High Efficiency Heating, AC and Plumbing Systems

Efficiency Maine offers a variety of home energy loans to help customers pay for energy upgrades. Maine homeowners can borrow up to $15,000 over 10 years with interest rates as low as 4.99% APR. There are no additional fees associated with these loans.



  • Homeowners of any income
  • Minimum credit score depends on loan type
  • Maximum debt-to-income ratio depends on loan type
  • No recent bankruptcies, foreclosures, or repossessions, depending on loan type


  • 1-4 units
  • Occupied year-round (not a vacation home, garage, or barn)
  • Located in Maine, PACE loans only available in PACE Towns


  • Required: an upgrade eligible for a Home Energy Savings Program or Low-Income Initiative rebate
  • Optional: Solar PV
  • Optional: Health and safety measures if necessary to complete the upgrade (not to exceed 25% of the loan). For Example: Moisture/radon mitigation before air sealing, vermiculite removal before insulation, knob and tube wiring removal before insulation, leaky roof repairs before attic insulation, chimney lining before boiler/furnace replacement, electrical panel upgrade before heat pump installation
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Federal Housing Administration (FHA) through its PowerSaver loan program offers three financing options for homeowners to make energy efficiency and renewable energy upgrades in their residences. For all three PowerSaver products, borrowers must select from a list of approved PowerSaver lenders.


Homeowners must have following requirements to be eligible for the program:

  • Minimum credit score of 660
  • Maximum total debt to income ratio of 45% (monthly income divided by monthly debt payments)
  • Maximum combined loan-to-value: 100%
  • Property type: One-unit, owner-occupied, principal residence properties only
  • Appraisal requirement: exterior-only inspection appraisal or other FHA method of valuation
  • PowerSaver insures lien position in the first place, or second place, and also insures loans without lien, as long as the loan amount is less than $7,500.

Eligible Measures

Eligible home energy upgrades include, but are not necessarily limited to, the following:

  • A whole home upgrade through Home Performance with ENERGY STAR
  • Insulation and air sealing
  • Replacing doors and windows
  • Upgrading heating, ventilation, and air-conditioning systems and hot water systems
  • Home automations systems and controls (e.g., smart thermostats)
  • Installing solar photovoltaic (PV) systems, solar thermal hot water systems, small wind power, or geothermal heat pumps

PowerSaver Home Energy Upgrade—Up to $7,500

This unsecured consumer loan is intended for smaller projects (e.g., insulation, air and duct sealing, water heating, replacing heating and cooling equipment, etc.). It does not require a home appraisal or lien on the property. Single-family homeowners may qualify for the loan if they have manageable debt and a credit score of 660 or higher. Interest rates vary, but typically range from 4.99% to 7.75%.

PowerSaver Second Mortgage (Title I)—Up to $25,000

This Title I loan is intended for financing larger retrofit projects, including energy efficiency, PV, solar hot water, geothermal, or other renewable energy projects. A home appraisal or equity is generally not required, but PowerSaver lenders may request it if required by their investor. Borrowers cannot currently have an existing home equity loan, a second lien, or second mortgage to qualify for this product. Interest rates vary but typically range from 4.99% to 9.99%, and the maximum loan term is 20 years.

PowerSaver Energy Rehab (203(k))—First mortgage up to FHA loan limits

This 203(k) loan is for home purchase or refinance, targeting either home buyers wishing to combine home improvements with a home purchases or to homeowners wishing to include home improvements when refinancing an existing mortgage. It is FHA-insured up to 100% for a home purchase or refinance, plus the cost of a home improvement project. Current loan limits for a single-unit property vary by area from $217,500 to $625,000 (higher amounts are permitted for two-, three- and four-unit properties); specific loan limits for an area can be found at this website. In order to qualify as a 203(k) PowerSaver loan, at least $3,500 of the home improvements must consist of eligible PowerSaver measures.

The two types of PowerSaver 203(k) loans are Standard and Streamlined. Standard 203(k) loans are for major improvements, where a home improvement project costs at least $5,000 and includes $3,500 in energy upgrades. The Streamlined 203(k) loans are for minor home improvements, where the home improvement project cost must not exceed $35,000. A HUD consultant is only required for oversight of home improvements for Standard 203(k) loans.

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Efficiency Vermont is increasing its rebates for Cold Climate Heat Pumps and Heat Pump Water Heaters for a limited time.

Product Category Original Offer May 1st Offer
CCHP ≤ 2 ton $300 $400
CCHP > 2 ton $400 $500
HPWH Tier 1 and 2* Up to $300 Up to $300
HPWH Tier 3* Up to $500 Up to $600

Please note that these offers may be combined with other Partner Offers, such as Green Mountain Power’s additional $100 for GMP customers installing CCHPs.

*Tiers based on the Northwestern Energy Efficiency Alliance (NEEA) Advanced Water Heater Specification and must be ENERGY STAR® certified.

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