# MassHVAC

> The Massachusetts authority on high-ticket HVAC installation — heat pumps, central AC, ductless mini-splits, geothermal, and brand-specific installs (Mitsubishi, Daikin, Bosch, Midea) — with a focus on Mass Save rebate eligibility, real cost-after-rebate math for the 2026 program year, federal program status post-OBBBA, and the procedural sequences for booking assessments, claiming rebates, and getting installs done. Installation work is delivered through our partner Comfitrust.

MassHVAC is a Massachusetts heat pump and HVAC installation service. We research current Massachusetts incentive programs, build accurate cost-after-rebate quotes, and deliver the installation work through our partner Comfitrust. Our content covers what install actually costs in MA after Mass Save rebates, who qualifies, which utility sponsor serves each city, and how the 2026 program changes (including the December 31, 2025 expiration of federal 25C/25D tax credits) affect homeowner decisions.

## Core pages

- [Home](https://masshvac.com/): Overview of services, cost-after-rebate hook, and lead-capture entry point.
- [Massachusetts HVAC Rebates Hub](https://masshvac.com/massachusetts-hvac-rebates/): The definitive 2026 guide to Mass Save heat pump rebates, the HEAT Loan, the IRA-funded HEAR rebate, the MLP Zero-Interest Loan, refrigerant transition rules, and the expired federal §25C/§25D credits.
- [Mass Save Heat Pump Rate (Opt-in TOU)](https://masshvac.com/resources/mass-save-heat-pump-rate-massachusetts/): Dedicated guide to the residential opt-in time-of-use Heat Pump Rate from Eversource MA (~$0.23/kWh blended vs $0.32 standard) and National Grid MA (~$0.22 vs $0.30) — the single largest factor in MA heat-pump operating-cost math, and the rate most heat-pump households should enroll in post-install.
- [Eversource MA Heat Pump Rebates](https://masshvac.com/resources/eversource-massachusetts-heat-pump-rebates/): Per-utility deep dive covering Eversource Electric's role as Mass Save sponsor (heat pump rebates up to $8,500), the Eversource opt-in Heat Pump Rate, the distinction between Eversource Electric and Eversource Gas of Massachusetts (formerly Columbia Gas, acquired 2020), and the MA cities Eversource serves.
- [National Grid MA Heat Pump Rebates](https://masshvac.com/resources/national-grid-massachusetts-heat-pump-rebates/): Per-utility deep dive covering National Grid's role as Mass Save sponsor for Worcester, Lowell, Brockton, Quincy, Lynn, and ~80 other MA cities. Includes the National Grid opt-in Heat Pump Rate, the Mass Electric service territory, and how National Grid's rebate processing compares to Eversource.
- [Heat Pump Cost & Rebate Calculator](https://masshvac.com/rebate-calculator/): Interactive tool that estimates your installed heat pump cost net of Mass Save rebate, IRA HEAR rebate, monthly HEAT Loan payment, and 20-year fuel-cost savings against your current heating system.
- [Heat Pump Sizing Calculator](https://masshvac.com/resources/heat-pump-sizing-calculator/): Approximate-Manual-J tool that returns tonnage + Mass Save 90–120% sizing-bonus range from sqft, climate zone (IECC 5A or 6A), insulation, windows, and ceiling height.
- [Heat Pump Operating Cost Calculator](https://masshvac.com/resources/heat-pump-operating-cost-calculator/): Compares your current fuel cost (oil, gas, propane, electric resistance) to a cold-climate heat pump, using verified 2026 MA fuel prices and electricity rates by Mass Save sponsor. Returns annual savings + 5/10/20-year cumulative savings.
- [Incentives Changelog](https://masshvac.com/incentives-changelog/): Dated record of every Massachusetts HVAC incentive change since 2025 — Mass Save rate adjustments, HEAT Loan term changes, federal §25C / §25D expiration, refrigerant transition cutoffs, and DPU plan reductions. Each entry sourced to a primary reference.
- [Mass Save Sponsors Directory](https://masshvac.com/mass-save-sponsors/): The six Mass Save sponsor utilities + every Massachusetts city we cover mapped to its electric and gas sponsor (or MLP exclusion).
- [Service Areas Index](https://masshvac.com/service-areas/): All 12 Massachusetts cities we serve with Mass Save sponsor and county.
- [Contact](https://masshvac.com/contact/): Phone and form for quote requests, editorial corrections, and HPIN-installer partnership inquiries.
- [Methodology](https://masshvac.com/methodology/): How we verify rebate figures, primary-source policy, quarterly verification cadence, and corrections policy.
- [Primary Sources](https://masshvac.com/sources/): The full dated index of every primary source (Mass Save, MA DOER, IRS, EPA, ENERGY STAR, DPU tariffs, ACCA, IECC) used as a factual reference on MassHVAC, grouped by category with what we extract from each.
- [Editorial Calendar](https://masshvac.com/editorial-calendar/): The public verification schedule — quarterly Mass Save and utility-rate re-verification, annual AMI/SMI refresh, event-driven federal program and refrigerant transition checks. Each cycle lists its next-due date, scope, and primary sources.

