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Colorado Natural Gas - Energy Efficiency Rebate Program

Federal Government
Savings Category 
Equipment Insulation
Water Heaters
Programmable Thermostats
Duct/Air sealing
Building Insulation
Comprehensive Measures/Whole Building
Other EE
Commercial Cooking Equipment
Maximum Rebate 

Hot Water Insulation/Infiltration Measures: minimum purchase of $40
Programmable Thermostats: 1 per address
Insulation: $300

Program Info
Sector Name 
Program Type 
Rebate Program
Rebate Amount 

Energy Assessment: Up to $200
Furnace: $300
Boiler: $100-$300
Proper Sizing of Boiler/Furnace: $50
Water Heater (Tankless): $300
Programmable Thermostat: $25
Insulation and Air Sealing: 30% of cost up to $300
Hot Water Insulation/Infiltration Measures: $25
Low Flow Sprayer (Commercial Only): $25


Colorado Natural Gas offers the Excess is Out Program for residential and commercial customers in Colorado. Incentives are available for purchasing and installing energy efficient furnaces, boilers, hot water heaters, programmable thermostats, insulation, tank wrap, pipe wrap, caulk and weatherization measures. Under this offering, home energy evaluations, insulation rebates and air sealing rebates are only available to residential customers. All equipment must meet certain energy efficiency standards listed on the program web site.  Applications must be submitted (with a copy of the receipt/invoice) within 60 days of product purchase date. Rebates apply to purchases made after January 1 of the program year and extend until funding expires. Increased incentives are available to customers who participate in Recharge Colorado, a state incentive program targeting energy efficiency. Consult Colorado Natural Gas by phone or visit the web site listed above for program specifics.