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Energy-Efficient Mortgage (EEM)

An Energy-Efficient Mortgage (EEM) allows borrowers to finance the cost of qualifying energy-efficient home improvements into their purchase or refinance mortgage. The financed improvement amount is determined by a cost-effectiveness test comparing improvement costs against projected energy savings. EEMs are available through FHA, conventional, and VA loan programs, each with distinct limits and requirements.

Key Takeaways

  • EEMs allow borrowers to finance energy-efficient improvements into their mortgage without requiring additional down payment for the improvement portion.
  • FHA, conventional (Fannie Mae/Freddie Mac), and VA loan programs each offer EEM options with different financing caps and cost-effectiveness requirements.
  • A qualified energy assessment -- typically a HERS rating -- is required to identify eligible improvements and verify cost-effectiveness.
  • Eligible improvements include insulation, windows, HVAC systems, solar panels, and other upgrades that measurably reduce energy consumption.
  • The financed improvement amount is limited by a cost-effectiveness test: the present value of projected energy savings must equal or exceed the improvement cost.
  • VA EEMs allow up to $6,000 in improvements without a cost-effectiveness test, with a general cap of $12,000 for amounts requiring the test.
  • EEMs apply to existing home purchases, refinances, and new construction transactions.

How It Works

What Is an Energy-Efficient Mortgage?

An Energy-Efficient Mortgage (EEM) allows borrowers to finance the cost of energy-efficient improvements into their mortgage loan without requiring additional down payment for the improvement portion. The core principle is straightforward: projected energy savings from improvements reduce monthly utility costs, freeing up income that can support a slightly larger mortgage payment. EEMs are available through FHA, conventional, and VA loan programs, each with distinct rules governing maximum financed amounts and qualification requirements.

FHA EEM vs. Conventional EEM vs. VA EEM

The three main EEM pathways differ in structure and borrower eligibility:

  • FHA EEM: Available to any FHA-eligible borrower. The cost of energy improvements can be added to the base loan amount, potentially exceeding standard FHA loan limits by up to the amount of cost-effective energy improvements. The improvements must pass a cost-effectiveness test, the total cost of improvements cannot exceed the present value of energy saved over the useful life of the improvements. No additional appraisal of the improvements is required beyond the standard FHA appraisal and the energy assessment.
  • Conventional EEM: Offered through Fannie Mae and Freddie Mac programs. Fannie Mae HomeStyle Energy allows financing of energy improvements up to 15% of the as-completed appraised value of the property. These programs may allow more flexible debt-to-income (DTI) ratio treatment, with some programs stretching the DTI ratio by up to 2% to account for anticipated energy savings.
  • VA EEM: Available to eligible veterans and service members using VA loan benefits. The VA allows up to $6,000 in energy-efficient improvements to be added to the loan amount without a cost-effectiveness test. Amounts above $6,000 require a cost-effectiveness determination, and the total addition is capped at $12,000 in most cases.

Energy Assessment and HERS Rating

An EEM requires an energy assessment conducted by a qualified home energy rater or assessor. The most common standard is the Home Energy Rating System (HERS) Index, administered by the Residential Energy Services Network (RESNET). A HERS rating evaluates the home in its current condition (or planned condition for new construction) and models projected energy consumption after proposed improvements are installed. The HERS Index score ranges from 0 to 150+, where a lower score indicates greater energy efficiency. A standard new home built to code scores approximately 100, while a net-zero energy home scores 0. The energy assessment report identifies which improvements will produce measurable energy savings and calculates the cost-effectiveness of each proposed upgrade. The borrower typically pays for this assessment, which ranges from $300 to $800 depending on the property and market.