## Service pillars

- [Air Conditioner Installation](https://masshvac.com/air-conditioner-installation/): What AC installation costs in Massachusetts, system options (central, ductless, heat pump), and which qualify for Mass Save.
- [AC Installation (sub-pillar)](https://masshvac.com/air-conditioner-installation/ac-installation/): Tighter focus on standard AC installation in MA homes.
- [Ductless Heating & Cooling Units](https://masshvac.com/ductless-heating-cooling-units/): Mini-split systems — sizing, cost, rebate qualification, when ductless beats central.
- [Geothermal Heating & Cooling](https://masshvac.com/geothermal-heating-cooling/): Ground-source heat pump install in MA — cost, payback, current incentives (note: federal 25D credit expired Dec 31, 2025).
- [HVAC Installation Companies (near me)](https://masshvac.com/ac-installation/hvac-installation-companies/): How to choose an HVAC installer in Massachusetts; what to verify (licensing, Mass Save HPIN status, Manual J).
- [AC Installation (near me)](https://masshvac.com/ac-installation/): General "near me" install intent across MA.
- [Midea Air Conditioner Installation](https://masshvac.com/midea-air-conditioner-installation/): Brand-specific guide for Midea heat pumps and AC units in MA.

## Supporting service pages (under pillars)

### Air conditioner installation cluster
- [Mini-Split AC Installation in Massachusetts](https://masshvac.com/air-conditioner-installation/mini-split-ac-installation/)
- [Central Air Conditioner Installation in Massachusetts](https://masshvac.com/air-conditioner-installation/central-air-conditioner-installation/)
- [Heat Pump Installation in Massachusetts](https://masshvac.com/air-conditioner-installation/heat-pump-installation/)
- [AC Replacement in Massachusetts](https://masshvac.com/air-conditioner-installation/ac-replacement/)
- [HVAC Replacement in Massachusetts](https://masshvac.com/air-conditioner-installation/hvac-replacement/)
- [AC Installation Cost in Massachusetts](https://masshvac.com/air-conditioner-installation/ac-installation/ac-installation-cost/)
- [AC Sizing Guide for Massachusetts](https://masshvac.com/air-conditioner-installation/ac-installation/ac-sizing-guide/)
- [Ductwork Replacement for AC in Massachusetts](https://masshvac.com/air-conditioner-installation/ac-installation/ductwork-replacement/)

### Ductless cluster
- [Ductless Mini-Split Installation in Massachusetts](https://masshvac.com/ductless-heating-cooling-units/ductless-mini-split-installation/)
- [Ductless vs Central Air in Massachusetts](https://masshvac.com/ductless-heating-cooling-units/ductless-vs-central-air/)
- [Ductless Mini-Split Sizing Guide](https://masshvac.com/ductless-heating-cooling-units/ductless-sizing-guide/)
- [Mini-Split Cost in Massachusetts](https://masshvac.com/ductless-heating-cooling-units/mini-split-cost/)

