Heating
Furnace Repair
No heat, cold air, clicking with no flame or a blinking light on the board. We find the actual cause, explain it and price the fix before we do it.
Furnaces rarely fail at a convenient time. The good news is that many no-heat calls come down to a handful of parts: a dirty flame sensor, a failed igniter, a blocked condensate drain, a tripped pressure switch or a clogged filter that's caused the furnace to overheat and shut itself off. Kelvin Heating & Cooling diagnoses the problem properly, tells you what failed and why, and gives you the repair price before any work starts.
Common furnace problems we fix
- No heat or no ignition — igniters, flame sensors, gas valves, inducer motors and control boards.
- Short cycling — furnaces that start and stop every few minutes, often from overheating, a dirty filter or sensor issues.
- Blowing cold air — failed ignition, a tripped high-limit switch or a thermostat set to fan only.
- Noises and smells — squealing, banging or rattling blowers, and burning or electrical smells that need to be checked right away.
- Water around the furnace — blocked condensate lines, failed pumps or a leaking humidifier.
- Error codes — we read the board's fault history so the repair addresses the cause, not just the symptom.
What to check before you call
- Thermostat. Make sure it's set to heat, the set point is above room temperature and the batteries aren't dead.
- Power. Check the furnace switch (it often looks like a light switch) and the breaker.
- Filter. A badly clogged filter can shut a furnace down. Replace it if it's gray and caked.
- Vents outside. On high-efficiency furnaces, make sure the intake and exhaust pipes outside aren't blocked by snow or ice.
When a repair stops making sense
If the furnace is near the end of its expected life, needs an expensive part or has needed several repairs in a few years, we'll show you the replacement price next to the repair so you can decide with real numbers.
If you smell gas, leave the house and call your gas utility's emergency line from outside. If the furnace is old and repairs keep adding up, ask us about furnace replacement, or keep the next one away with annual maintenance.
What affects the cost of furnace repair
Furnace repair prices depend on what failed and how long it takes to diagnose. Cleaning a flame sensor or clearing a condensate line is a quick, modest job. Igniters, pressure switches and capacitors cost more, and inducer motors, control boards and gas valves more again. Blower motors, especially variable-speed ones, are among the most expensive parts. Parts availability for older or less common furnaces can affect both price and timing. We confirm the price in writing before starting.
Furnace Repair questions
Should I repair or replace my furnace?
If the furnace is younger and the repair is modest, repair usually makes sense. When it's older and needs an expensive part, compare the repair against a replacement. We'll show you both numbers.
Why does my furnace keep turning off?
Overheating from a dirty filter or blocked returns, a dirty flame sensor and condensate drain problems are the most common causes. The board's fault codes usually point the way.
Is a clicking furnace dangerous?
Clicking with no flame usually means an ignition problem. Turn the furnace off and have it checked rather than resetting it over and over.
Where we offer furnace repair
We provide furnace repair for homeowners in Novi, Troy and Canton. See what to expect in your area:
Comfort you don't have to think about.
See a ballpark for a new system in about a minute, or book a home visit for a written, itemized quote.