Eligible Improvements

EEM programs cover a broad range of energy-related upgrades, provided they pass the applicable cost-effectiveness standard. Common eligible improvements include:

  • Insulation, attic, wall cavity, basement, and crawl space
  • Window and door replacements with higher-rated energy performance
  • HVAC system upgrades, high-efficiency furnaces, air conditioners, and heat pumps
  • Water heater replacements with high-efficiency or tankless units
  • Solar photovoltaic panel systems and solar water heating
  • Duct sealing and weatherstripping
  • Programmable thermostats and energy management systems
  • High-efficiency lighting retrofits

Cosmetic or non-energy-related improvements (such as kitchen remodels, landscaping, or roofing replacement solely for aesthetic reasons), are not eligible under EEM programs. If a roof replacement is needed to support solar panel installation, the structural portion may qualify.

How the Additional Amount Is Calculated

The amount that can be financed through an EEM is determined by a cost-effectiveness test. This test compares the total cost of the proposed energy improvements against the present value of the energy savings those improvements are expected to generate over their useful life. If the present value of projected savings equals or exceeds the cost of improvements, the full cost can be financed. The energy assessor provides this calculation as part of the HERS report or equivalent energy audit. For FHA EEMs, the cost of improvements is added directly to the base mortgage amount. For conventional EEMs under Fannie Mae HomeStyle Energy, the combined loan amount cannot exceed the lesser of the as-completed appraised value or the purchase price plus improvement costs, subject to conforming loan limits plus applicable EEM allowances.

Qualification Process and Eligible Transactions

EEMs apply to three transaction types: purchasing an existing home, refinancing a current mortgage, and financing a newly constructed energy-efficient home. For existing home purchases, the buyer identifies desired energy improvements, obtains an energy assessment, and the lender structures the EEM by adding improvement costs to the purchase mortgage. For refinances, the homeowner can roll improvement costs into the new loan balance. For new construction, the builder may demonstrate that the home meets or exceeds energy standards, and the EEM structure can finance the incremental cost of energy features above code-minimum construction. The borrower must qualify for the base mortgage under standard program guidelines, including credit score, DTI ratio, and down payment requirements. The energy improvement portion generally does not require additional down payment, and mortgage insurance calculations are typically based on the base loan amount rather than the combined EEM total in FHA programs.

Key Factors

Factors relevant to Energy-Efficient Mortgage (EEM)
Factor Description Typical Range
EEM Program Type FHA, conventional (Fannie Mae HomeStyle Energy), or VA -- each has different caps on financed improvement amounts and qualification rules. FHA: cost-effective amount above limits; Conventional: up to 15% of as-completed value; VA: $6,000-$12,000
HERS Index Score The Home Energy Rating System score measures home energy efficiency. Lower scores indicate greater efficiency and larger potential savings. 0 (net-zero) to 150+ (inefficient); code-built new home ~100
Cost-Effectiveness Ratio Present value of projected energy savings divided by total improvement cost. Must meet or exceed 1.0 for improvements to qualify. 1.0 or greater required for approval
Energy Assessment Cost Fee for a qualified HERS rater or energy assessor to evaluate the property and model projected savings from proposed improvements. $300-$800 depending on property and market
DTI Ratio Adjustment Some conventional EEM programs allow DTI stretching to account for anticipated energy savings reducing monthly utility costs. Up to 2% DTI stretch on select conventional programs

Examples

Homebuyer financing insulation and HVAC upgrades at purchase

Scenario: A borrower purchasing a 1970s ranch home for $265,000 obtained an FHA EEM to finance $8,500 in attic insulation and a high-efficiency HVAC system. The home energy assessment projected $1,400 in annual energy savings, exceeding the cost-effectiveness threshold. The total mortgage became $273,500.
Outcome: Monthly payments increased by $52 compared to the base loan amount. The borrower's utility bills dropped from $285/month to $168/month, producing net savings of $65/month from the first year. No additional down payment was required on the improvement amount.

Refinancing with an EEM to add solar water heating

Scenario: A homeowner with a $210,000 remaining balance refinanced into a conventional EEM at 6.25%, adding $6,200 for a solar water heating system. The HERS rater confirmed the improvement met the cost-effectiveness test with projected savings of $960 per year over the system's 20-year lifespan.
Outcome: The new mortgage balance of $216,200 carried a $38 higher monthly payment. The energy savings offset this increase within the first year. The improvement also raised the home's appraised value by $5,000 at the next assessment.

