What if a customer wants to replace windows but does not want to install insulation or upgrade common-area lighting?
To qualify for windows incentives, Energy Trust requires properties to meet minimum insulation levels. If levels are below requirements—R-11 in the floor and R-19 in the attic—insulation is required. If insulation is not needed, Energy Trust requires common-area lighting be upgraded to high-efficiency fixtures. A windows-only incentive is only permitted if attic and floor insulation are not needed and there is no opportunity to upgrade common-area lighting.