{
 "utility": "Eversource (NSTAR Electric)",
 "utility_legal_name": "NSTAR Electric Company",
 "eia_id": 54913,
 "state": "MA",
 "state_name": "Massachusetts",
 "url": "https://meterwise.app/ma/eversource-nstar-electric/heat-pump-vs-furnace/",
 "markdown_url": "https://meterwise.app/ma/eversource-nstar-electric/heat-pump-vs-furnace/index.md",
 "json_url": "https://meterwise.app/data/v1/utilities/ma/eversource-nstar-electric.json",
 "json_path": "data/v1/utilities/ma/eversource-nstar-electric.json",
 "updated": "2026-11-10",
 "zip_codes_served": 289,
 "quick_answer": "As of November 2026, for a typical 1,800 sq ft gas-heated home on Eversource (NSTAR Electric) electricity rates in Massachusetts that needs a new furnace and AC: A high-efficiency cold-climate heat pump comes out ahead here even with a high quote: about $11,900 less than a new furnace and AC over 15 years at typical prices, and $530 a year less to run.",
 "verdict": "heat pump ahead at any quote",
 "verdict_code": "always",
 "assumptions": {
  "floor_area_sqft": 1800,
  "insulation": "average",
  "scenario": "furnace and AC both need replacing",
  "heating_fuel": "gas",
  "lifetime_years": 15
 },
 "electricity": {
  "price_per_kwh_typical_bill": 0.2597,
  "winter_extra_kwh_price": 0.2522,
  "state_average_per_kwh": 0.3035,
  "vs_state_average_pct": -14,
  "source": "utility tariff (U.S. Utility Rate Database)",
  "tariff": "Greater Boston Residential R-1 (A1)",
  "tariff_effective": "2026-02-01",
  "note": "Electricity: Greater Boston Residential R-1 (A1) tariff for Eversource (NSTAR Electric), effective 2026-02-01, from the U.S. Utility Rate Database, applied tier by tier to the extra kWh."
 },
 "climate": {
  "station": "Jamaica Plain",
  "heating_degree_days": 5811,
  "cooling_degree_days": 827,
  "normals": "NOAA 1991-2020"
 },
 "heating_fuel": {
  "default": "gas",
  "price_per_therm_gas": 2.456,
  "local_mix": {
   "electric": 0.184,
   "gas": 0.571,
   "oil": 0.187,
   "other": 0.02,
   "propane": 0.038
  }
 },
 "heat_pump": {
  "option": "High-efficiency cold-climate heat pump",
  "annual_saving_vs_like_for_like": 529,
  "break_even_quote_gap": 15883
 },
 "options": [
  {
   "id": "like",
   "option": "New gas furnace + new AC",
   "installed_typical": 13030,
   "installed_low": 10197,
   "installed_high": 15862,
   "rebates": 0,
   "energy_cost_per_year": 1755,
   "electricity_kwh_per_year": 1555,
   "fuel_per_year": "555 therms",
   "total_15_years": 39356
  },
  {
   "id": "hp",
   "option": "Heat pump (replaces both)",
   "installed_typical": 13030,
   "installed_low": 9064,
   "installed_high": 16995,
   "rebates": 0,
   "energy_cost_per_year": 1579,
   "electricity_kwh_per_year": 6261,
   "fuel_per_year": null,
   "total_15_years": 36714
  },
  {
   "id": "hp_cold",
   "option": "High-efficiency cold-climate heat pump",
   "installed_typical": 9045,
   "installed_low": 4513,
   "installed_high": 14710,
   "rebates": 7950,
   "energy_cost_per_year": 1226,
   "electricity_kwh_per_year": 4862,
   "fuel_per_year": null,
   "total_15_years": 27438
  }
 ],
 "rebates_checked": true,
 "rebate_programs": [
  {
   "name": "Mass Save air-source heat pump rebate",
   "url": "https://www.masssave.com/residential/rebates-and-incentives/heating-and-cooling/heat-pumps/air-source-heat-pumps",
   "valid_to": "2026-12-31"
  }
 ],
 "license": "https://creativecommons.org/licenses/by/4.0/",
 "citation": "MeterWise, \"Heat pump vs. gas furnace and AC on Eversource (NSTAR Electric) rates (MA)\", updated 2026-11-10, https://meterwise.app/ma/eversource-nstar-electric/heat-pump-vs-furnace/"
}