Colorado Natural Gas - Energy Efficiency Rebate Program

January 25, 2023


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.

Program Overview

Implementing Sector: Utility
Category: Financial Incentive
State: Colorado
Incentive Type: Rebate Program
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Water Heaters
  • Furnaces
  • Boilers
  • Programmable Thermostats
  • Duct/Air sealing
  • Building Insulation
Incentive Amount: Residential Customers
Furnace: $400
Smart Thermostat: $50
Water Heater: $300

Commercial Customers
Equipment Requirements: See program website.


Name: CLEAResult Market Outreach Specialist
Organization: Colorado Natural Gas
Phone: (720) 439-4342
Name: Residential Energy Audit Program
Organization: Colorado Natural Gas
Phone: (800) 790-8853

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.