Heat Pump It Up with Federal Geothermal Tax Credits

What Are the Federal Tax Credits for Heat Pump and Geothermal Upgrades?

Federal tax credits for heat pump and geothermal upgrades are available to qualifying homeowners through December 31, 2025, and can significantly reduce the out-of-pocket cost of upgrading to more energy-efficient heating and cooling systems. Here's a quick breakdown:

• Section 25C covers air-source heat pumps that meet ENERGY STAR Most Efficient standards — up to $2,000 per year, as part of a $3,200 annual total.
• Section 25D covers geothermal (ground-source) heat pumps with a full 30% credit and no annual dollar ceiling, and unused credit can roll forward to future tax years.
• Both credits are claimed using IRS Form 5695 when you file your federal taxes for the year the system was installed.
• These credits apply to primary residences and qualifying second homes — but not to rental properties where the taxpayer doesn't live.
• Starting with 2025 installations, eligible products must include a Qualified Manufacturer Identification Number (QMID) on your tax return.

Whether you just installed a new system or are planning an upgrade before the deadline, understanding which credit applies — and how to stack them — can mean real savings come tax time.

If you own a home in Kitsap County or anywhere on Washington's Olympic Peninsula, this guide walks you through everything you need to know to take full advantage of both programs.

I'm Ernie Bogue, co-owner of West Sound Comfort Systems, and after more than three decades helping homeowners across the Pacific Northwest upgrade their heating and cooling systems, I've seen how understanding federal tax credits for heat pump and geothermal upgrades can make energy-efficient systems far more accessible. Let's break down exactly how these credits work — and how to make the most of them.

Understanding the Energy Efficient Home Improvement Credit (25C)

When we talk about the most common way to save on high-efficiency heating, we’re usually looking at the Energy Efficient Home Improvement Credit, known to tax pros as Section 25C. This credit was significantly expanded by the Inflation Reduction Act to help folks like you in Bremerton or Silverdale transition away from old, expensive oil furnaces or inefficient electric baseboards.

Under Section 25C, you can claim a tax credit equal to 30% of the total project cost for an air-source heat pump. There is a specific annual limit of $2,000 for heat pumps and heat pump water heaters. However, the "total" annual cap for this credit is actually $3,200 if you combine your heat pump with other upgrades like insulation or a new electrical panel.

It’s important to note that this is a nonrefundable credit. This means it can reduce the taxes you owe down to zero, but the IRS won't send you a check for any "leftover" credit amount. Because the $2,000 limit resets every year through December 31, 2025, many of our customers choose to phase their projects to maximize their savings. If you're ready to start, we offer expert Heat Pump Installation & Replacement in Bremerton WA to ensure your new system meets all federal requirements.

Qualified Products for Federal Tax Credits for Heat Pump and Geothermal Upgrades

Not every heat pump at the hardware store qualifies for these savings. To protect taxpayers and ensure real energy savings, the IRS requires equipment to meet high-efficiency standards. As of April 2026, the current requirements focus on the ENERGY STAR Most Efficient designation.

For air-source heat pumps, the equipment must generally meet the highest efficiency tier established by the Consortium for Energy Efficiency (CEE). This includes specific ratings for SEER2 (cooling efficiency), HSPF2 (heating efficiency), and EER2. In our neck of the woods—the "Northern Tier"—cold-climate performance is often a requirement for ducted systems. Whether you are looking at a central split-ducted system or a ductless mini-split for a home in Poulsbo, the unit must be on the approved list to qualify. To keep your system running at these peak efficiency levels, we recommend regular Heat Pump Service & Maintenance in Poulsbo WA.

Maximizing Federal Tax Credits for Heat Pump and Geothermal Upgrades through Phased Improvements

One of the smartest things you can do is look at your home as a multi-year project. Since the $3,200 aggregate limit (which includes the $2,000 heat pump cap) is an annual limit, you don't have to do everything at once.

