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Residential High Efficiency Natural Gas Water Heater

Instant Discount Program


You can cut the cost of heating the water in your home by replacing your old inefficient water heating system with new energy-efficient equipment.  The Energy Efficiency Fund, an Energize CT partner, in association with Connecticut Natural Gas offers instant discounts* for replacing or installing new systems. You may qualify for the following:



Minimum Efficiency Levels -
Instant Discount Schedule
Eligible Equipment Type and Minimum Efficiency for
Instant Discount
Instant Discount
Per Unit*
ENERGY STAR certified Natural Gas Tankless Water Heater (.94 EF1 or greater with electronic ignition) $300
ENERGY STAR certified Natural Gas Standalone Condensing Water Heater (.95 TE2or greater) $300

1 EF – Energy Factor
2 TE – Thermal Efficiency 



All installations must be completed by a licensed contractor and/or plumber to qualify for the instant discount.  Click here for the CT Department of Consumer Protection Online License Verification website.


*Instant Distributor Discounts Now Available:

  • HVAC equipment distributors can now automatically apply the Energize CT instant discount to the price they charge your contractor for qualified equipment.
  • Multiple instant discounts for the same unit (equipment serial number) will not be accepted.
  • Licensed installation contractors can purchase qualified high-efficiency equipment that receives the instant discount at participating distributors found on

For more information contact:

  • 877-WISE USE

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