HEEHRA & HOMES Rebate Stack Calculator

How HEEHRA and HOMES stack for home electrification

HEEHRA and HOMES solve different parts of the same home electrification budget. HEEHRA lowers the upfront cost of eligible electric appliances and supporting upgrades for income-qualified households, while HOMES ties the incentive to whole-home energy savings after a project performs well enough to qualify. Because both programs are designed to sit alongside state-run implementation, homeowners often need a quick way to test how an upgrade package might look before they speak with a contractor or a program administrator. This calculator pulls the rebate logic into one place so you can estimate how much of a heat pump, water heater, panel upgrade, or weatherization project may be offset by the federal incentives.

Income relative to area median income, the measure you choose, and the savings your project can document all shape the final rebate. HEEHRA uses income tiers to determine whether a household gets full, partial, or no coverage, and each appliance category has its own cap. HOMES then looks at the savings band and the remaining eligible project cost, with low-income households receiving higher shares and higher caps. Understanding both layers matters when you are comparing a straight equipment replacement with a deeper retrofit, especially if another state or utility rebate is already on the table.

The calculator follows the DOE-style structure reflected in early program guidance and state planning documents. You can change the savings percentage, add a state or utility bonus, and subtract other incentives you have already used. The output separates the HEEHRA rebate, the HOMES rebate, the bonus amount, and the net project cost so that homeowners, energy advisors, and contractors can discuss the next step with the same numbers.

Calculation methodology for HEEHRA and HOMES rebates

The calculator first checks HEEHRA income eligibility by comparing household income to area median income. The ratio is computed as:

If , your household falls into the low-income tier; if , you are moderate-income; above that, you are higher-income. HEEHRA coverage factors are then set to 100%, 50%, or 0% respectively. Each equipment type has a statutory cap. The eligible HEEHRA rebate is the minimum of the cap and the product of project cost and coverage factor. We also ensure that HEEHRA cannot exceed the remaining project cost after subtracting any other incentives you already claimed.

Next, the model estimates HOMES performance rebates. We interpret the energy savings percentage input as modeled or measured savings. Projects that save between 20% and 35% receive the lesser of $2,000 or 50% of eligible costs (doubled for low-income households). Projects exceeding 35% savings receive the lesser of $4,000 or 80% of costs (again, doubled for low-income households). Costs eligible for HOMES are reduced by HEEHRA support because DOE guidance prevents stacking on the same measure beyond the net expenditure. The HOMES rebate is also constrained so that total rebates never exceed the remaining project cost.

Finally, state or utility bonuses are added, while previously claimed incentives are subtracted from the cost basis to avoid double-counting. The tool computes net out-of-pocket costs and displays whether stacking is limited by statutory caps. The CSV download mirrors that breakdown if you want to share the scenario with installers, housing counselors, or financial institutions assessing heat pump loan applications.

Worked example: a low-income heat pump project

Imagine a family of four earning $68,000 in a metro area where the AMI is $90,000. Their ratio is , placing them in the low-income tier. They are planning to install a $14,000 cold-climate heat pump expected to cut whole-home energy usage by 38%. A local green bank is offering an extra $1,000 incentive, and they have not yet taken any other rebates. The calculator gives them the full $8,000 HEEHRA cap because the household qualifies for 100% coverage and the cap is lower than the project cost. For HOMES, a low-income household with more than 35% savings can earn up to $8,000, but the calculator applies the rebate to the remaining $6,000 after HEEHRA. At a 1.6 share, the theoretical HOMES amount would be $9,600, but the calculator limits the rebate to the remaining project balance, so HOMES also lands at $6,000. After the $1,000 bonus is added, the combined incentives reach the full $14,000 remaining project cost, leaving the family with no out-of-pocket balance. That result is the kind of outcome a contractor or housing counselor can use to judge whether the project can move forward quickly.

