Furnace Repair in Farmington
Get fast, fair pricing from licensed local pros. Typical Farmington cost: $60 – $200 installed.
- Flame sensor
- $60 – $200
- Igniter
- $125 – $350
- Blower motor
- $300 – $1.1k
- Control board
- $225 – $600
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Furnace repair cost by part.
Typical Farmington repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
Furnace repair costs in Farmington, Missouri, typically range from $60 for a simple flame sensor replacement to over $2,700 for a heat exchanger. With a median home age of 43 years, older furnaces often need more frequent repairs. Farmington's mixed-humid climate means gas furnaces are common, and repair needs spike during cold snaps. Missouri has no statewide mechanical code, so permit requirements are set locally—check with the city or county before work begins. Labor rates reflect the local median income of $49,317, and a diagnostic fee of $60–$150 is standard.
- Diagnostic / service callOften credited toward the repair$60 – $150
- Flame sensor or thermocoupleCommon no-heat cause on gas units$60 – $200
- Hot-surface igniterFurnace clicks but won’t light$125 – $350
- Blower motorNo airflow / weak airflow$300 – $1,150
- Heat exchangerCracked exchanger often means replace$1,150 – $2,700+
* 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 Farmington
U.S. Census ACS- Households
- 7,144
- Homeowners
- 3,313
- 48% own
- Median home value
- $168,400
- Median income
- $49,317
- Median home built
- 1983
- Housing units
- 6,972
With a median home built in 1983, many Farmington 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 Farmington.
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 Farmington
Given Missouri’s mixed-humid climate and gas heating, high-seer2 ac + gas furnace is the sensible default for most Farmington homes. A pro can confirm the right size and system for your home with a load calculation.
Sources: Ameren Missouri Heating and Cooling / HVAC rebates · SEER2 North Region efficiency standards
What Farmington code requires
Installing or replacing an HVAC system in Farmington follows Missouri 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 minimum13.4 SEER2 (North)
Federal North-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—
Missouri has no statewide residential building/mechanical code, so permit and inspection requirements are set locally by each city or county.
Sources: Ameren Missouri Heating and Cooling / HVAC rebates · SEER2 North Region efficiency standards
Not sure which rules and rebates apply to your home?
A licensed Farmington pro will walk you through code, the right unit, and what you can claim back — in one quick call.
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Money back in Farmington
Missouri heating is mostly gas, which shapes the money back:
- StateUp to $2,000 per qualifying air-source heat pump (up to $1,000 central AC, up to $500/ton mini-split)Ameren Missouri PAYS (Pay As You Save) air-source heat pump rebate →
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.
- Federal30% of cost, up to $600Federal 25C tax credit — central AC →
For a qualifying high-efficiency central air conditioner.
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 Missouri.
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 Farmington, explained.
What affects repair costs in Farmington?
Repair costs vary by the part needed and labor time. Older homes (median built 1983) may have outdated systems that are harder to service. Permits, if required by Farmington or St. Francois County, add to the cost. The type of system—gas furnace versus heat pump—also influences pricing. Seasonal demand can affect availability, but prices remain competitive in this smaller market.
Common furnace repairs in Farmington
Flame sensor failure
A dirty or faulty flame sensor is a frequent issue, causing the furnace to cycle on and off. Repair costs $60–$200.
Igniter problems
A worn igniter prevents the furnace from lighting. Replacement runs $125–$350, common in older systems.
Blower motor malfunction
A failing blower motor reduces airflow. Repair costs $300–$1,150, often needed in homes with heavy dust or age.
Furnace Repair FAQs — Farmington
Permit requirements are set locally. Check with the City of Farmington or St. Francois County; many repairs like sensor or igniter replacement may not need one, but major work like heat exchanger replacement likely does.
Furnace Repair near Farmington
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