California pricing
Furnace Replacement Cost Calculator — California
Estimate what a furnace replacement should cost by output, efficiency and venting work. Every figure below is already adjusted for California labor and material pricing.
Model reviewed August 2026
Does furnace replacement cost cost more in California?
+31% versus the national baseline
Installed prices in California run about 31% above the national baseline. Permit fees are about 45% higher than the national average. Owner-builder permits allowed, with strict limits when the home is sold within a year.
Title 24 energy compliance, seismic detailing and the highest permit fees in the country make California the most expensive state to permit a project in, even before labor.
Compare with the national average furnace replacement cost calculator.
Estimated installed cost
$6,127 – $8,704
- Furnace and labor
- $6,288
- Venting work
- $0
- Removal and permit
- $675
Estimates only. Local pricing, site conditions and code requirements change the real number.
What changes the number in California
| Local cost indexAbove the national baseline | 1.31x national |
|---|---|
| Permit fee index | 1.45x national |
| Code basisStatewide code applies | California Residential Code (Title 24, Part 2.5) plus the Title 24 energy standards |
| Owner-builder posture | Owner-builder permits allowed, with strict limits when the home is sold within a year |
| Largest markets | Los Angeles, San Diego, San Jose, San Francisco |
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 California
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
- California Building Standards Commission
- 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.