Furnace Repair in Union
Get fast, fair pricing from licensed local pros. Typical Union cost: $70 – $200 installed.
- Flame sensor
- $70 – $200
- Igniter
- $125 – $375
- Blower motor
- $350 – $1.3k
- Control board
- $250 – $700
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Furnace repair cost by part.
Typical Union repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
Furnace repair in Union, Missouri, typically costs between $70 and $3,000+, depending on the part and labor. With a median home age of about 30 years, many furnaces are nearing or past their expected lifespan, making repairs common. Local diagnostic fees range from $65 to $175. Missouri does not have a statewide mechanical code, so Union sets its own permit and inspection rules; homeowners should verify requirements with the city before work begins. Most homes use gas heating, and the mixed-humid climate means moderate cooling demand. For system replacements, a gas furnace paired with a central AC is the recommended setup, and the federal 25C tax credit may offset costs for qualifying high-efficiency equipment.
- Diagnostic / service callOften credited toward the repair$65 – $175
- Flame sensor or thermocoupleCommon no-heat cause on gas units$70 – $200
- Hot-surface igniterFurnace clicks but won’t light$125 – $375
- Blower motorNo airflow / weak airflow$350 – $1,250
- Heat exchangerCracked exchanger often means replace$1,250 – $3,000+
* 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 Union
U.S. Census ACS- Households
- 4,936
- Homeowners
- 2,974
- 58% own
- Median home value
- $184,800
- Median income
- $68,864
- Median home built
- 1996
- Housing units
- 5,119
With a median home built in 1996, many Union 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 Union.
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 Union
Given Missouri’s mixed-humid climate and gas heating, high-seer2 ac + gas furnace is the sensible default for most Union 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 Union code requires
Installing or replacing an HVAC system in Union 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 Union 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 Union
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
Use the cost tool or call — takes 30 seconds. No cool air, no heat, or time for a new system.
- 2
Get matched with a local pro
We connect you with a licensed, insured HVAC technician near you — often the same day.
- 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 Union, explained.
What Drives Furnace Repair Costs in Union
Repair costs in Union vary mainly by the part needed—flame sensors are more affordable, while heat exchangers are expensive. Labor rates reflect local market conditions, and after-hours or emergency calls add to the bill. The age of your furnace (many are 30+ years old) can make repairs more complex. Permit fees, if required by Union, also add to the total. Seasonal demand may affect availability and pricing.
Common Furnace Repairs in Union
Igniter failure
A worn-out igniter prevents the furnace from lighting; replacement typically costs $125–$375.
Blower motor malfunction
A failing blower motor reduces airflow; repair or replacement runs $350–$1,250.
Heat exchanger crack
A cracked heat exchanger can leak carbon monoxide and requires replacement, costing $1,250–$3,000+.
Furnace Repair FAQs — Union
Missouri has no statewide code, so permit requirements are set by Union. Check with the city building department; major repairs or replacements likely need a permit and inspection.
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