A furnace that won't start at all during Houston's first cold snap is one of our most common winter calls — often traceable to a few specific causes.
Active units staged across Houston, Katy, Sugar Land & The Woodlands.
A few things worth checking first.
Furnaces have a light-switch-style disconnect near the unit, often mistaken for a regular wall switch, that's sometimes bumped off accidentally during nearby storage or cleaning.
| HVAC Services Houston, TX | Industry Average |
|---|---|
| Free diagnostic with any repair | $89–$150 diagnostic fee |
| Live line answered 24/7 | Voicemail after 6pm |
| ~35-min average dispatch | 2–4 hour arrival windows |
| Written price before repair starts | Verbal quote, surprise total |
| NATE-certified technicians | No certification requirement |
| 1-year written repair warranty | 30-day or no warranty |
Every technician holds NATE certification and Texas TACLB licensing before ever stepping on your property.
Live tech walks you through breaker and thermostat checks while a truck is routed.
Refrigerant pressure, electrical, and airflow tested — not a guess.
You approve a flat, itemized price before any part is touched.
Most repairs completed same-visit from a fully stocked truck.
We confirm supply-air temperature drop before we leave.
Fast diagnostics for warm air, no cooling, and dead systems.
SIZED RIGHTLoad-calculated systems, not oversold tonnage.
SEASONALTune-ups that catch failures before peak summer.
WINTER READYFurnace and heat pump service for cold fronts.
Nights, weekends, and holiday dispatch.
Sealing and repair for even cooling and lower bills.
AIR QUALITYPurifiers and humidity control for cleaner indoor air.
COMMERCIALRooftop units and multi-zone systems for facilities.
Cost depends on the actual cause found during diagnosis.
Ignitor, flame sensor, or thermostat-level issues.
Control board or gas valve component issues.
Heat exchanger or major electrical component failure.
Systems sitting unused for 8+ months reveal wear on first startup.
Dust accumulation during the off-season is a leading ignition failure cause.
A dirty filter restricting airflow can trigger a safety shutoff.
Older systems with standing pilots can have issues after months unused.
"AC died at 9pm in July. Tech was at our door in 30 minutes and had it running again within the hour."
"Gave us the price upfront, no surprise charges. Compressor was clearly explained before they touched it."
"Called three companies at 11pm — only one picked up. Real technician walked me through safety steps."
Nine out of ten no-start calls come down to one of these five causes. Our technicians check them in order, so the diagnosis is usually made within minutes of arrival.
Dead batteries, a setting still on cool, or a thermostat that lost its program over the summer. This is the most common cause and the easiest to fix.
A tripped breaker, a blown fuse, or the furnace switch accidentally turned off during summer cleaning. We check the panel and the furnace disconnect first.
The ignitor is a wear part. After a long idle summer it often cracks or burns out on the first cold start of the season, and the furnace will not light without it.
The furnace lights, then shuts off within seconds. The flame sensor is dirty or failed, so the control board cuts the gas as a safety measure.
There are a few checks any homeowner can do safely while waiting for a technician. They take five minutes and they solve the problem often enough that we always walk callers through them on the phone.
If any check involves gas, a burning smell, or opening the furnace cabinet beyond the filter door, stop and wait for the technician. Some things are not worth the risk to save twenty minutes.
Same-day heating and AC service across the Houston metro, 24/7. If you are inside the loop or out in the suburbs, a stocked truck is already nearby.
We dispatch across Houston, TX, including ZIP codes 77002, 77003, 77004, 77005, 77006, 77007, 77008, 77009, 77019, 77027, 77056, 77057, 77063, 77077, 77079, 77080, 77081, 77082, 77084, 77090, 77095, 77098, 77099. Call (281) 549-0799 and we will route the nearest available technician to your door.
Systems unused for months often reveal ignitor, sensor, or airflow issues that only show up on startup.
This usually indicates the ignition system is trying but failing — worth a diagnostic rather than repeated attempts.
Repeated restart attempts, especially on gas furnaces, aren't recommended — a few tries is fine, but persistent failure needs a technician.
We prioritize no-heat calls with the same rapid dispatch as AC emergencies.
Many furnace components have manufacturer warranties — we check this before quoting repair costs.
Same-day dispatch open now across Houston, TX.
Talk to a live technician now — ~35-min dispatch, free diagnostic with repair. No overtime fees, nights & weekends.
Call (281) 549-0799