VA borrower financing weatherization improvements

Scenario: A veteran purchasing a $320,000 home used a VA EEM to finance $12,000 in new windows, weather stripping, and a smart thermostat. The energy audit projected $1,650 in annual savings. The VA allowed the full improvement cost to be rolled into the mortgage with no down payment.
Outcome: The veteran's total loan of $332,000 carried monthly payments $74 higher than the base amount. Utility costs dropped by approximately $138/month, resulting in net monthly savings of $64. The improvements also reduced the home's carbon footprint by an estimated 22%.

Common Mistakes to Avoid

  • Skipping the required home energy assessment before applying

    EEM financing requires a certified energy audit (typically a HERS rating) to validate projected savings. Without it, the lender cannot determine the eligible improvement amount, and the application stalls.

  • Assuming all energy upgrades automatically qualify for EEM financing

    Only improvements that pass the cost-effectiveness test qualify. Upgrades whose costs exceed projected energy savings over their useful life will be excluded, leaving the borrower to fund them separately.

  • Confusing an EEM with energy tax credits or utility rebates

    EEMs are mortgage products, not incentives. They can be combined with tax credits and rebates, but borrowers who assume they are the same thing may miss out on stacking benefits worth thousands of dollars.

  • Failing to get contractor bids before locking the loan amount

    The improvement costs must be documented and approved before closing. Vague estimates can result in either underfunding (requiring out-of-pocket costs) or overfunding (which the lender may not allow).

Documents You May Need

  • Home Energy Rating System (HERS) report or equivalent energy assessment
  • Detailed cost estimate for proposed energy-efficient improvements
  • Standard mortgage application (Uniform Residential Loan Application, Form 1003)
  • Property appraisal report
  • Contractor bids or proposals for each improvement category
  • Proof of contractor licensing and insurance
  • Specifications and energy ratings for proposed equipment (HVAC, windows, etc.)
  • Completion certificate or inspection report after improvements are installed

Frequently Asked Questions

Do I need a separate loan for energy improvements with an EEM?
No. The EEM structure rolls the cost of qualifying energy improvements directly into the primary mortgage. This eliminates the need for a separate home improvement loan or personal loan and typically provides a lower interest rate than unsecured financing options.
Does an EEM require a larger down payment?
Generally, no. The energy improvement portion of an EEM does not require additional down payment. The down payment is calculated based on the base purchase price or appraised value under the applicable loan program rules, not on the combined amount including energy improvements.
What happens if the improvements cost more than the energy savings justify?
If the total cost of proposed improvements exceeds the present value of projected energy savings (failing the cost-effectiveness test), only the cost-effective portion can be financed through the EEM. The borrower would need to pay for any remaining improvements out of pocket or reduce the scope of the project.
Can I use an EEM for a home I already own?
Yes. EEMs are available for refinance transactions. You can refinance your existing mortgage and add the cost of qualifying energy improvements to the new loan balance, subject to the same energy assessment and cost-effectiveness requirements that apply to purchase EEMs.
Who conducts the energy assessment?
The energy assessment must be performed by a qualified home energy rater, typically certified through the Residential Energy Services Network (RESNET) or an equivalent body. The rater evaluates the property, models projected energy consumption, and calculates the cost-effectiveness of proposed improvements.
Are solar panels eligible for EEM financing?
Yes. Solar photovoltaic systems and solar water heating systems are eligible improvements under EEM programs, provided the installation passes the applicable cost-effectiveness test. The energy assessment must document the projected energy savings from the solar installation.
How does an EEM differ from a standard renovation loan?
An EEM is specifically limited to energy-related improvements and requires an energy assessment with cost-effectiveness documentation. Renovation loans such as the FHA 203(k) cover a broader range of improvements including non-energy upgrades. However, energy improvements that qualify for an EEM may also be included in a renovation loan if the borrower prefers a combined approach.

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