Contrast that with a moderate-income household at 120% of AMI completing a $9,000 heat pump water heater project with 25% expected savings and $500 already received from a utility program. The HEEHRA coverage factor is 50%, so the rebate is capped at the lesser of $1,750 and $4,250 (half of cost), yielding $1,750. Eligible cost for HOMES is $6,750. With savings between 20% and 35%, the moderate-income cap is $2,000, but the 50% cost-share limit produces $3,375, so the HOMES rebate becomes $2,000. Total rebates equal $3,750. After accounting for the previously claimed $500, the family pays $4,750 out of pocket and can see exactly why HOMES stopped at its cap.

Detailed HEEHRA and HOMES formulas

This table summarizes the formulas the calculator applies to the HEEHRA rebate, the HOMES rebate, and the total incentive stack.

Practical planning guidance for HEEHRA and HOMES projects

Beyond the pure math, stacking HEEHRA and HOMES rebates involves administrative sequencing. Many states will run HEEHRA as a point-of-sale rebate through contractors or retailers, while HOMES may require submitting post-installation documentation or pulling smart meter data for measured savings. Households should coordinate with participating contractors early. Ask whether the installer can apply the HEEHRA discount on the invoice, whether blower-door tests or energy modeling are included, and how data will be collected to confirm savings. Our calculator’s breakdown helps you set expectations and plan for cash flow because some states may pay HOMES rebates after the project is verified, meaning you might finance the full cost temporarily even if rebates eventually cover most of it.

State energy offices are also layering bonus incentives for multifamily buildings, disadvantaged community projects, or early electrification adopters. Use the bonus field to incorporate those adders. Be aware that stacking federal tax credits, such as the Residential Clean Energy Credit or the Energy Efficient Home Improvement Credit, may affect your net tax liability but do not reduce the project cost basis for rebates; however, programs may prevent the same cost elements from being reimbursed twice. Consult with a tax professional for edge cases such as mixed-use properties or landlords passing benefits to tenants.

Electrification can unlock energy savings beyond utility bills. Heat pumps improve indoor air quality and eliminate combustion risks, while panel upgrades prepare your home for future EV charging. The HOMES program incentivizes comprehensive retrofits with inclusive metrics, encouraging you to tackle insulation, air sealing, and smart controls alongside major equipment. By modeling different savings percentages in the calculator, you can see how investing in deeper retrofits moves you into higher HOMES brackets. Pairing the insights with financing tools—green mortgages, on-bill repayment, or credit union loans—can accelerate the transition.

Scenario comparison for HEEHRA and HOMES

The table below compares three household profiles so you can see how income tier and savings percentage change the rebate stack. You can adjust the inputs in the calculator to mirror similar situations in your own program outreach or contractor pipeline.

Limitations and assumptions for this rebate calculator

This calculator simplifies HEEHRA and HOMES program rules to provide quick planning guidance. Actual state program designs may introduce additional constraints, such as per-household lifetime caps, multifamily allocation adjustments, contractor participation requirements, or proof-of-income verification. We assume that the selected measure qualifies for HEEHRA and that HOMES applies to the full project scope; in practice, mixed-fuel homes or partial retrofits may require sub-metering or more granular modeling. The energy savings percentage should be derived from a certified energy audit or the DOE’s energy modeling protocols. Because rebate funding is finite, some states may ration payments or adjust rebate levels over time. Always confirm with your state energy office or program administrator before signing contracts. The calculator is meant as an educational planning aid, not a guaranteed offer.

Nevertheless, by presenting an accessible breakdown, the tool helps households advocate for inclusive program design, helps contractors estimate pipeline financing needs, and gives community organizations a starting point for client coaching. Use the outputs as a conversation starter and revisit as regulations evolve.

How to use this HEEHRA and HOMES calculator

1. Enter Household Income (USD) using the same annual basis you will use for AMI comparisons.
2. Enter Area Median Income (USD) for the household’s location or program area.
3. Enter Total Project Cost (USD) for the electrification work you want to test.
4. Run the HEEHRA and HOMES estimate, then compare it with a second savings or bonus scenario before you decide whether to proceed.