If you’re pricing a new air conditioner right now, take the federal tax credit out of your math. The Energy Efficient Home Improvement Credit, the one almost everybody means when they say “the A/C tax credit,” covered improvements made through the end of 2025. A system installed this year doesn’t earn it, no matter how efficient the equipment is.
That’s worth catching early, because the credit was large enough to change what people bought. It ran to 30% of qualifying costs, and it was often the reason a homeowner stretched to the higher-efficiency tier. Budget around money that isn’t coming and you’ll either short the project or discover the gap on installation day, when your options are worse.
Is There Still a Federal Tax Credit for a New Air Conditioner?
Not for a system installed in 2026. The IRS states the credit applies to qualified improvements made through December 31, 2025. The equipment has to have been placed in service, meaning fully installed and operating, on or before that date. Buying in one year and installing in the next doesn’t preserve it.
The agency’s own page on the Energy Efficient Home Improvement Credit puts it plainly: “You can claim the credit for improvements made through December 31, 2025.” That’s the sentence to keep in mind when you read anything older, because a great deal of otherwise reasonable content on this subject was written while the credit was still running and has never been updated.
It’s easy to see why the belief persists. The credit was around for years, it was written about constantly, and a lot of the material explaining it is still sitting on page one of a search. Add sales scripts that were accurate when they were written and never revised, and you get a situation where a homeowner can hear about the credit from three different directions in the same week and none of them is deliberately misleading anyone.
One honest caveat before we go further. We install air conditioners; we don’t prepare tax returns. Everything below describes what the IRS publishes about the credit’s dates and caps. Whether any of it applies to your return is a question for whoever files it.
What Could You Have Claimed, and What Was It Worth?
The credit equaled 30% of certain qualified expenses, subject to annual caps. The IRS puts the general cap at $1,200 a year for energy efficient property costs and certain improvements, with a separate and higher $2,000 a year for qualified heat pumps, water heaters, biomass stoves and biomass boilers.
| Feature of the credit | What the IRS says | Why it mattered |
|---|---|---|
| Window | Improvements made through December 31, 2025 | A 2026 install earns nothing from it |
| Rate | 30% of certain qualified expenses | The offset scaled with the size of the job |
| Annual cap | $1,200 general, $2,000 for qualified heat pumps | Heat pump projects carried the larger ceiling |
| Refundability | Nonrefundable, no carryforward of excess | It could only reduce tax you actually owed |
| Property | An existing main home, not a new home | Rentals you don’t live in were outside it |
Two details in that table did more damage to expectations than anything else. Nonrefundable means the credit could only reduce tax you owed, so a household with little federal tax liability never saw the full number. And the main-home rule left out owners buying equipment for a property they don’t live in, which surprises people every year.
Do You Still Have a 2025 Installation Left to Claim?
Possibly. If qualifying equipment was placed in service on or before December 31, 2025, the credit belongs on the return that covers that year. Plenty of homeowners who replaced a system late last year have not filed yet, or filed without it because nobody told them to look.
There’s one requirement from the final year that trips people up. For property placed in service in 2025, the IRS says no credit is allowed unless the item was produced by a qualified manufacturer and the taxpayer reports the Qualified Manufacturer Identification Number for that item on the return. That number isn’t printed on your invoice by default. If you don’t have it, ask the installing company for the manufacturer and model, and ask the manufacturer for the identification number tied to it.
- Find the invoice and confirm the date the system was placed in service, not the date you signed.
- Pull the manufacturer, model and serial number off the equipment or the paperwork.
- Ask your installer for the manufacturer’s identification number for that item.
- Give all of it to whoever prepares your return and let them decide what’s claimable.
Watch the “placed in service” wording, because it’s the part people get wrong in both directions. A deposit paid in December 2025 against a January 2026 installation doesn’t qualify; the equipment has to have been installed and running. Equally, a system that went in during 2025 still counts even if you didn’t pay the balance until this year. The date that matters is the day the system started doing its job, and your invoice or permit paperwork is usually the cleanest record of it.
What Should You Do If a Quote Still Promises a Tax Credit?