### Geothermal cluster
- [Geothermal Heat Pump Installation in Massachusetts](https://masshvac.com/geothermal-heating-cooling/geothermal-heat-pump-installation/)
- [Geothermal Cost in Massachusetts](https://masshvac.com/geothermal-heating-cooling/geothermal-cost-massachusetts/)
- [Geothermal Ground Loop Types](https://masshvac.com/geothermal-heating-cooling/ground-loop-types/)

### HVAC companies cluster
- [How to Choose an HVAC Installer in Massachusetts](https://masshvac.com/ac-installation/hvac-installation-companies/how-to-choose-hvac-installer/)
- [Mass Save HPIN Installers](https://masshvac.com/ac-installation/hvac-installation-companies/mass-save-hpin-installer/)

### Midea cluster
- [Midea Heat Pump Installation in Massachusetts](https://masshvac.com/midea-air-conditioner-installation/midea-heat-pump-installation/)
- [Midea Cold-Climate Heat Pump Models](https://masshvac.com/midea-air-conditioner-installation/midea-cold-climate-models/)

### AC near-me cluster
- [AC Installation Cost (Near Me)](https://masshvac.com/ac-installation/ac-installation-cost-near-me/)
- [When to Replace Your AC in Massachusetts](https://masshvac.com/ac-installation/when-to-replace-ac/)

## Topic guides (educational TOFU resources at /resources/)

### Foundational concepts
- [Massachusetts HVAC & Mass Save Glossary](https://masshvac.com/resources/massachusetts-hvac-glossary/): ~40-entry glossary covering HPIN, HPQPL, Manual J, ACCA, SMI, AMI, §25C, §25D, OBBBA, HEAR, HOMES, MLP, R-32, R-454B, SEER2, HSPF2, and every other MA HVAC term. Emits DefinedTermSet schema.
- [Cold-Climate Heat Pumps Explained](https://masshvac.com/resources/cold-climate-heat-pump-explained/): The ENERGY STAR ccASHP specification (70% capacity at 5°F, COP 1.75+), why it gates Mass Save HPQPL listing, and capacity retention curves vs non-cold-climate heat pumps.
- [Air Conditioner Installation Guide for Massachusetts](https://masshvac.com/resources/air-conditioner-installation/)
- [Ductless Heating & Cooling Guide for Massachusetts](https://masshvac.com/resources/ductless-heating-cooling-units/)
- [Manual J Load Calculation Explained](https://masshvac.com/resources/manual-j-load-calculation/)

### Rebates and federal programs
- [Mass Save Eligibility Guide](https://masshvac.com/resources/mass-save-eligibility-guide/): Who qualifies, by sponsor utility, fuel type, and household structure.
- [Mass Save Home Energy Assessment](https://masshvac.com/resources/mass-save-home-energy-assessment/): The free 60–90 minute assessment that gates every Mass Save rebate. What to expect, what to ask, how to use the paperwork.
- [How to Claim Your Mass Save Heat Pump Rebate](https://masshvac.com/resources/mass-save-rebate-claim-process/): Seven-step procedural guide from assessment to rebate check arriving. With realistic 2026 timelines and the four mistakes that forfeit the rebate. Emits HowTo schema.
- [Mass Save HEAT Loan in Massachusetts](https://masshvac.com/resources/heat-loan-massachusetts/): 0% APR financing up to $25,000, SMI-tiered terms (84/60/36 months), and how it interacts with the MLP Zero-Interest Loan.
- [HEAR Rebates in Massachusetts](https://masshvac.com/resources/hear-rebates-massachusetts/): The IRA-funded federal $8,000/household rebate that survived OBBBA, eligibility (≤80% AMI), stacking math with Mass Save, and application process.
- [HEAR Rebate Application Walkthrough (Massachusetts)](https://masshvac.com/resources/hear-rebate-application-massachusetts/): Procedural companion to the HEAR overview — 8-step HowTo-schema'd application sequence, income-document checklist, 80% AMI thresholds by Massachusetts county, common rejection reasons, and the 14–22 week typical timeline from Home Energy Assessment to HEAR check arrival.
- [Income-Qualified Heat Pump Installation](https://masshvac.com/resources/income-qualified-heat-pump-massachusetts/): Enhanced Mass Save rebates ($16K cap), federal HEAR ($8K), and the no-cost Turnkey path for households below 60% SMI. How each works and how they stack.

