NSTAR's energy efficiency programs have been designed to reduce your energy use and your electric bill. Here's a quick look at our residential programs, along with links to sites that can help you save more energy and money. If you have any questions, please call us at 800-592-2000.

Home Analyzer
Energy Savings Calculators
ENERGYsmart Library
High-Efficiency Heating Equipment Rebate
High-Efficiency Indirect and On-Demand Water Heater Rebate
Programmable Clock Thermostat Rebate
New Construction Program
MassSAVE
Weatherization Rebate
Low Income Program
ENERGY STAR Replacement Window Program

Home Analyzer
By answering a short series of questions, the NSTAR Home Analyzer (also available in Spanish) can compare your home's energy use to similar homes and get detailed recommendations on steps you can take to lower your home's energy use - not only helping the environment but also your budget. The Home Analyzer also provides information that will help you make your home more energy efficient, comfortable and safe.

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Energy Savings Calculators
Ever wonder how much you can save by installing a new, energy efficient appliance? NSTAR's Energy Savings Calculators allow you to focus on the energy use of a specific appliance in your home and gives you information on how to operate them more efficiently. Information is also available about the savings you could incur by installing a new energy efficient appliance. There are calculators available for your refrigerator, washer, dryer, water heater, heating or cooling system, thermostat and room air conditioner.

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ENERGYsmart Library
The ENERGYsmart Library is a vast online resource that will help you learn more about the energy used in your home. From electric heating to solar water heating, the library includes information on a number of different energy issues and technologies, and also includes a glossary of common energy terms.

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High-Efficiency Heating Equipment Rebate Program
When you install a high efficiency gas furnace or gas boiler in your home, NSTAR Gas will mail you a rebate check as follows:

  • $100 for furnaces greater than or equal to 92% AFUE (Annual Fuel Utilization Efficiency) without an electronic commutated motor (ECM) or equivalent advanced furnace fan system.
  • $500 for forced hot water boilers greater than or equal to 85% AFUE.
  • $200 for steam boilers greater than or equal to 82% AFUE.
  • $400 for warm air furnaces with an AFUE rating of at least 92% and equipped with an electronic commutated motor (ECM) or equivalent advanced furnace fan system.
  • $1,000 for forced hot water heater boilers with an AFUE rating of 90% or greater.

For more information, or to submit an application, call 800-232-0672 or visit the GasNetworks web site.

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High-Efficiency Indirect and On-Demand Water Heater
Rebate Program
NSTAR now offers a $300 rebate on high-efficiency indirect-fired water heaters that are connected to a natural gas fired heating system and on-demand water heaters with an Energy Factor of .82 or higher with an electronic ignition. For rebate applications or more information call 800-232-0672 or visit the GasNetworks web site for a rebate application.

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Programmable Clock Thermostat Rebate
Maximize your energy savings without sacrificing comfort by installing an ENERGY STAR programmable clock thermostat. You can save up to 15 percent a year on your heating bill and receive up to $25 with NSTAR's programmable clock thermostat rebate(s). Rebates are valid for the purchase of up to two ENERGY STAR labeled programmable thermostats. For more information and a rebate application, please call 800-232-0672 or check with your local home improvement store. For a list of qualifying thermostats, visit www.energystar.gov.

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ENERGY STAR Homes: New Construction Program
Building a new home? Consider building an ENERGY STAR home. These homes are certified to be up to 30 percent more efficient than other homes and NSTAR provides financial assistance and expertise for builders to construct new homes to ENERGY STAR specifications.

For more information, visit www.energystarhomes.com or call 800-628-8413.

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MassSAVE
Energy efficiency specialists will answer your energy-saving questions and determine your eligibility for a Home Energy Assessment. The assessment includes an analysis of your home's energy use, advice for saving energy and rebate offers on recommended energy improvements. Up to $1,000 in rebates for qualifying high efficiency heating systems and a $300 rebate available on indirect and qualifying on-demand hot water heaters.

Additionally, 50 percent off up to $1,500 toward insulation upgrades and air sealing are available. Currently 0 percent financing is available for qualified customers from the HEAT Loan program so please call 800-654-5833 or visit www.masssave.com for more information.

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Weatherization Rebate
Thinking about adding wall insulation, attic insulation or air sealing to your home? If so, you might be eligible for rebates up to $2,000 from NSTAR for such home upgrades. Call 800-266-3517 for more information.

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Energy Efficiency Program for Lower Income Customers
If you currently receive NSTAR's Discount Rate, you may be eligible for a free home energy consultation, which may include the installation of conservation measures and refrigerator metering. Your rate code and usage information appears on your NSTAR bill. If you qualify and would like more information, please contact your local Community Action or Heating Assistance Program. Information about this program and others is also available through Energy Bucks.

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ENERGY STAR Replacement Window Program
NSTAR can help you save money and increase the comfort of your home with our new ENERGY STAR replacement window rebate program. These ENERGY S TAR windows can lower your annual heating costs by up to 15 percent. NSTAR gas heating customers are also eligible for a $10 rebate on every window replaced with an ENERGY STAR-labeled window with a U-factor of .35 or less. For more information call 800-232-0672.

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