Furnace Repair in Chattanooga
Get fast, fair pricing from licensed local pros. Typical Chattanooga cost: $85 – $275 installed.
- Flame sensor
- $85 – $275
- Igniter
- $150 – $475
- Blower motor
- $425 – $1.6k
- Control board
- $325 – $850
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Furnace repair cost by part.
Typical Chattanooga repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.
In Chattanooga, furnace repair costs vary based on the age of your system and the specific issue. With a median home built in 1974, many homes have older furnaces that may require more frequent repairs. Typical diagnostic fees range from $80 to $200, and common repairs like flame sensor replacement run $85–$275, while blower motor replacement can cost $425–$1,600. Tennessee requires a mechanical permit for furnace work, and load calculations are recommended for proper sizing. Given the mixed-humid climate and mostly electric heating, many homeowners consider heat pump systems for efficiency.
- Diagnostic / service callOften credited toward the repair$80 – $200
- Flame sensor or thermocoupleCommon no-heat cause on gas units$85 – $275
- Hot-surface igniterFurnace clicks but won’t light$150 – $475
- Blower motorNo airflow / weak airflow$425 – $1,600
- Heat exchangerCracked exchanger often means replace$1,600 – $3,700+
* 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 Chattanooga
U.S. Census ACS- Households
- 72,515
- Homeowners
- 41,137
- 48% own
- Median home value
- $230,500
- Median income
- $57,703
- Median home built
- 1974
- Housing units
- 86,238
With a median home built in 1974, many Chattanooga 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 Chattanooga.
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 Chattanooga
Given Tennessee’s mixed-humid climate and electric heating, high-seer2 heat pump is the sensible default for most Chattanooga homes. A pro can confirm the right size and system for your home with a load calculation.
Sources: TVA EnergyRight Residential Heat Pump Rebate · TN.gov State Energy Office - Home Energy Rebate Programs · EnergySage Tennessee Electricity Rates
What Chattanooga code requires
Installing or replacing an HVAC system in Chattanooga follows Tennessee 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—
Most TVA EnergyRight HVAC rebates require the home's primary heating to be electric and the work to be done by a Quality Contractor Network member.
Sources: TVA EnergyRight Residential Heat Pump Rebate · TN.gov State Energy Office - Home Energy Rebate Programs · EnergySage Tennessee Electricity Rates
Not sure which rules and rebates apply to your home?
A licensed Chattanooga 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 Chattanooga
Tennessee heating is mostly electric, which shapes the money back:
- StateUp to $1,500TVA EnergyRight High-Efficiency Heat Pump Rebate →
State or utility program — verify eligibility before you buy.
- StateUp to $700TVA EnergyRight High-Efficiency Central AC 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.
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 Tennessee.
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- 1
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- 2
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- 3
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Furnace Repair in Chattanooga, explained.
Why Furnace Repair Costs Vary in Chattanooga
Repair costs depend on the part needed, labor rates, and whether a permit is required. Older homes (median built 1974) may have outdated systems that are harder to service. The type of furnace—gas or electric—also affects pricing. In Chattanooga, many homes use electric heating, and TVA EnergyRight rebates are available for electric heat pumps through Quality Contractor Network members. Seasonal demand can influence availability, but prices remain competitive.
Common Furnace Issues in Chattanooga
Flame Sensor Failure
A dirty or faulty flame sensor can cause the furnace to shut off after ignition. Cleaning or replacing it costs $85–$275.
Igniter Problems
A worn igniter prevents the furnace from lighting. Replacement typically runs $150–$475.
Blower Motor Malfunction
The blower motor circulates warm air; failure leads to no heat. Repair costs $425–$1,600.
What to Expect During a Furnace Repair in Chattanooga
A technician will diagnose the issue, often starting with a $80–$200 diagnostic fee. They will check the thermostat, electrical connections, and safety controls. For repairs requiring a permit, the contractor will handle the paperwork. After repair, they will test the system to ensure proper operation. If your home uses electric heating, ask about TVA EnergyRight rebates for qualifying heat pump upgrades.
Furnace Repair FAQs — Chattanooga
Yes, Tennessee requires a mechanical permit for furnace repair or replacement. Your contractor should obtain the permit and schedule any required inspections.
Furnace Repair near Chattanooga
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