### Costs and comparisons
- [Heat Pump Cost in Massachusetts](https://masshvac.com/resources/heat-pump-cost-massachusetts/): Comprehensive 2026 cost breakdown by system type and zone count, with post-rebate net pricing, regional MA variation, and worked monthly-payment math after the HEAT Loan.
- [Heat Pump vs Furnace in Massachusetts](https://masshvac.com/resources/heat-pump-vs-furnace-massachusetts/): Side-by-side install cost, operating cost, Mass Save rebate eligibility, and 20-year cost of ownership for heat pumps vs oil and gas furnaces.
- [Oil to Heat Pump Conversion in Massachusetts](https://masshvac.com/resources/oil-to-heat-pump-massachusetts/): MA has the second-highest share of oil-heated homes in the country. Full conversion playbook including oil tank decommissioning regulation (310 CMR 12.05), worked cost-after-rebate example, and the payback math.
- [Geothermal vs Air-Source Heat Pump](https://masshvac.com/resources/geothermal-vs-air-source-heat-pump/): 2026 comparison with the federal §25D credit gone — when geothermal still makes sense and when air-source wins.

### Brand-specific guides
- [Mitsubishi Heat Pump Installation in Massachusetts](https://masshvac.com/resources/mitsubishi-heat-pump-massachusetts/): The dominant MA cold-climate brand. M-Series, MXZ, P-Series lines and the Diamond Contractor credential.
- [Daikin Heat Pump Installation in Massachusetts](https://masshvac.com/resources/daikin-heat-pump-massachusetts/): Aurora and LV-Series cold-climate lines, MA HPQPL eligibility, ~10-15% cheaper than Mitsubishi.
- [Bosch Heat Pump Installation in Massachusetts](https://masshvac.com/resources/bosch-heat-pump-massachusetts/): IDS (Inverter Ducted Split), Climate 5000 ductless, Greensource geothermal — the specialist choice for MA ducted retrofits.
- [Gree Heat Pump Installation in Massachusetts](https://masshvac.com/resources/gree-heat-pump-massachusetts/): Value-tier alternative from the world's largest residential AC manufacturer by volume. R-32 Envo / Livo / Multi / Sapphire / Vireo lineup. Verify HPQPL listing per model.
- [APower Heat Pump Installation in Massachusetts](https://masshvac.com/resources/apower-heat-pump-massachusetts/): Budget-tier brand (Airy, Pular, Cosmo, Clivia lines) with a smaller MA installer footprint than Mitsubishi/Daikin/Bosch. Heavier installer vetting recommended.
- [AUX Heat Pump Installation in Massachusetts](https://masshvac.com/resources/aux-heat-pump-massachusetts/): Mid-tier Chinese HVAC brand with the ACHP 2025 cold-climate-positioned lineup. Smallest published US warranty footprint of the seven brands we cover — demand written terms before signing.
- [Heat Pump Brands Compared for Massachusetts](https://masshvac.com/resources/heat-pump-brands-massachusetts/): Side-by-side comparison table of Mitsubishi vs Daikin vs Bosch vs Midea for MA homes — cost, HPQPL eligibility, MA installer footprint, warranty, refrigerant, and which scenario each brand wins.
- [Mass Save vs MLP Heat Pump Programs Compared](https://masshvac.com/resources/mass-save-vs-mlp-rebates/): Side-by-side comparison of the Mass Save program (6 IOU sponsors) and the Massachusetts Municipal Light Plant programs (41 MLP towns) including the MLP Zero-Interest Loan as the financing analog for MLP residents.

