Furnace Repair in Janesville
Get fast, fair pricing from licensed local pros. Typical Janesville cost: $80 – $250 installed.
- Flame sensor
- $80 – $250
- Igniter
- $150 – $450
- Blower motor
- $400 – $1.5k
- Control board
- $300 – $800
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Furnace repair cost by part.
Typical Janesville repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
In Janesville, Wisconsin, furnace repair costs reflect the city's cold climate and older housing stock. With a median home built in 1972, many furnaces are nearing or past their expected lifespan, making repairs common. Typical local pricing for a diagnostic visit runs $75–$200, with repairs like flame sensor replacement costing $80–$250, igniter $150–$450, blower motor $400–$1,500, control board $300–$800, and heat exchanger $1,500–$3,500 or more. Wisconsin requires a mechanical permit and a licensed DSPS contractor for all furnace work, including like-for-like replacements, which adds to the overall cost. Most Janesville homes use gas heating, and equipment must be sized for severe winter design temperatures.
- Diagnostic / service callOften credited toward the repair$75 – $200
- Flame sensor or thermocoupleCommon no-heat cause on gas units$80 – $250
- Hot-surface igniterFurnace clicks but won’t light$150 – $450
- Blower motorNo airflow / weak airflow$400 – $1,500
- Heat exchangerCracked exchanger often means replace$1,500 – $3,500+
* 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 Janesville
U.S. Census ACS- Households
- 26,268
- Homeowners
- 18,532
- 64% own
- Median home value
- $186,600
- Median income
- $68,610
- Median home built
- 1972
- Housing units
- 28,850
With a median home built in 1972, many Janesville 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 Janesville.
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 Janesville
Given Wisconsin’s cold climate and gas heating, high-seer2 ac + gas furnace is the sensible default for most Janesville homes. The cooling season is short, so the budget is better spent on heating efficiency than on ultra-high SEER2. A pro can confirm the right size and system for your home with a load calculation.
Sources: Focus on Energy - Residential Heating & Cooling · Wisconsin DSPS HVAC Contractor / mechanical permitting · EIA Wisconsin Electricity Profile
What Janesville code requires
Installing or replacing an HVAC system in Janesville follows Wisconsin 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—
Cold-climate state: equipment must be sized for severe winter design temps; mechanical permit and a licensed Wisconsin HVAC contractor (DSPS) required even for like-for-like changeouts.
Sources: Focus on Energy - Residential Heating & Cooling · Wisconsin DSPS HVAC Contractor / mechanical permitting · EIA Wisconsin Electricity Profile
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A licensed Janesville 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 Janesville
Wisconsin heating is mostly gas, which shapes the money back:
- State$400-$900 instant rebateFocus on Energy - Residential 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 Wisconsin.
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- 1
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- 2
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- 3
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Furnace Repair in Janesville, explained.
What Influences Furnace Repair Costs in Janesville
Repair costs in Janesville vary mainly by the part needed and labor time. Older homes (median built 1972) may have outdated systems that require more complex repairs or harder-to-find components. The cold climate means a failed furnace is urgent, potentially increasing after-hours service fees. Permit costs and compliance with Wisconsin's SEER2 minimums (13.4 SEER2 for North region) can also affect pricing. Additionally, the shift from R-410A to R-454B or R-32 refrigerants may impact availability and cost for related components.
Common Furnace Problems in Janesville
Igniter Failure
A worn-out igniter is a frequent issue in Janesville's cold winters, costing $150–$450 to replace.
Flame Sensor Malfunction
A dirty or faulty flame sensor can cause short cycling; repair typically runs $80–$250.
Blower Motor Problems
Older homes often have blower motor failures, with replacement costing $400–$1,500.
What to Expect During a Furnace Repair in Janesville
A licensed Wisconsin contractor will first diagnose the issue for a fee of $75–$200. They will then provide an upfront cost estimate for the repair. If a permit is required (as it is for most work), the contractor will handle that. Repairs are typically completed in one visit, but parts availability may cause delays. After repair, the technician will test the system to ensure safe operation.
Furnace Repair FAQs — Janesville
Yes, Wisconsin requires a mechanical permit for any furnace work, including like-for-like replacements. Your contractor must be licensed by the Wisconsin DSPS and will handle the permit.
Furnace Repair near Janesville
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