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Insulation Rebates Up to $8,600

For insulation upgrades completed on or after October 1, 2026

REBATE CLAIM FORMFind an Installer
 
Insulation Rebates Any Income Moderate Income Low Income
Small Attic, Wall, and/or Basement
250 – 499 square feet insulated in each zone*		 $1,000
per zone*		 $1,500
per zone*		 $2,000
per zone*
Large Attic, Wall, and/or Basement
At least 500 square feet insulated in each zone*		 $2,000
per zone*		 $3,000
per zone*		 $4,000
per zone*
Mobile Home Underbelly
At least 500 square feet insulated		 $3,000 $4,000 $5,000
Lifetime Limits One Insulation Rebate Per Zone*, 5,000 for mobile homes, $8,000 for all other homes

*Zones of insulation:

  1. Attic – The combination of all attics and/or cathedral ceilings, including all floors, walls and slopes that are exposed to any attic area.
  2. Wall – The combination of all exterior (framed) walls of a home (excludes mobile home walls)
  3. One of the following:
    1. Basement – The combination of all floors that separate conditioned space from unconditioned space or outside air (e.g., a basement ceiling) and/or any concrete foundation wall, including the floor of a mobile home on a foundation.
    2. Mobile Home Underbelly – The space beneath the floor of a mobile home that is not on a foundation.
Air Sealing Rebates and Zones Any Income Moderate Income Low Income
All accessible attic air leaks sealed. $150 $225 $300
All accessible basement air leaks sealed $100 $150 $200
Air sealing performed in the living space, including reducing drafts around doors and windows $50 $75 $100
Lifetime Limit One Air Sealing Rebate Per Zone Per Building or Condominium

Efficiency Maine Rebates

Upgrade Low Income Moderate Income Any Income
Air Sealing and/or Insulation 80% of project cost up to an $8,000 rebate 60% of project cost up to a $6,000 rebate 40% of project cost up to a $4,000 rebate
Lifetime Limits $8,000 in insulation and air sealing rebates per condominium or building $6,000 in insulation and air sealing rebates per condominium or building $4,000 in insulation and air sealing rebates per condominium or building

Efficiency Maine Rebate Eligibility

  Low Income Moderate Income Any Income
Homeowner

Eligibility verification required for at least one homeowner or homeowner’s household member:

  • HEAP,
  • SNAP,
  • TANF, or
  • MaineCare participants

Eligibility verification required:

  • Homeowner’s Adjusted Gross Income up to $70,000 for individual tax filers, or $100,000 for joint filers
 Homeowners of any income
  Homeowner:

  • Paid difference between total project cost and rebate amount
 Homeowner EITHER:

  • Paid total project cost (and then received rebate), OR
  • Paid difference between total project cost and rebate amount
 Homeowner EITHER:

  • Paid total project cost (and then received rebate), OR
  • Paid difference between total project cost and rebate amount
Building Type Single-family house, two-unit duplex, condominium, or mixed-use building with one or two housing units and no commercial electrical meter(s). Click here for all other building types. Single-family house, two-unit duplex, condominium, or mixed-use building with one or two housing units and no commercial electrical meter(s). Click here for all other building types. Single-family house, two-unit duplex, condominium, or mixed-use building with one or two housing units and no commercial electrical meter(s). Click here for all other building types.
Building Construction Upgrade not part of construction of new home or addition Upgrade not part of construction of new home or addition Upgrade not part of construction of new home or addition
Building Occupancy Owner-occupied principal residence Owner-occupied principal residence Any
Building Location Maine Maine Maine
Insulated Space Heated the entire heating season Heated the entire heating season Heated the entire heating season
Installer Must be installed by an Efficiency Maine Residential Registered Vendor for insulation and air sealing Must be installed by an Efficiency Maine Residential Registered Vendor for insulation and air sealing Must be installed by an Efficiency Maine Residential Registered Vendor for insulation and air sealing
Timeframe Rebate claim form emailed or postmarked within six months of project completion Rebate claim form emailed or postmarked within six months of project completion Rebate claim form emailed or postmarked within six months of project completion
Upgrade Upgrade installed in accordance with Weatherization Requirements Checklist. Health & safety cost capped at 25% of total air sealing and insulation project cost. Upgrade installed in accordance with Weatherization Requirements Checklist. Health & safety cost capped at 25% of total air sealing and insulation project cost. Upgrade installed in accordance with Weatherization Requirements Checklist. Health & safety cost capped at 25% of total air sealing and insulation project cost.
Eligible for Efficiency Maine Home Energy Loan? Yes Yes Yes

How to Get a Rebate

  1. Verify eligibility for enhanced low- and moderate-income rebates (if applicable)
  2. Hire/contract with a Residential Registered Vendor
  3. Complete upgrade
  4. Submit rebate claim form
  5. Efficiency Maine sends rebate check

Terms and Conditions

Only one rebate will be paid for any given upgrade. Efficiency Maine does not warrant the performance of rebated upgrades. Program and incentives subject to change or termination. Please allow six weeks for rebate processing. Incomplete information may delay or disqualify your rebate. Efficiency Maine reserves the right to verify installation and perform an inspection.