Selling a house with a broken air conditioner is legal in every state, but you have to tell the buyer about it in writing. From there, your choices are practical rather than legal: fix the unit, replace it, offer a closing credit, drop the price, or disclose the defect and sell the home as-is. What you cannot do is stay quiet and hope the buyer misses it.
Disclosure Is Not Optional
Nearly every state requires sellers to complete a property disclosure form listing known problems with the home. A non-working air conditioner is a material defect, meaning it could reasonably affect the home’s value or a buyer’s decision to purchase. Put it on the form. The buyer signs off acknowledging they’ve seen it, and everyone moves forward with the same information.
Concealment is where sellers get sued. A buyer who discovers an undisclosed broken AC after closing can pursue the cost of repairs, and courts have treated deliberate concealment of known defects as fraud. Failure to disclose is the single most common legal claim filed against sellers and their agents. Writing down a $5,000 problem is always cheaper than defending a lawsuit over it.
As-Is Sales Still Require Disclosure
An “as-is” clause tells the buyer you won’t make repairs before closing. It does not tell them the AC is broken, and it doesn’t let you skip saying so. Courts have consistently held that as-is language shifts the risk of unknown defects to the buyer. It does not shield a seller from a misrepresentation claim over a defect the seller knew about.
The right sequence is disclose first, then let the as-is language do its actual job of limiting your obligation to fix things.
How a Broken AC Affects the Buyer’s Loan
A broken air conditioner can narrow the pool of buyers who can actually close on your home. Government-backed mortgages carry minimum property requirements, and a non-functional AC system draws scrutiny under all three major loan types.
FHA Loans
FHA guidelines don’t require a home to have central air at all. But if a system is installed, it must work. HUD 4000.1, the FHA handbook, requires that appliances contributing to market value be operational. When the system isn’t working, the appraiser must note the deferred maintenance, assess how it affects marketability, and estimate the repair cost. In practice, the lender often requires the fix before the loan closes.
VA Loans
The VA takes the same approach. There is no minimum property requirement for air conditioning regardless of climate, but if a system is installed, it must be operational or the appraisal must be made subject to repairs. VA appraisers will flag obviously damaged systems and may recommend repair before loan approval.
Conventional Loans
Fannie Mae rates property condition on a scale from C1 (new) to C6 (severe damage). Homes rated C6 are ineligible for conventional financing, and any deficiency affecting safety, soundness, or structural integrity has to be repaired to at least a C5 rating before the loan can be sold to Fannie Mae. A broken AC alone is unlikely to push a home to C6, but stacked with other deferred maintenance it can contribute to a downgrade that limits the buyer’s options.1Fannie Mae. Property Condition and Quality of Construction of the Improvements
The practical result: cash buyers and conventional-loan buyers looking at otherwise well-kept homes have the fewest hurdles. FHA and VA buyers may need the system repaired before their lender will finalize the deal, so either you fix it or the sale falls through.
Your Options and What They Cost
Once disclosure is handled, the rest is a financial decision. