Insulation – $0.30 – $0.80/sq. ft. depending on existing R-value, heat type, classification of home. Home must use electric heat.
Windows – $2 – $16 per sq. ft. of window space depending on type of heating & home structure. Must meet U Factor of .30 or better. Must be replacing single pane or metal frame windows. Home must use electric heat.
Heat Pump Water Heaters – $300-$700 depending on efficiency level