Begin to unlock your home’s energy savings by receiving an energy audit from Colorado Natural Gas. This free service offers a complete onsite energy evaluation of your home, including infrared imaging and blower door testing. Our trained energy auditor will install natural gas conservation measures including energy efficient showerheads and faucet aerators, window and door weatherstripping, pipe insulation, and smart thermostats all at no cost to you.

Your home may qualify for additional customized air sealing in the attic and other areas of your home that need it most. Air-sealing audits are also free and will help you better regulate the temperature of your home, which can help lower your energy bills and increase your family’s comfort all year round.

If you meet the following criteria, call 800.790.8853 or click here to sign up and receive a call for residential energy audit scheduling:

  • 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

Let us know how we’re doing in communicating our efficiency programs.

Colorado Natural Gas offers rebates, programs and services to help you save money and be more energy efficient.


AFUE ≥ 95%

By upgrading to a 95% efficient furnace, you can bring down the cost of your heating bill to save energy and get cash back with a rebate.


ENERGY STAR-Certified Smart Thermostat

Smart thermostats can be programmed to control the temperature of your home based on your schedule, and some can automatically learn your schedule to keep you comfortable when you’re home, and adjust when you’re away.


Tankless, UEF ≥ 88%

Tankless water heaters can provide from two to four gallons of hot water per minute and, because don’t store water to keep hot when it’s not being used, you save energy and never run out of hot water!

Custom Energy Efficiency Program

CNG’s Commercial & Industrial Energy Efficiency Program promotes energy efficiency measures for both small and large commercial customers, including multifamily customers.

Services include walk-through audits with direct installation measures such weatherstripping, faucet aerators, showerheads, and spray valves at no cost.

Colorado Natural Gas will also support free technical studies and provide cash incentives for customers interested in pursuing more extensive energy efficiency upgrades. These upgrades may include projects like:

  • High-efficiency gas heating systems
  • Boiler/Burner improvements
  • Water heating system improvements
  • Waste heat recovery
  • Ceiling/Wall insulation
  • Restaurant Equipment
  • Steam trap replacements

Please contact CLEAResult’s Market Outreach Specialist at 720.439.4342 to learn how your business can start saving energy today.

Your free Water Efficiency Kit is a great first step to saving water, using less energy and lowering your monthly bills.

Income Qualified Program

To learn more about CNG’s LEAP customers can participate in the Weatherization Assistance Program, please click here.