Unitil (Gas) - Residential Energy Efficiency Program

May 14, 2024


Unitil offers its New Hampshire residential gas customers a number of programs to encourage more energy-efficient homes. The Home Performance with Energy Star Program is available to customers with higher than average energy bills. The program includes a home energy audit which identifies potential areas for energy efficiency improvements. Qualifying improvements can result in a 50% utility rebate for the customer, up to $4,000.  Common energy savings improvements utilized by the program include:

  • Sealing air leaks and adding insulation
  • Improving heating and cooling systems
  • Sealing ductwork
  • Upgrading lighting, appliances, and water heating equipment
  • Installing renewable energy systems

Until also offers rebates for residential new construction through the Natural Gas Energy Star Homes/Residential New Construction Program. To receive rebates, new homes must meet certain energy efficiency criteria. See the contact listed below for more information. Lastly, Until offers mail-in rebates on the purchase of a variety of Energy Star-certified products.

Program Overview

Implementing Sector: Utility
Category: Financial Incentive
State: New Hampshire
Incentive Type: Rebate Program
Web Site: http://unitil.com/energy-efficiency/energy-efficiency-programs/natural-gas-programs-rebates-assistance
Administrator: Gas Networks
Start Date:
Eligible Renewable/Other Technologies:
  • Equipment Insulation
  • Furnaces
  • Boilers
  • Programmable Thermostats
  • Energy Mgmt. Systems/Building Controls
  • Caulking/Weather-stripping
  • Duct/Air sealing
  • Building Insulation
  • Comprehensive Measures/Whole Building
  • Custom/Others pending approval
  • Other EE
Incentive Amount: Water Heater Rebates
Weatherization: 50% of costs
Natural Gas Furnaces: $300 - $450
Natural Gas Boilers: $1,000
Condensing Boilers: $1,000
On-Demand Tankless Water Heater: $500
Heat Recovery Ventilators: $500
Boiler Reset Controls: $225
Programmable Thermostats: Up to $25
Wireless Thermostats: Up to $85
Heat Recovery Ventilator: $500
Maximum Incentive: Home Performance with Energy Star: $4,000
Home Heating and Water Heating rebates: 50% of costs
Equipment Requirements: Natural Gas Furnaces: AFUE 95% or greater
Natural Gas Boilers: AFUE 95% or greater
Condensing Water Heater: 95% thermal efficiency or greater
On-Demand Tankless Water Heater: .94 energy factor or greater, with electronic ignition


This program has 4 incentives
Technologies: Programmable Thermostats
Sectors: Residential, Multifamily Residential
Parameters: The incentive has a maximum of $25.00, The incentive has a minimum of $85.00
Technologies: Furnaces
Sectors: Residential, Multifamily Residential
Parameters: The incentive has a maximum of 300.00 $/Unit, The incentive has a minimum of $450.00
Technologies: Boilers
Sectors: Residential, Multifamily Residential
Parameters: The incentive has a minimum of 1000.00 $/Unit
Technologies: Comprehensive Measures/Whole Building
Sectors: Residential, Multifamily Residential
Parameters: The incentive is 50.00 %, The incentive has a minimum of $4000.00


Name: Residential New Construction Program
Phone: (188) 830-1770
Email: ResEfficiency@unitil.com

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.