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Furnace Repair in Texas: 2026 Cost & Top Companies

Furnaces in Texas live a strange life: nine months of silence, then a hard workout during winter cold snaps. That pattern — long idle periods followed by sudden demand — is exactly why ignitors fail, flame sensors foul and blower motors seize right when you need heat most. Here is what furnace repair costs in 2026 and who to call.

How much does furnace repair cost in Texas?

ServiceTypical cost (2026)Notes
Diagnostic / service call$75 – $150Usually waived with repair
Flame sensor cleaning/replacement$80 – $250Most common no-heat cause
Ignitor replacement$150 – $300Hot surface ignitors wear out
Thermostat replacement$120 – $350Smart models cost more
Gas valve replacement$250 – $600Safety-critical part
Control board$300 – $650The furnace “brain”
Blower motor$400 – $800Variable-speed costs more
Heat exchanger$1,000 – $2,500Often triggers replace discussion

2026 Texas residential ranges, parts and labor included. Gas furnace work should always be done by a licensed contractor.

Common furnace problems in Texas

If your system is a heat pump rather than a gas furnace — increasingly common in new Texas construction — the repair landscape is different; most “no heat” calls on heat pumps trace to the reversing valve or defrost board. The companies below service both.

Top furnace repair companies in Texas

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Frequently asked questions

Why does my furnace smell when I first turn it on?

A brief dusty-burning smell on the first run of the season is normal — it is dust burning off the heat exchanger after months of sitting idle (a long Texas off-season makes this more noticeable). It should clear within an hour. A persistent smell, or any odor of gas, means shut it down and call a pro.

My furnace won’t ignite. What is the most likely cause?

In our climate the top three are a dirty flame sensor, a failed hot-surface ignitor, or a tripped safety switch. All three are sub-$300 repairs in most cases. Check the filter and thermostat batteries first — both are free fixes.

Is furnace repair urgent in Texas?

Usually less urgent than AC failure — but Texas freeze events (like February 2021) show why a working furnace matters. Do not wait for a cold snap: schedule repair in the fall when appointments are same-week and off-season pricing applies.

Repair or replace a 15-year-old furnace?

If the heat exchanger is cracked or the repair tops $800 on a 15+ year unit, replacement math usually favors a new system. See our HVAC replacement cost guide for 2026 numbers.

Do I need a carbon monoxide detector with a gas furnace?

Yes. Every Texas home with gas appliances should have CO detectors on each floor, and the furnace should get an annual combustion check. A cracked heat exchanger can leak CO without any visible symptoms.

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