### Heat pump troubleshooting (homeowner-pain-point category)
- [Heat Pump Making Noise: Diagnostic Guide](https://masshvac.com/resources/heat-pump-noise-troubleshooting/): Diagnoses unusual heat-pump sounds (loud humming, mechanical clicking, vibration, screeching, refrigerant noise) and distinguishes normal operation noise from problem signals. Includes DIY-vs-call-installer decision tree and typical MA service-call costs.
- [Heat Pump Short Cycling: Causes & Fixes](https://masshvac.com/resources/heat-pump-short-cycling-troubleshooting/): Diagnoses heat pumps that turn on/off rapidly — most often a sales failure at install (oversizing) the original installer skipped Manual J on. Connects directly to the Mass Save 90–120% sizing-bonus rule that exists to prevent this.
- [Heat Pump Electric Bill Suddenly High](https://masshvac.com/resources/heat-pump-electric-bill-high-troubleshooting/): The single most-important fix is Heat Pump Rate enrollment (~$0.23/kWh blended on Eversource vs $0.32 standard, a 28% savings). Includes worked math for 1500/2000/2500 sqft homes, electric-strip backup heat diagnostics, and MLP-utility carve-out.
- [Heat Pump Not Heating Enough](https://masshvac.com/resources/heat-pump-not-heating-troubleshooting/): MA cold-weather diagnostic for heat pumps that can't reach setpoint. Covers iced outdoor coil vs normal defrost cycle, refrigerant issues, undersizing, electric backup heat lockout, and the 4-step homeowner diagnostic order before calling an installer.

### Sizing and install process
- [Heat Pump Sizing for Massachusetts Homes](https://masshvac.com/resources/heat-pump-sizing-massachusetts/): How many tons do you actually need? Square-foot reference table, MA climate-zone effects, and why oversizing forfeits the $500 Mass Save sizing bonus.
- [Heat Pump Install Day in Massachusetts](https://masshvac.com/resources/heat-pump-installation-process-massachusetts/): What actually happens on the day(s) the crew installs — 10-step sequence from pre-install walkthrough through municipal inspection. Emits HowTo schema.
- [Electric Panel Upgrade for Heat Pump](https://masshvac.com/resources/electric-panel-upgrade-heat-pump-massachusetts/): 25-35% of MA installs need one. Load calculation logic, $2K-$5K cost range, HEAR funding up to $4,000 for income-qualified panel upgrades.
- [Heat Pump Noise in Massachusetts](https://masshvac.com/resources/heat-pump-noise-massachusetts/): Decibel ranges, the inverse-square distance rule, and Cambridge/Boston/Newton/Somerville noise ordinances.
- [Heat Pump Maintenance in Massachusetts](https://masshvac.com/resources/heat-pump-maintenance-massachusetts/): Monthly + quarterly homeowner tasks, annual professional service ($150-$250), 15-20 year lifespan, coastal-MA wear considerations.

### Installer vetting
- [How to Vet HVAC Installation Companies in Massachusetts](https://masshvac.com/resources/hvac-installation-companies/): Massachusetts Refrigeration Technician licensing, Mass Save HPIN enrollment verification, three-quote rule, and what to ask.

