A furnace that won't light or keeps shutting off needs real diagnosis, not another reset. A CO check happens on every call, standard, not an upsell.
A short list of components causes most Furnace Repair calls: ignitor, flame sensor, gas valve, heat exchanger. Each gets tested with a multimeter and combustion analyzer, not replaced on a hunch, not parts-cannon guessing.
What doesn't change from visit to visit.
Every repair includes a CO check, not optional.
No-heat calls in Lathrop get priority routing over routine work during cold snaps when it's cold.
A fixed price is set before repairs start.
Both fuel types get the same trained tech, no exceptions.
The most common furnace failure points.
Cracked ignitors and carbon-fouled sensors cause a large share of no-heat calls, usually a same-visit fix.
Gas valve testing confirms the fault before we recommend replacing it.
We inspect carefully with proper equipment rather than assuming based on age.
We test both before condemning the control board.
We still service older standing-pilot systems that newer ignition doesn't have.
Zero response from the furnace can mean a wiring fault, not a furnace failure to avoid overcharging for parts you don't need.
What happens from your call to heat restored.
Describe the symptom and we route the nearest tech and we'll get someone moving.
Truck arrives stocked with common ignitor, flame sensor, and control parts ready to diagnose and often repair same visit.
Safety and diagnostic checks come first, then a flat-rate quote.
We re-check CO before signing off, backed by warranty.
Recent reviews from winter heating calls.
Pilot light kept going out on our older furnace every few days. Tech identified a failing thermocouple that two other companies had overlooked.
— H. Delacroix, homeowner
Furnace made a loud bang on startup that scared the whole family. Turned out to be a delayed ignition issue from a dirty burner, cleaned and resolved same visit.
— F. Ibekwe, homeowner
Called about a gas smell near the furnace closet and they had someone here within the hour to confirm it was safe before doing any repair work.
— Q. Whitmore, homeowner
Landlord here with an older building, they've kept three separate furnace units running through two winters without a single emergency callout.
— Z. Andreou, landlord
What Lathrop customers ask most.
Clicking without ignition often points to the ignitor, but we confirm with a resistance test before quoting.
It's a real safety concern, taken seriously.
A CO check is standard on every call, no upcharge.
We still service these older systems.
We prioritize no-heat situations even during high demand.
Uncommon parts might mean a follow-up visit to finish the repair.
Our furnace repair coverage spans Lathrop and nearby Lathrop, CA zips below — call to confirm.
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