Furnace Repair in Houston
Get fast, fair pricing from licensed local pros. Typical Houston cost: $85 – $275 installed.
- Flame sensor
- $85 – $275
- Igniter
- $150 – $475
- Blower motor
- $425 – $1.6k
- Control board
- $325 – $850
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Furnace repair cost by part.
Typical Houston repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
In Houston, furnace repair costs vary based on the part and labor. Typical prices include flame sensor repair ($85–$275), igniter replacement ($150–$475), blower motor ($425–$1,600), control board ($325–$850), and heat exchanger ($1,600–$3,800+), plus a diagnostic fee of $80–$225. With many homes built around 1980, older furnaces may need more frequent repairs. Texas requires a TDLR-licensed contractor to pull a mechanical permit for HVAC work. Given Houston's hot-humid climate and mixed heating needs, a heat pump is often a well-suited system choice, and the federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump) can help offset costs.
- Diagnostic / service callOften credited toward the repair$80 – $225
- Flame sensor or thermocoupleCommon no-heat cause on gas units$85 – $275
- Hot-surface igniterFurnace clicks but won’t light$150 – $475
- Blower motorNo airflow / weak airflow$425 – $1,600
- Heat exchangerCracked exchanger often means replace$1,600 – $3,800+
* A cracked heat exchanger is a safety issue — on an older furnace, replacement is usually the call.
Pricing reviewed · Local data from U.S. Census ACS
HVAC systems in Houston
U.S. Census ACS- Households
- 918,501
- Homeowners
- 376,562
- 37% own
- Median home value
- $235,000
- Median income
- $60,440
- Median home built
- 1980
- Housing units
- 1,006,392
With a median home built in 1980, many Houston AC and furnace systems are at or past their 12–15 year lifespan — a common reason replacements spike here.
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What’s different about Houston.
Generic cost pages skip the things that actually decide your price and which system fits here — local code, climate, and the money you can claim back.
Climate & cooling load
Cooling-dominant and humid — the AC runs most of the year and humidity control matters as much as raw temperature. Winters are short and mild, with cheap natural gas heat.
Houston’s enemy isn’t just heat, it’s humidity. A variable-speed or two-stage system runs longer at lower output, which pulls far more moisture out of the air than a cheap single-stage unit that blasts cold and shuts off. Because natural gas is inexpensive here, many homes pair a high-SEER2 AC with a gas furnace rather than going all-electric heat pump.
Source: U.S. EIA — Texas energy data
Recommended unit for Houston
In hot, humid Houston the priority is moisture control, so a variable-speed or two-stage AC that runs long, low cycles is the practical pick — it keeps the house from feeling clammy in a way a cheap single-stage unit can’t. With cheap gas heat, pairing that AC with a gas furnace keeps winter costs down. A heat pump also runs well in the mild winters and earns the bigger federal credit if you’d rather go all-electric.
Source: U.S. EIA — Texas energy data
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What Houston code requires
Houston requires a mechanical permit and follows the International Residential/Mechanical Code. No seismic rules here — the details are driven by heat, humidity, and the area’s cheap natural gas:
- PermitRequired
Mechanical permit pulled by your TDLR-licensed HVAC contractor through the City of Houston permitting center.
- Manual J load calcRequired for sizing
In humid Houston an oversized unit cools the air but never wrings out the humidity — right-sizing is what keeps the house from feeling clammy.
- SEER2 minimum14.3 SEER2 (South region)
Federal South-region minimum for split-system AC; variable-speed higher-tier units handle humidity far better.
- RefrigerantR-454B / R-32 (2025+)
New systems use low-GWP refrigerant as R-410A is phased down.
- Condensate & drainSecondary drain / float switch
High humidity means heavy condensate — code expects a secondary drain or overflow float switch to prevent ceiling damage.
Sources: City of Houston — Permitting Center · DOE — 2023 SEER2 standards
Money back in Houston
Houston runs on low-cost natural gas, so the rebate path depends on whether you go heat pump or AC + gas furnace:
- UtilityvariesCenterPoint Energy efficiency rebates →
Rebates for qualifying high-efficiency cooling and heat-pump equipment installed by a participating contractor.
- Federal30% of cost, up to $2,000Federal 25C — heat pump →
For a qualifying ENERGY STAR heat pump.
- Federal30% of cost, up to $600Federal 25C — central AC →
For a qualifying high-efficiency central air conditioner.
A heat pump earns the larger $2,000 federal credit; a high-efficiency AC earns up to $600. Stack a utility rebate where available. Confirm current amounts before you buy.
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- 1
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- 2
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Furnace Repair in Houston, explained.
Why Furnace Repair Costs Vary in Houston
Repair costs depend on the part needed, labor rates, and whether a permit is required. Older homes (median built 1980) may have harder-to-access systems or outdated components. The diagnostic fee covers the technician's time to identify the issue. Using a licensed contractor ensures code compliance but may add to the cost. Rebates like the federal 25C credit can reduce net expenses for qualifying high-efficiency systems.
Common Furnace Issues in Houston
Flame Sensor Failure
A dirty or faulty flame sensor can cause the furnace to shut off after ignition. Cleaning or replacing it costs $85–$275.
Igniter Problems
A cracked or worn igniter prevents the furnace from lighting. Replacement runs $150–$475.
Blower Motor Malfunction
A failing blower motor reduces airflow. Repair or replacement costs $425–$1,600.
What to Expect During a Furnace Repair
A licensed technician will diagnose the issue, provide an upfront cost estimate, and perform the repair. For major work, they will pull a mechanical permit from the city. The job typically takes 1–4 hours, depending on the part. After repair, the system is tested to ensure proper operation.
Furnace Repair FAQs — Houston
Yes, Texas requires a mechanical permit for most HVAC repairs. Your licensed contractor will pull the permit and ensure the work meets local codes.
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