## Local service areas (per-city hubs)

We cover 12 Massachusetts cities with both per-cluster spokes and per-city hubs:

- [Boston, MA — HVAC Installation](https://masshvac.com/service-areas/boston/) (Suffolk County · Eversource electric · National Grid gas)
  - [Back Bay heat pump installation](https://masshvac.com/service-areas/boston/back-bay/) — Victorian brownstone retrofits + BBAC review
  - [Beacon Hill heat pump installation](https://masshvac.com/service-areas/boston/beacon-hill/) — Federal-era brick rowhouses + Beacon Hill Architectural Commission
  - [South End heat pump installation](https://masshvac.com/service-areas/boston/south-end/) — South End Landmark District retrofits
  - [Dorchester heat pump installation](https://masshvac.com/service-areas/boston/dorchester/) — triple-decker conversions + oil-to-heat-pump path
  - [Jamaica Plain heat pump installation](https://masshvac.com/service-areas/boston/jamaica-plain/) — Victorian + triple-decker mix, no historic review most of neighborhood
  - [Roxbury heat pump installation](https://masshvac.com/service-areas/boston/roxbury/) — income-qualified Enhanced + HEAR rebate stacking, Highland Park ACD
  - [West Roxbury heat pump installation](https://masshvac.com/service-areas/boston/west-roxbury/) — post-war single-family, ducted retrofit opportunities
  - [Allston/Brighton heat pump installation](https://masshvac.com/service-areas/boston/allston-brighton/) — multi-unit + Brighton ducted retrofits
- [Worcester, MA — HVAC Installation](https://masshvac.com/service-areas/worcester/) (Worcester County · National Grid)
  - [Vernon Hill heat pump installation](https://masshvac.com/service-areas/worcester/vernon-hill/) — dense 1880s–1920s triple-decker corridor near Holy Cross
  - [Main South heat pump installation](https://masshvac.com/service-areas/worcester/main-south/) — Clark University area, renter-density, income-qualified rebate concentration
  - [West Side heat pump installation](https://masshvac.com/service-areas/worcester/west-side/) — Worcester's upscale residential corridor, ducted retrofit opportunities
  - [Tatnuck heat pump installation](https://masshvac.com/service-areas/worcester/tatnuck/) — post-war single-family, ducted-friendly mid-century stock
- [Springfield, MA — HVAC Installation](https://masshvac.com/service-areas/springfield/) (Hampden County · Eversource)
- [Cambridge, MA — HVAC Installation](https://masshvac.com/service-areas/cambridge/) (Middlesex County · Eversource electric · Eversource Gas)
  - [Harvard Square heat pump installation](https://masshvac.com/service-areas/cambridge/harvard-square/) — Victorian + Old Cambridge Historic District + CHC Certificate of Appropriateness
  - [Central Square heat pump installation](https://masshvac.com/service-areas/cambridge/central-square/) — dense triple-decker corridors, mostly no CHC review, noise ordinance considerations
  - [Porter Square heat pump installation](https://masshvac.com/service-areas/cambridge/porter-square/) — mid-century single-family ducted retrofit opportunities + Avon Hill conservation district
  - [Kendall Square / East Cambridge heat pump installation](https://masshvac.com/service-areas/cambridge/kendall-square/) — high-rise condo + Old East Cambridge brick rowhouses split
- [Lowell, MA — HVAC Installation](https://masshvac.com/service-areas/lowell/) (Middlesex County · National Grid)
- [Brockton, MA — HVAC Installation](https://masshvac.com/service-areas/brockton/) (Plymouth County · National Grid electric · Eversource Gas)
- [Quincy, MA — HVAC Installation](https://masshvac.com/service-areas/quincy/) (Norfolk County · National Grid)
- [Lynn, MA — HVAC Installation](https://masshvac.com/service-areas/lynn/) (Essex County · National Grid)
- [New Bedford, MA — HVAC Installation](https://masshvac.com/service-areas/new-bedford/) (Bristol County · Eversource)
- [Fall River, MA — HVAC Installation](https://masshvac.com/service-areas/fall-river/) (Bristol County · National Grid electric · Liberty Utilities gas)
- [Newton, MA — HVAC Installation](https://masshvac.com/service-areas/newton/) (Middlesex County · Eversource electric · National Grid gas)
- [Somerville, MA — HVAC Installation](https://masshvac.com/service-areas/somerville/) (Middlesex County · Eversource electric · National Grid gas)

For each city, we also publish 7 service-specific spoke pages (e.g. `/air-conditioner-installation/boston/`, `/ductless-heating-cooling-units/boston/`, etc.) — 84 spokes total across the 7 clusters × 12 cities matrix.

