From the hallway, a furnace that will not heat looks the same no matter what broke. Inside the cabinet, though, everything happens in a strict order: inducer on, pressure switch closed, igniter glowing, gas valve open, burners lit, flame proven, and finally the blower sending heat through the house. Most of the diagnosis comes down to finding the broken link. In Kent homes, it tends to be the same handful of culprits: a flame sensor coated in oxide, a hot surface igniter cracked by thermal cycling, a pressure switch held open by a tired inducer or a plugged condensate trap, or a control board with a burned relay.
Kent HVAC repairs furnaces by testing the sequence, not guessing at it. Our experienced technicians watch the startup step by step and measure at each stage: igniter resistance, flame signal in microamps, pressure switch operation against actual inducer draft, gas valve voltage, and blower and capacitor health. Every visit includes the safety fundamentals on a fuel-burning appliance: heat exchanger inspection, leak-testing of gas connections, and flue draft verification, because the difference between a furnace problem and a furnace hazard is not visible from the thermostat. We measure temperature rise against the data plate before we leave so the fire and the airflow are matched the way the manufacturer intended.
Conventional or condensing, gas, propane, or electric, we repair them all, across every major brand, including the traps, drains, and dual pressure switches that come with high-efficiency models. The parts most likely to fail are stocked on every truck: igniters, flame sensors, pressure switches, capacitors, inducer assemblies, and blower motors. That is why the majority of no-heat calls end the same visit. If your furnace is down anywhere in Kent, call (253) 660-4929 and we will get the burners lit today.
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How Much Does Furnace Repair Cost in Kent?
For most Kent homes, a furnace repair runs $150 to $600. The price depends on which part failed and how old the furnace is. You'll get a written, upfront price from Kent HVAC after we diagnose the problem.
| Repair | Typical cost | What it usually means |
|---|---|---|
| Flame sensor cleaning or replacementFurnace lights, then shuts off within seconds | $80–$250 | Furnace lights, then shuts off within seconds |
| Hot surface igniter replacementFurnace clicks and tries to start but never lights | $150–$400 | Furnace clicks and tries to start but never lights |
| Draft inducer motorLoud humming or grinding at startup, then lockout | $400–$1,000 | Loud humming or grinding at startup, then lockout |
| Blower motorNo airflow, or the blower runs nonstop | $400–$1,500 | No airflow, or the blower runs nonstop |
| Control boardFurnace won't respond to the thermostat | $300–$700 | Erratic behavior, error codes, or no response at all |
| Gas valve replacementValve fails to open, so the furnace never lights | $250–$700 | Valve fails to open, so the furnace never lights |
These are common price ranges, not quotes. We confirm the exact price after diagnosing your system.
What Affects the Price
- The age and efficiency of the furnace, since high-efficiency models use more specialized parts
- Whether a cracked heat exchanger is found, which usually means replacement rather than repair
- Timing, such as a no-heat call on a cold night versus a scheduled repair
- How easy the furnace is to reach
For older furnaces facing a big repair, we'll show you what replacement would cost too, so you can compare. Call (253) 660-4929 for a quote.
Warning Signs for Furnace Repair
Catching these issues early helps you avoid costly problems and protect your property. Here are the most common indicators that it's time to call a professional:
- A fan that keeps running while the registers blow cool air
- Rust streaks, soot, or water around the cabinet or flue
- The furnace clicks and glows but the burners never light
- Booming or banging at light-off from delayed ignition
- Squealing or grinding from the blower compartment
- Frequent on-off cycling that never reaches the thermostat setting
- Repeated shutdowns just seconds after the burners light
- Yellow, wavering burner flames where they should be sharp blue
Act Before It Gets Worse
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. At the first hint of a problem, reach out to Kent HVAC at (253) 660-4929 for a fast inspection.
Furnace Repair Issues? We Can Help.
Call Kent HVAC for fast, reliable service.
Call (253) 660-4929 TodayFurnace Repair FAQ
The Benefits of Professional Furnace Repair
Gas, open flame, high voltage, and a flue all share one cabinet in a furnace, and the most dangerous failure is the one you cannot see: a damaged heat exchanger that lets combustion gases into the air the blower sends through your home. Every morning that delayed ignition keeps booming at startup, that exchanger takes more stress. The diagnostic side has its own pitfalls. When a furnace trips its high limit, the switch itself may be bad, or the furnace may be protecting itself from a clogged filter or a failing blower. Replacing the switch when the real issue is airflow removes a safety device and leaves the actual problem in place.
Our techs look at every symptom in the context of the whole furnace. We measure flame signal instead of assuming it, which keeps us from replacing a healthy sensor while a cracked igniter or weak gas valve goes unnoticed. Draft is confirmed at the pressure switch and at the flue. Temperature rise is checked against the data plate, so airflow issues are caught before they cut years off the heat exchanger. The gas side is leak-tested with instruments, never with a quick sniff. The result is a furnace proven safe over a full cycle, plus an honest opinion if the unit is getting close to the point where replacing it beats repairing it again.
How Our Furnace Repair Works
Our systematic workflow delivers thorough, lasting results on every job. Here's a look at each step our Kent HVAC team takes:
Step-by-Step Diagnosis
Instead of guessing, we follow the startup sequence step by step, with readings on the inducer, pressure switch, igniter, flame sensor, and gas valve, until the broken link shows itself.
Safety Inspection
Safety is part of every repair: heat exchanger inspection, instrument leak testing on the gas side, and flue draft verification, because a furnace that runs is not the same as a furnace that runs safely.
Targeted Repair
Igniters, flame sensors, pressure switches, capacitors, and motors ride on the truck, so most furnaces are lit and heating again before we pack up.
Complete Verification
We run complete cycles, measure temperature rise against the data plate, confirm clean ignition without booming, and verify every limit and safety control before we leave.
Questions About Furnace Repair?
We provide honest advice and upfront pricing on all furnace repair work.
Call (253) 660-4929 NowHow to Prevent Furnace Repair Problems
A few simple habits now, like regular filter changes and seasonal tune-ups, can add years to your system's life. Follow these tips from our experienced technicians:
- Have the furnace checked every autumn, while a weak igniter or fouled sensor is still an easy fix
- Keep a working carbon monoxide alarm on every level of the home and check it each month
- On high-efficiency models, keep the condensate trap and drain line clear and draining
- Make sure the furnace has clear combustion air; a packed utility room starves the burners
- Put in a fresh filter monthly through the heating season, the cheapest protection your furnace can get
- Notice how the furnace sounds at startup, because a quiet light-off is healthy and a boom is not
- Clear boxes, lint, and above all chlorine-based cleaners out of the furnace area
Comparing DIY and Professional Furnace Repair
Some simple checks are suitable for DIY, but most heating and cooling repairs benefit from professional tools, training, and experience. Here's a comparison:
| Factor | DIY Attempt | Professional Service |
|---|---|---|
| Exchanger Cracks | Cracks invisible from the outside | Examined as standard on each call |
| Ignition Faults | Guesswork based on blink codes | Igniter, sensor, and valve each metered |
| Gas Safety | Connections judged by smell | Every fitting checked with a detector |
| Limit Trips | Safety switch bypassed or swapped | Filter, blower, and ducts checked for the cause |
| Blower Setup | Blower speed left wherever it was | Rise measured and blower adjusted |
| Verification | Declared fixed after one flame | Complete cycles tested before we leave |
Get Furnace Repair Help Today
Don't let a failing system get worse. Call Kent HVAC now for prompt, professional service.
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