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Questar Gas - Residential Energy Efficiency Rebate Programs

Multifamily Residential
Savings Category 
Clothes Washers
Water Heaters
Programmable Thermostats
Duct/Air sealing
Building Insulation
Other EE
Tankless Water Heater
Maximum Rebate 

Limit of two rebates per appliance type

Program Info
Sector Name 
Questar Gas
Program Type 
Rebate Program
Rebate Amount 

Gas Furnace: $200 - $400
Gas Storage Water Heater: $50-$100
Gas Condensing Water Heater: $350
Gas Boiler: $400 -$600
Tankless Gas Water Heater: $350
Clothes Washer: $50
Windows: $0.95/sq. ft.
Insulation (Wall): $0.30/sq. ft.
Insulation (Floor): $0.20/sq. ft.
Insulation (Attic): $0.07 - $0.25/sq. ft.
Duct Sealing/Insulation: $100 + $5.25/ln. ft.
Air Sealing: $100 + $.20/sq. ft.
Programmable Thermostat: $30
In-Home Energy Audit: Discounted to $25


Questar Gas provides rebates for energy efficient appliances and heating equipment, and certain weatherization measures through the ThermWise program. This equipment includes clothes washers, water heaters, furnaces, boilers, windows, insulation and programmable thermostats. A reduced-cost home energy audit is also available to participating customers. To qualify, the appliances must run on gas and must meet the minimum efficiency levels stated on the program web site. The web site also maintains a list of appliance models which meet the requirements and local vendors who sell them. Certain equipment must be installed by an authorized ThermWise contractor. Follow all instructions on the program application and see terms and conditions for other program details.