For example, in Year 1, you might invest in a home energy audit (which qualifies for a $150 credit) and upgrade your attic insulation and air sealing (up to a $1,200 credit). In Year 2, you could move forward with a full Heat Pump Installation & Replacement in Silverdale WA to claim that $2,000 credit. If your home’s electrical panel isn't quite ready for the new load, upgrading that panel to support the heat pump can also qualify for a credit of up to $600. By spreading these out, you ensure you aren't "wasting" any of that 30% credit by hitting the annual ceiling too early.

Deep Dive into the Residential Clean Energy Credit (25D)

Now, let's talk about the "big kahuna" of energy credits: Section 25D, the Residential Clean Energy Credit. This is the credit you use for geothermal heat pumps. Unlike the air-source credit, this one is uncapped.

That’s right—there is no $2,000 or $3,200 limit here. You get a straight 30% credit on the entire cost of the geothermal system. Because geothermal installations involve significant ground work and specialized equipment, the total project cost is usually higher than air-source systems, making this 30% uncapped credit incredibly valuable. We’ve helped many neighbors with Geothermal Installation & Repair Service on Bainbridge Island WA take advantage of this to slash their long-term utility bills.

Geothermal Eligibility and Expenses

To qualify for the 25D credit, the geothermal heat pump must be ENERGY STAR certified. These systems work by using the constant temperature of the ground or groundwater as a thermal energy source.

The beauty of the 25D credit is what it covers. You can include:

• The heat pump unit itself.
• All labor costs for on-site preparation, assembly, and original installation.
• The "ground loop" (the piping buried in your yard).
• Necessary wiring and even the ductwork modifications required to make the system functional.

Whether we are performing a Geothermal Installation & Repair Service in Gig Harbor WA or a smaller repair, we always ensure the documentation reflects these eligible expenses so you can claim every penny you're owed.

Carryforward Provisions for Clean Energy

One major difference between the air-source credit (25C) and the geothermal credit (25D) is the carryforward provision. As I mentioned earlier, these credits are nonrefundable, meaning they can't give you back more than you owe in taxes for the year.

However, with geothermal (25D), if your 30% credit is larger than your tax bill for the year of installation, you don't lose the extra! You can "carry forward" the unused portion to the next tax year. This makes geothermal a fantastic long-term financial move for homeowners in places like Port Orchard. If you're interested in exploring this, check out our Geothermal Installation & Repair Service in Port Orchard WA.

Eligibility and Requirements for Federal Tax Credits for Heat Pump and Geothermal Upgrades

Who exactly can claim these federal tax credits for heat pump and geothermal upgrades? The rules vary slightly depending on which credit you are using.

For the Energy Efficient Home Improvement Credit (25C):

• Must be your principal residence (where you live most of the time).
• Must be an existing home that you are improving (new construction does not qualify).
• The home must be located in the United States.

For the Residential Clean Energy Credit (25D):

• Can be a principal residence OR a second home (as long as you don't rent it out to others).
• Can be an existing home OR new construction. This is a huge win for folks building their dream home in Sequim or Port Townsend!

If you are dealing with an older system that isn't quite ready for a full replacement, we also provide Heat Pump Repair in Poulsbo WA to keep you comfortable while you plan your tax-advantaged upgrade.

Homeowner vs. Renter Qualifications

Can you claim these credits if you don't own the home? Surprisingly, yes—in certain cases. If you are a tenant and you pay for the installation of a qualifying heat pump in your primary residence, you can claim the credit. However, the most common scenario involves the homeowner.

One strict rule: Landlords cannot claim these credits for property they rent out but do not live in. The credits are designed to help residents lower their own energy costs. If you use part of your home for business (like a home office), the credit might be prorated based on how much of the home is used for residential purposes. To ensure your system stays within the efficiency requirements for your tax claim, don't skip your Heat Pump Service & Maintenance in Silverdale WA.

