Natural Gas Heating and Water Heating

Lower your heating and water heating bills plus save on equipment costs.

Natural Gas Heating Equipment

You can reduce your winter energy costs by upgrading to high-efficiency heating equipment. In addition to savings on your monthly bill, Sponsors of Mass Save® offer rebates of up to $2,750 to eligible customers. 

Natural Gas Heating Equipment Rebates

Customers replacing existing Condensing Natural Gas Furnaces or Boilers are not eligible for Tier II rebate amounts. If pursuing Tier II rebates, pre-verification is required prior to installation. Visit Verified

Equipment Type Efficiency Requirement Tier I Rebate Amount Tier II Rebate Amount
Hot Air Furnace with ECM* ≥95% AFUE** $200 $750
≥97% AFUE $200 $1,250
Hot Water Boiler *** ≥ 95% AFUE $200 $2,750
Combined Condensing Furnace with On-Demand Water Heater ≥ 97% AFUE $950
Combined Condensing Boiler with On-Demand Water Heater ≥ 95% AFUE $1,600
  1. * Electronically Commutated Motor (ECM)  
  2. ** Annual Fuel Utilization Efficiency (AFUE) Rating  
  3. *** Outdoor Reset Control Required  


Natural Gas Water Heaters

A high-efficiency water heater can reduce your monthly water heating costs. In addition to savings on your monthly bill, Sponsors of Mass Save® offer rebates of up to $700 to eligible customers. 

Natural Gas Water Heaters Rebates

Equipment Type Efficiency Requirements Rebate Amount
ENERGY STAR® Certified On-Demand, Tankless Water Heater UEF* of 0.87 or greater $700
ENERGY STAR Certified Storage Water Heater Medium draw UEF of 0.64 or greater
High draw UEF of 0.68 or greater
ENERGY STAR Certified Condensing Gas Water Heater UEF of 0.80 or greater $500

*Uniform Energy Factor (UEF)  


Interested in 0% financing?

Apply for a Mass Save HEAT Loan prior to installing your equipment. The Sponsors® of Mass Save are buying down interest rates to make energy efficiency more affordable for Massachusetts residents. With our HEAT Loan, you could qualify for a loan of up to $25,000 toward qualified energy efficient home improvements with terms up to seven years, depending on your Sponsor and the loan provider.


New system(s) must be replacing an existing residential electric, propane, natural gas, or oil water heating and/or heating system. Visit Residential New Construction Program, Residential High-Rise New Construction Program and Renovations and Additions Program to learn about how to participate in these programs.



  • Offers valid only for residential customers in Massachusetts where Berkshire Gas, Eversource, Liberty Utilities, National Grid, or Unitil is the Program Sponsor.
  • Condensing heating equipment replacing pre-existing non-condensing heating equipment may be eligible for Tier II rebates:
    • Account holder must complete a special home visit or Home Energy Assessment prior to installation to confirm the inefficiency of existing equipment. Get started
  • Equipment must be purchased and installed between January 1, 2022, and December 31, 2022
  • Equipment must be installed by a licensed contractor or plumber
  • Rebate form must be filled out completely, signed, accompanied by dated receipts or invoices, and received by the Mass Save representative within 60 days of installation

Equipment installation may be subject to a verification inspection prior to rebate reimbursement. See Terms & Conditions for full requirements.


For more information about program details and the rebates offered on qualified equipment, call 1-800-232-0672 or email [email protected].