

After the diagnostic, we walk you through exactly what we found. We explain the root cause in plain language, give you your repair options, and let you decide how to proceed. No pressure.

Our goal is a safe, reliable fix - not a quick patch.

For most component failures on furnaces that are otherwise in good shape, repair is the right call. For older systems - especially builder-grade units that are 15 to 20 years old - we'll give you an honest assessment of whether repair makes long-term sense or whether replacement is worth considering. That's your call to make, not ours.

We're licensed, bonded, and insured in Idaho and Washington, and we back our work with a satisfaction guarantee.