Ask three questions before anything else. Which credit is it, by name. What date does the equipment have to be in service by. And will you put the answer in writing on the proposal. A company that can answer all three has done its homework. One that can’t just told you something it hasn’t checked.
Be careful about how the promise is worded, too. “May qualify for available incentives” is not the same as “you will receive a federal tax credit,” and the first version is doing a lot of quiet work. If an incentive is genuinely part of your decision, it belongs on the proposal as a line with a name and a date attached, not as a phrase in a sales conversation.
Treat the answer as information about the whole proposal, not just the incentive line. A company still quoting an expired federal credit in the second half of 2026 is telling you how closely it tracks the rules that govern its own trade. That’s the same attention to detail you’re relying on for sizing, permits and code work.
What’s Actually Left to Offset the Cost
Less than there was, and none of it federal for a 2026 replacement. What remains is worth checking anyway, because the pieces are real even though they’re smaller and much more local.
- Your electric utility’s rebate program. These are set by the utility, not by Washington, and they change without much notice. Go to your provider’s own site or call the number on your bill. Don’t rely on a contractor’s summary of a program, and don’t rely on an article written for a different utility’s territory.
- Manufacturer promotions. Real, but time-limited and tied to specific model families. Ask which model, which promotion, and what date it expires, in writing.
- The efficiency itself. A higher-efficiency system still lowers what you spend to run it, which is a slower and less exciting offset than a credit but does not expire. Our post on what a SEER2 number actually buys you covers where that math holds up and where it doesn’t.
- Right-sizing the job. The cheapest money on a replacement is usually the equipment tier you didn’t need, not the incentive you didn’t get.
We put the equipment, the labor, the permit and the electrical work on separate lines, because a homeowner who just lost an incentive needs to see exactly where the money goes before deciding what to change. A single bundled number gives you nothing to adjust.
It’s also worth resetting the comparison you’re running. With the credit gone, the gap between a mid-tier system and the top tier is now the full gap, paid by you. For some houses that premium still earns its keep. For plenty of others it was only ever justified by the offset, and the honest answer this year is to buy the tier the house actually needs and put the difference toward installation quality.
Frequently Asked Questions
Is there a tax credit for a new air conditioner in 2026?
Not under the Energy Efficient Home Improvement Credit. The IRS states that credit applies to improvements made through December 31, 2025, and equipment has to be placed in service by that date. Anything installed in 2026 falls outside it.
What air conditioners qualified for the tax credit?
Qualifying central air conditioners and heat pumps that met the efficiency requirements in force at the time, installed in an existing main home. Heat pumps sat under the higher $2,000 annual cap. Because the window has closed, model eligibility is now only relevant to a 2025 installation being claimed on a 2025 return.
How do I claim the credit for a system installed in 2025?
Through the return covering that tax year, with your preparer handling the form. Gather the invoice showing the in-service date, the manufacturer and model, and the manufacturer’s identification number for the item, which the IRS required for property placed in service in 2025.
Could a landlord claim the credit on a rental property?
Generally no. The IRS describes the credit as applying to improvements to your main home, the place you live most of the time, and says you can’t claim it if you’re a landlord or other property owner who doesn’t live in the home. That rule held for the whole window.
Should I have rushed my replacement to beat the deadline?
Only if the system was already failing. Replacing a healthy air conditioner years early to capture a percentage of the cost is usually a losing trade, because you throw away remaining service life to save a fraction of the purchase. The deadline is gone now either way, which at least removes that pressure from the decision.
Do utility rebates replace the federal credit?
They’re a different and usually smaller thing, and they vary by provider and by year. Check your own utility directly rather than assuming a program you read about elsewhere applies to your address. Some are paid to the contractor and appear as a discount; others are paid to you after the fact.
Price the Job on What It Actually Costs
A replacement priced honestly doesn’t need an incentive to make sense. It needs the right size for the house, the electrical and code work the job really requires, the permit, the disposal, and a number that doesn’t move after you sign. That’s how we plan and install a replacement system, and it’s the same process whether or not there’s a credit in the picture.
Honest Air has served Treasure Coast property owners for 25 years, a real person answers the phone around the clock, and you get the price before the work starts. If you’re weighing a replacement this year and want the real number without an expired incentive baked into it, book a service visit and we’ll put it in writing.