Hawaii pricing
Furnace Replacement Cost Calculator — Hawaii
Estimate what a furnace replacement should cost by output, efficiency and venting work. Every figure below is already adjusted for Hawaii labor and material pricing.
Model reviewed August 2026
Does furnace replacement cost cost more in Hawaii?
+62% versus the national baseline
Installed prices in Hawaii run about 62% above the national baseline. Permit fees are about 20% higher than the national average. Owner-builder permits allowed with an exemption affidavit.
Shipped materials and a small contractor pool make Hawaii the most expensive state in the country for nearly every project; lava and coastal hazard overlays add review on the Big Island.
Compare with the national average furnace replacement cost calculator.
Estimated installed cost
$7,577 – $10,763
- Furnace and labor
- $7,776
- Venting work
- $0
- Removal and permit
- $834
Estimates only. Local pricing, site conditions and code requirements change the real number.
What changes the number in Hawaii
| Local cost indexAbove the national baseline | 1.62x national |
|---|---|
| Permit fee index | 1.20x national |
| Code basisStatewide code applies | Hawaii State Building Code, based on the IRC with county amendments |
| Owner-builder posture | Owner-builder permits allowed with an exemption affidavit |
| Largest markets | Honolulu, Hilo, Kahului |
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 Hawaii
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
- Hawaii State Building Code Council
- 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.