Furnace Repair in Katy
Get fast, fair pricing from licensed local pros. Typical Katy cost: $75 – $225 installed.
- Flame sensor
- $75 – $225
- Igniter
- $150 – $425
- Blower motor
- $375 – $1.4k
- Control board
- $275 – $750
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Furnace repair cost by part.
Typical Katy repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
In Katy, Texas, furnace repair costs typically range from $75 for a simple flame sensor replacement to over $3,300 for a heat exchanger. Labor and parts vary, with a diagnostic fee of $70–$175. Most homes were built around 2003, so systems are about 23 years old and may need repairs. Texas requires a TDLR-licensed contractor to pull a mechanical permit for any furnace work. Given the hot-humid climate and high cooling demand, a heat pump is often recommended for efficient year-round comfort. The federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump) can offset upgrade costs.
- Diagnostic / service callOften credited toward the repair$70 – $175
- Flame sensor or thermocoupleCommon no-heat cause on gas units$75 – $225
- Hot-surface igniterFurnace clicks but won’t light$150 – $425
- Blower motorNo airflow / weak airflow$375 – $1,400
- Heat exchangerCracked exchanger often means replace$1,400 – $3,300+
* 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 Katy
U.S. Census ACS- Households
- 9,130
- Homeowners
- 5,552
- 72% own
- Median home value
- $359,800
- Median income
- $114,917
- Median home built
- 2003
- Housing units
- 7,698
With a median home built in 2003, many Katy 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 Katy.
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.
Recommended unit for Katy
Given Texas’s hot-humid climate and mixed heating, high-seer2 heat pump is the sensible default for most Katy homes. With a long, hard cooling season here, stepping up the SEER2 tier pays back through lower summer bills. A pro can confirm the right size and system for your home with a load calculation.
Sources: SEER2 Southeast region standards (Texas) · Texas heat pump rebates by utility 2026 · Texas HVAC permit requirements
What Katy code requires
Installing or replacing an HVAC system in Katy follows Texas rules under the state mechanical code. Here’s what applies statewide:
- PermitRequired
Mechanical permit pulled by your licensed HVAC contractor; covers equipment, refrigerant, and the electrical disconnect.
- SEER2 minimum14.3 SEER2 (Southeast, <45k BTU)
Federal Southeast-region minimum for new split-system AC. Higher tiers cut bills and unlock rebates.
- Load calculationRecommended
Sizing by load calc — not rule of thumb — prevents an oversized unit that short-cycles and never dehumidifies.
- RefrigerantR-454B / R-32 (R-410A phased down 2025+)
- Good to know—
HVAC work must be done by a TDLR-licensed Air Conditioning & Refrigeration contractor, and the licensed contractor (not the homeowner) pulls the required mechanical permit.
Sources: SEER2 Southeast region standards (Texas) · Texas heat pump rebates by utility 2026 · Texas HVAC permit requirements
Not sure which rules and rebates apply to your home?
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Money back in Katy
Texas heating is mostly mixed, which shapes the money back:
- Stateup to ~$3,000 (ENERGY STAR heat pump, participating contractor)Austin Energy Home Energy Improvement / Power Saver heat pump rebate →
State or utility program — verify eligibility before you buy.
- Stateapprox $100-$275 per tonCPS Energy heat pump / high-efficiency AC rebate (SEER2 15.2+) →
State or utility program — verify eligibility before you buy.
- Stateup to ~$600 (ENERGY STAR equipment, licensed contractor)Oncor Take a Load Off Texas energy efficiency program →
State or utility program — verify eligibility before you buy.
- Federal30% of cost, up to $2,000Federal 25C tax credit — heat pump →
For a qualifying ENERGY STAR heat pump meeting the CEE efficiency tier. Claimed on your federal return.
The federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump and up to $600 for a high-efficiency central AC) applies in every state, including Texas.
Comfort back in three steps.
- 1
Tell us what’s wrong
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- 2
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- 3
Repair or replace, fast
Your pro confirms the price on-site and gets your comfort back. Most jobs done in a few hours.
Furnace Repair in Katy, explained.
What Affects Furnace Repair Costs in Katy
Prices vary by the part needing replacement: flame sensor ($75–$225), igniter ($150–$425), blower motor ($375–$1,400), control board ($275–$750), or heat exchanger ($1,400–$3,300+). Labor rates reflect the licensed contractor's overhead and permit fees. Older systems (typical 23-year-old home) may require more extensive repairs. The hot-humid climate means furnaces run less than ACs, but repair urgency can increase costs during cold snaps.
Common Furnace Repairs in Katy
Flame Sensor Failure
A dirty or faulty flame sensor prevents ignition. Cleaning or replacement costs $75–$225.
Igniter Problems
A cracked or worn igniter won't light the gas. Replacement runs $150–$425.
Blower Motor Malfunction
The blower motor may fail due to age or overheating. Replacement costs $375–$1,400.
Furnace Repair FAQs — Katy
Yes, Texas requires a mechanical permit for any furnace repair or replacement. Your licensed TDLR contractor must pull the permit.
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