2026 Documentation and Compliance

Since we are now in April 2026, we are looking back at 2025 installations. There was a big change that started in 2025: the PIN/QMID requirement.

To claim the credit for a heat pump installed in 2025 or later, you must provide the Qualified Manufacturer Identification Number (QMID) or a specific Product Identification Number (PIN) on your tax return. This ensures the IRS that the equipment actually meets the efficiency standards. When we finish an installation, we provide you with all the manufacturer certification statements and codes you need. If you're currently having trouble with an existing unit, we can help with Heat Pump Repair in Bremerton WA and give you a clear picture of what a modern, tax-credit-eligible replacement would look like.

How to Claim Your Credits and Combine Incentives

Claiming your federal tax credits for heat pump and geothermal upgrades is done through IRS Form 5695, "Residential Energy Credits." You'll fill this out and attach it to your standard 1040 federal tax return.

But wait—there's more! These federal credits can often be "stacked" with other incentives. This includes:

1. Utility Rebates: Many local PUDs in Kitsap and Clallam counties offer instant rebates.
2. State Incentives: Washington state often has additional programs for electrification.
3. HEEHRA Rebates: These are point-of-sale discounts for low-to-moderate income households (up to $8,000 for a heat pump), though they may reduce the "qualified expense" amount you use to calculate your federal tax credit.

If you're in Port Orchard and looking to upgrade, our team can help you navigate these options during your Heat Pump Installation & Replacement in Port Orchard WA.

Step-by-Step Filing Process

When tax season rolls around, here is how you should handle your 2025 installation records:

1. Gather Receipts: Keep all invoices for equipment and labor.
2. Identify the QMID: Locate the four-digit Qualified Manufacturer code on your invoice or the manufacturer's website.
3. Complete Form 5695: Part I is for the 25D (Geothermal) credit, and Part II is for the 25C (Air-Source) credit.
4. Calculate Subsidies: If you received a utility rebate that was a "purchase-price adjustment," subtract that from your total cost before calculating your 30%.
5. File with your 1040: Submit everything together.

Don't forget that keeping your system maintained is part of protecting that investment. We offer comprehensive Heat Pump Service & Maintenance in Port Orchard WA to keep your "tax-credited" system running for years to come.

Frequently Asked Questions about Federal Energy Credits

Can I claim the credit for a heat pump in a rental property?

Generally, no. These credits are for "taxpayer residences." If you are a landlord and do not live in the property, you cannot claim the 25C or 25D credits. However, if it is a multi-unit building and you live in one of the units, you may be able to claim a prorated portion of the credit.

What is the difference between the $2,000 and $3,200 limits?

The $2,000 limit is a "sub-cap" specifically for heat pumps and heat pump water heaters. The $3,200 limit is the "total" you can claim in a single year across all Section 25C categories (like $2,000 for a heat pump + $600 for windows + $500 for doors + $150 for an audit).

Do geothermal heat pumps have a maximum dollar limit?

No. Under Section 25D, geothermal heat pumps are eligible for a full 30% credit of the total installation cost with no upper dollar limit. This makes it one of the most powerful incentives available for home energy upgrades.

Conclusion

Upgrading your home’s HVAC system is a big decision, but the current federal tax credits for heat pump and geothermal upgrades make it the best time in history to go green. Whether you choose the versatile air-source heat pump or the incredibly efficient geothermal route, the savings are waiting for you.

At West Sound Comfort, we’ve spent over 30 years helping our neighbors in Bremerton, Bainbridge Island, Gig Harbor, and across the Olympic Peninsula stay comfortable. We don't just install equipment; we provide peace of mind with our 5-year warranty on parts and labor. We’re proud of our 95% customer retention rate—it’s a testament to the trust we’ve built in this community.

Ready to "Heat Pump It Up" and start saving? Whether you need a simple repair or a full system replacement, we are here to help. Explore our Heat Pump services today and let's get your home ready for a more efficient future.