## Brand × city long-tail (84 pages: 7 brands × 12 cities)

Programmatic pages combining each brand's product lineup, install cost, and installer credentials with each city's housing stock, climate zone, permit office, and Mass Save sponsor. URL pattern: `/resources/{brand}-heat-pump-{city}/`.

- Brands: Mitsubishi, Daikin, Bosch, Midea, Gree, APower, AUX — see [Heat Pump Brands Compared](https://masshvac.com/resources/heat-pump-brands-massachusetts/) for the comparison hub
- Cities: Boston, Worcester, Springfield, Cambridge, Lowell, Brockton, Quincy, Lynn, New Bedford, Fall River, Newton, Somerville
- Example URLs: [Mitsubishi in Boston](https://masshvac.com/resources/mitsubishi-heat-pump-boston/), [Daikin in Springfield](https://masshvac.com/resources/daikin-heat-pump-springfield/), [Gree in Worcester](https://masshvac.com/resources/gree-heat-pump-worcester/), [APower in Cambridge](https://masshvac.com/resources/apower-heat-pump-cambridge/), [AUX in Newton](https://masshvac.com/resources/aux-heat-pump-newton/)

## Per-city HVAC permits (12 pages)

City-specific HVAC permitting guides covering permit offices, typical fee ranges, historic-district review where it applies, and the inspection process homeowners can expect. URL pattern: `/resources/{city}-hvac-permits/`.

- [Boston HVAC permits](https://masshvac.com/resources/boston-hvac-permits/) (Inspectional Services Department + BBAC/Beacon Hill ACC for Back Bay/Beacon Hill)
- [Cambridge HVAC permits](https://masshvac.com/resources/cambridge-hvac-permits/) (Cambridge Historical Commission + 60/50 dB noise ordinance)
- [Worcester HVAC permits](https://masshvac.com/resources/worcester-hvac-permits/), [Springfield](https://masshvac.com/resources/springfield-hvac-permits/), [Newton](https://masshvac.com/resources/newton-hvac-permits/), [Somerville](https://masshvac.com/resources/somerville-hvac-permits/), [Lowell](https://masshvac.com/resources/lowell-hvac-permits/), [Brockton](https://masshvac.com/resources/brockton-hvac-permits/), [Quincy](https://masshvac.com/resources/quincy-hvac-permits/), [Lynn](https://masshvac.com/resources/lynn-hvac-permits/), [New Bedford](https://masshvac.com/resources/new-bedford-hvac-permits/), [Fall River](https://masshvac.com/resources/fall-river-hvac-permits/)

## Editorial principles

- Every dollar figure is dated and sourced to a primary source (Mass Save, MA DOER, ENERGY STAR, IRS).
- The federal §25C ($2,000 heat pump credit) and §25D (30% geothermal credit) ended December 31, 2025 under the One Big Beautiful Bill Act (P.L. 119-21) and have not been reinstated or replaced as of mid-2026. We cover the IRA-funded HEAR rebate program (up to $8,000 for income-qualified heat pump installs) separately, since it survives OBBBA and stacks with Mass Save.
- We do not fabricate reviews, license numbers, technician names, or operator credentials. Installation work is delivered through our partner Comfitrust.
- All content is human-reviewed and dated; the rebate program rates we cite are re-verified before any publish or refresh on a quarterly cadence. See the [Methodology page](https://masshvac.com/methodology/) for the full sourcing policy and the [Incentives Changelog](https://masshvac.com/incentives-changelog/) for the dated record of every change we've tracked since 2025.