CO Rebate Program

Colorado Natural Gas - Energy Efficiency Rebate Program

AI summary · 7/12/2026

Colorado Natural Gas offers rebates up to $500 for high-efficiency furnaces (AFUE ≥ 95%), $500 for boilers (AFUE > 95%), $300 for tankless water heaters (UEF ≥ 88%), $100 for ENERGY STAR-certified smart thermostats, and $300 for insulation improvements in attics, crawlspaces, floors, or walls meeting 2021 IECC specifications. You can schedule a free home energy assessment by calling 1-833-934-1416 or applying for rebates through downloadable or electronic forms on the program website. Residential customers can also purchase discounted energy-efficiency products through the DIY Marketplace.

Colorado Natural Gas rebate program provides clear financial incentives for your customers: $500 furnace rebates, $500 boiler rebates, $300 tankless water heater rebates, $100 smart thermostat rebates, and $300 insulation rebates for work meeting 2021 IECC specifications. Customers apply through downloadable or electronic rebate forms, and you can direct them to CLEAResult at 800-790-8853 or cngee@clearesult.com for custom energy-efficiency projects involving commercial, industrial, multifamily, or large single-family properties. Rebates are available while funds last.

The program is administered by CLEAResult (800-790-8853; cngee@clearesult.com) and covers residential and commercial customers of Colorado Natural Gas in Colorado. Residential incentives include fixed rebates for furnaces, boilers, water heaters, thermostats, and insulation, plus free home energy assessments (1-833-934-1416). Commercial and industrial customers access custom incentives through the program administrator. The program operates a DIY Marketplace for additional product discounts and targets single-family, multifamily, commercial, and industrial properties with natural gas heating systems.

Program details

Program ID
3308
Last updated
8/8/2024

Eligibility

Sectors
commercial industrial residential federal government
Technologies
water heaters furnaces boilers programmable thermostats duct/air sealing building insulation

Program summary

Colorado Natural Gas offers the Excess is Out Program for residential and commercial customers in Colorado.

Residential Customers

For residential customers, begin by requesting a free energy audit from Colorado Natural Gas. This service offers a complete evaluation of your home's energy efficiency. The auditor will install natural gas conservation measures at no cost to you. To be eligible for an audit customers must meet the following criteria:

  • You are a residential customer of Colorado Natural Gas
  • Your home is heated with natural gas
  • Your home is at least 10 years old
  • You have not received an audit from this program within the past 5 years

Call 800-790-8853 to schedule an energy audit.

Colorado Natural Gas also offers rebates to residential customers for energy efficient furnaces, thermostats, and water heaters. See the program website above for complete information.

Commercial Customers

Commercial Customers are eligible for walk-through energy efficiency audits that include the installation of weatherstripping, faucet aerators, shower heads, and spray valves at no cost. Please contact CLEAResult’s Market Outreach Specialist at 720.439.4342 to learn how your business can start saving energy today.

Contact & resources

Please verify current program details with the administering agency before making any financial decisions.

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