Every home is different. Costs typically range from under $5,000 to over $12,000, with average energy savings of 20 to 25%. Alternatively, you might try some "do-it-yourself" energy efficiency improvements or invest in a deep energy retrofit to reduce energy use by 50% or more.
Rebates up to $4,000 (eligibility based on fuel use per square foot) are available from NHSaves on a first-come-first-serve basis. If interested, apply immediately. Weatherize Hanover and our associated contractors are available to all homeowners whether they participate in the rebate program or not.