2026 Cambridge (02138) Line-Item Benchmark Schedule Labor Index: 1.35x
Use this schedule when reviewing quotes from contractors in Cambridge, MA. Quotes exceeding these ranges by more than 18% typically contain dealer financing markups or unitemized overhead.
| 2026 HVAC / Heat Pump System (IECC Zone 5A (New England Electrification Zone)) | Gross Installed Cost | Federal + Eversource / National Grid Rebate | Net Homeowner Cost |
|---|---|---|---|
| 1.0-Ton 15.2 SEER2 Central AC + Gas Furnace Meets 2026 DOE regional efficiency mandate |
$12,258 | -$600 Utility Credit | $11,658 |
| 1.0-Ton 18 SEER2 Variable-Speed Inverter Heat Pump IRA Section 25C Tax Credit Eligible |
$14,464 | -$2,000 IRA + Local Utility Rebate | $11,614 |
Interactive 02138 Property Customizer Real-Time Math
Local Code, Rebate & Insurance Mandate Notes for ZIP 02138
Insurance & Wind/Hail Rule (Middlesex County): Massachusetts sixth-edition building code mandates high-wind starter strips and sealed roof decks.
2026 Incentives & Utility Rebates: Mass Save $10,000 Whole-Home Heat Pump Rebate + 0% HEAT Loan (up to $25,000)
Permitting Authority: All structural roofing, electrical panel, and mechanical replacements in 02138 must be permitted through City of Cambridge Building & Permitting Division (Middlesex County) (Design Wind Speed: 115 MPH).
Frequently Asked Questions — Cambridge, MA (02138)
How much does a new HVAC system cost in Cambridge, MA (02138)?
In Cambridge (02138), located in IECC Zone 5A (New England Electrification Zone), a code-compliant 1.0-ton SEER2 system costs $12,258 before incentives, or $10,258 net after federal efficiency tax credits.
What HVAC rebates are available for Eversource / National Grid customers in 02138?
Homeowners in 02138 qualify for: Mass Save $10,000 Whole-Home Heat Pump Rebate + 0% HEAT Loan (up to $25,000)