Furnace Repair in New Braunfels, TX
Natural gas and electric furnace diagnosis and repair. Ignition issues, flame sensor cleaning, thermocouple replacement, blower motor service. Hill Country cold snaps don't wait.
What Furnace Repair Covers
Most furnace calls in New Braunfels happen during the brief winter cold snaps when overnight temperatures drop below freezing — usually December through February. Won't ignite is the most common complaint: typically a dirty flame sensor (5-minute fix), failed igniter (cheap part), pilot light out on older units, or a failed inducer motor. Ignites then shuts off after a few seconds is almost always a dirty flame sensor or a flue/venting restriction. Blows cold air means the burner isn't lighting at all — control board, gas valve, or thermostat issues.
Diagnostic starts at the thermostat, moves to the furnace itself: check filter, inspect heat exchanger for cracks (critical safety check on gas units), test ignition components, verify gas pressure, run combustion analysis to confirm safe operating range. Most repairs are same-visit. Heat-exchanger cracks always mean replacement — the safety risk from CO infiltration is non-negotiable.
Pricing varies by component. Flame sensor cleaning is one of the cheapest service calls; igniter or thermocouple replacement is inexpensive; blower motor or control board replacements are larger jobs. All quoted in writing before work begins.
Furnace Safety in New Braunfels
Texas mechanical code requires combustion analysis on every gas-furnace repair. Heat exchanger cracks, blocked flue pipes, or bad draft can push carbon monoxide into the home — most common cause of CO incidents in the Hill Country is a furnace that hasn't been serviced in 5+ years.
Every home with gas appliances should have CO detectors on each floor and in bedrooms. If a CO detector sounds, evacuate, call the gas company (or 911 for serious symptoms), then call an HVAC technician for diagnosis and repair.
Furnace Repair Near You
Furnace Repair FAQ
Most common: dirty flame sensor (cheap, 15-minute fix), failed igniter, dirty filter restricting airflow, or thermostat wired incorrectly after a smart-thermostat upgrade. Less commonly: gas supply issue, failed control board, or pilot light out on older units.
Gas furnaces last 15-20 years with regular maintenance — even longer in mild Hill Country climates that don't run heating as heavily as northern regions. Electric furnaces and heat pumps last similar timeframes. Annual inspections extend life significantly.
Short-cycling (turns on, runs briefly, turns off, repeats) is usually overheating — caused by dirty filter, blocked vents, or a failing limit switch. Less commonly an oversized furnace that satisfies the thermostat too quickly. All diagnosable in a single visit.
Yes, but the risk is manageable. Every Texas home with gas appliances should have CO detectors. Annual furnace inspections catch the conditions (cracked heat exchanger, blocked flue, bad draft) that can cause CO buildup. If a CO alarm sounds, evacuate and call from outside.
Related Services
Furnace Down in New Braunfels?
Same-day service during cold snaps. 24/7 dispatch for emergencies.