Air Sealing: $420
Duct Sealing: $300
Attic/Wall/Floor Insulation: $500 each (unless otherwise noted on website)
AC/Heat Pump: $1,600
Attic Insulation: $0.005 - $0.03/R-value per sq. ft.
Wall Insulation: $0.03 - $0.05/R-value per sq. ft.
Floor Insulation Over Unconditioned Space: $0.015/R-value per sq. ft.
Duct Insulation in Unconditioned Space: up to $300
Rim Joist Insulation: $20
Air Sealing: $84 per ACH reduction
Duct Sealing: $50 per 100 cfm reduction
Windows/Doors: $100 per unit
Columbia Water and Light, a municipal utility, offers rebates to its residential customers who make certain energy efficient improvements to the home. Under the Home Performance with Energy Star program, prescriptive rebates are available for windows, doors, air conditioners, heat pumps and building insulation while rebates for air duct sealing are based on performance tests. Newly constructed homes can only apply for the New Home Energy Star Rebate.
In order to participate in the program, customers must first have a Comprehensive Home Assessment performed by an approved contractor. Only improvements recommended by the assessment report are eligible for rebates. Please see the program web site for additional details and application information.