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Furnace Repair in Franklin

Get fast, fair pricing from licensed local pros. Typical Franklin cost: $65 – $200 installed.

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Flame sensor
$65 – $200
Igniter
$125 – $350
Blower motor
$325 – $1.2k
Control board
$250 – $650
0%sizing
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Franklin pricing

Furnace repair cost by part.

Typical Franklin repair pricing including parts and labor. A diagnostic fee usually applies and is often credited toward the work.

Franklin, Kentucky homeowners pay between $60 and $150 for a furnace diagnostic, plus repair costs that vary by part. Typical local prices: flame sensor $65–$200, igniter $125–$350, blower motor $325–$1,200, control board $250–$650, and heat exchanger $1,200–$2,800+. Because Franklin is a smaller market (tier 4), labor rates tend to be lower than in major metros, but Kentucky’s strict statewide HVAC licensing and permitting requirements add some overhead. Every repair or replacement must have a mechanical permit and final inspection, and proof of proper sizing (Manual J load calculation) is required on the permit application. The local housing stock is older (median built 1977), so parts like heat exchangers and blower motors are more common repair needs. Franklin’s mixed-humid climate means dual-fuel systems are a strong fit, and federal 25C tax credits (up to $2,000 for heat pumps, up to $600 for high-efficiency AC) are available statewide.

  • Diagnostic / service call
    Often credited toward the repair
    $60 – $150
  • Flame sensor or thermocouple
    Common no-heat cause on gas units
    $65 – $200
  • Hot-surface igniter
    Furnace clicks but won’t light
    $125 – $350
  • Blower motor
    No airflow / weak airflow
    $325 – $1,200
  • Heat exchanger
    Cracked exchanger often means replace
    $1,200 – $2,800+

* 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 Franklin

U.S. Census ACS
Households
4,056
Homeowners
1,780
45% own
Median home value
$166,600
Median income
$54,784
Median home built
1977
Housing units
3,973

With a median home built in 1977, many Franklin AC and furnace systems are at or past their 12–15 year lifespan — a common reason replacements spike here.

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Local guide · Franklin

What’s different about Franklin.

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 Franklin

Dual-fuel (cold-climate heat pump + gas furnace)

Given Kentucky’s mixed-humid climate and mixed heating, dual-fuel (cold-climate heat pump + gas furnace) is the sensible default for most Franklin homes. A pro can confirm the right size and system for your home with a load calculation.

Sources: LG&E and KU Residential Rebates · Louisville Metro HVAC/Mechanical Permits · SEER2 Southeast Region Standards

What Franklin code requires

Installing or replacing an HVAC system in Franklin follows Kentucky rules under the state mechanical code. Here’s what applies statewide:

  • Permit

    Mechanical permit pulled by your licensed HVAC contractor; covers equipment, refrigerant, and the electrical disconnect.

    Required
  • SEER2 minimum

    Federal Southeast-region minimum for new split-system AC. Higher tiers cut bills and unlock rebates.

    14.3 SEER2 (Southeast, <45k BTU)
  • Load calculation

    Sizing by load calc — not rule of thumb — prevents an oversized unit that short-cycles and never dehumidifies.

    Required (Manual J)
  • Refrigerant
    R-454B / R-32 (R-410A phased down 2025+)
  • Good to know

    Kentucky runs a statewide HVAC licensing, permitting and inspection program (first in the US); a permit plus final inspection is required for every install/replacement, and proof of adequate sizing is required on the permit application.

    —

Sources: LG&E and KU Residential Rebates · Louisville Metro HVAC/Mechanical Permits · SEER2 Southeast Region Standards

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Not sure which rules and rebates apply to your home?

A licensed Franklin 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 Franklin

Kentucky heating is mostly mixed, which shapes the money back:

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 Kentucky.

How it works

Comfort back in three steps.

  1. 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. 2

    Get matched with a local pro

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  3. 3

    Repair or replace, fast

    Your pro confirms the price on-site and gets your comfort back. Most jobs done in a few hours.

Local insight · Franklin

Furnace Repair in Franklin, explained.

What moves the price

What affects furnace repair cost in Franklin?

The age of your furnace (median home built 1977) often means older parts that are harder to source, which can raise labor time and part cost. Kentucky’s permit and inspection requirements add a fixed cost (typically $50–$150) to any repair that involves replacing a major component. The specific part needed drives the biggest price difference: a flame sensor is more affordable, while a heat exchanger replacement can run $1,200–$2,800+. Finally, if the repair requires a load calculation or system modification to meet SEER2 minimums (14.3 SEER2 for systems under 45k BTU), that can increase the total.

Common furnace repairs in Franklin

1

Flame sensor failure

A dirty or faulty flame sensor is a frequent issue in older furnaces, causing the burner to shut off after a few seconds. Repair cost: $65–$200.

2

Blower motor problems

In homes with 40+ year old furnaces, the blower motor often wears out, leading to poor airflow or no heat. Replacement runs $325–$1,200.

3

Heat exchanger cracks

Older units (especially pre-2000) are prone to heat exchanger cracks, which can leak carbon monoxide. Repair or replacement costs $1,200–$2,800+.

FAQ

Furnace Repair FAQs — Franklin

Yes. Kentucky requires a mechanical permit and final inspection for any furnace repair that involves replacing a major component (like a heat exchanger or blower motor). Your contractor must include the permit fee and proof of proper sizing on the application.

Furnace Repair near Franklin

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