Connecticut pricing
Furnace Replacement Cost Calculator — Connecticut
Estimate what a furnace replacement should cost by output, efficiency and venting work. Every figure below is already adjusted for Connecticut labor and material pricing.
Model reviewed August 2026
Does furnace replacement cost cost more in Connecticut?
+19% versus the national baseline
Installed prices in Connecticut run about 19% above the national baseline. Permit fees are about 15% higher than the national average. Homeowners may permit work on a single-family home they occupy.
Older housing stock means knob-and-tube, asbestos and undersized services surface constantly; budget for discovery work that newer-stock states rarely hit.
Compare with the national average furnace replacement cost calculator.
Estimated installed cost
$5,566 – $7,906
- Furnace and labor
- $5,712
- Venting work
- $0
- Removal and permit
- $613
Estimates only. Local pricing, site conditions and code requirements change the real number.
What changes the number in Connecticut
| Local cost indexAbove the national baseline | 1.19x national |
|---|---|
| Permit fee index | 1.15x national |
| Code basisStatewide code applies | Connecticut State Building Code, based on the IRC |
| Owner-builder posture | Homeowners may permit work on a single-family home they occupy |
| Largest markets | Hartford, Bridgeport, New Haven, Stamford |
The formula
Cost = base unit cost x efficiency multiplier + venting + removal + permit
High-efficiency condensing furnaces (90%+ AFUE) need new PVC venting and a condensate drain, which is why the jump from 80% to 96% AFUE costs more than the equipment difference alone.
Covered markets in Connecticut
City-level cost and permit pages with local building department links.
Frequently asked questions
How much is a new furnace installed?
Most homeowners pay $4,000 to $8,500 for a replacement gas furnace in 2026. Electric furnaces are cheaper to install but cost far more to run.
How long does a furnace last?
15 to 20 years for a gas furnace with annual service. Past year 15, repairs over about $1,500 usually favor replacement.
Sources
Sources & verification
- Connecticut Office of the State Building Inspector
- ENERGY STAR sizing and efficiency guidance
- ACCA Manual J / Manual S sizing standards
- AHRI equipment performance directory
- International Code Council (IRC/IBC)
Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.