Furnace Repair in Dover
Get fast, fair pricing from licensed local pros. Typical Dover 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 Dover repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
In Dover, New Hampshire, furnace repair costs reflect the area's older housing stock (median home built 1975) and cold climate. Typical diagnostic fees run $75–$200, with common repairs like flame sensor replacement ($80–$250) or igniter replacement ($150–$450). New Hampshire requires a mechanical permit for most furnace repairs, which adds to the overall cost. Given the cold winters, many Dover homeowners opt for dual-fuel systems that pair a furnace with a cold-climate heat pump, eligible for NHSaves rebates and the federal 25C tax credit (30%, up to $2,000).
- 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 Dover
U.S. Census ACS- Households
- 13,140
- Homeowners
- 7,585
- 50% own
- Median home value
- $368,600
- Median income
- $90,844
- Median home built
- 1975
- Housing units
- 15,245
With a median home built in 1975, many Dover 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 Dover.
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 Dover
Given New Hampshire’s cold climate and mixed heating, dual-fuel (cold-climate heat pump + gas furnace) is the sensible default for most Dover 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: NHSaves Heat Pumps (residential rebates) · NH Department of Energy Home Electrification & Appliance Rebates · Choose Energy NH electricity rates
What Dover code requires
Installing or replacing an HVAC system in Dover follows New Hampshire 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 sizing matters: NHSaves rebates require cold-climate heat pumps rated for low ambient (NEEP-listed) performance, and equipment must use R-32/R-454B (R-410A no longer allowed).
Sources: NHSaves Heat Pumps (residential rebates) · NH Department of Energy Home Electrification & Appliance Rebates · Choose Energy NH electricity rates
Not sure which rules and rebates apply to your home?
A licensed Dover 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 Dover
New Hampshire heating is mostly mixed, which shapes the money back:
- State$250 per ton, up to $1,250NHSaves Cold-Climate Heat Pump Rebate (standard tier, switching from oil/gas/propane) →
State or utility program — verify eligibility before you buy.
- State$750 (UEF 2.0+)NHSaves Heat Pump Water Heater 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 New Hampshire.
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- 1
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- 2
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- 3
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Furnace Repair in Dover, explained.
Why furnace repair costs vary in Dover
Repair costs in Dover depend on the age of your furnace (many are 15+ years old), the specific part needed (e.g., a blower motor $400–$1,500 vs. a control board $300–$800), and whether a permit is required. Labor rates reflect the local market, and emergency after-hours calls cost more. Choosing a dual-fuel system may involve additional complexity but can qualify for rebates.
Common furnace repairs in Dover
Flame sensor failure
A dirty or faulty flame sensor causes the furnace to cycle on and off. Cleaning or replacing it costs $80–$250.
Igniter problems
A cracked or worn igniter prevents ignition. Replacement runs $150–$450, common in older Dover homes.
Blower motor issues
A failing blower motor reduces airflow. Repair or replacement costs $400–$1,500, often needed in systems over 10 years old.
Furnace Repair FAQs — Dover
Yes, New Hampshire requires a mechanical permit for most furnace repairs. Your contractor should pull the permit and include the cost in the estimate.
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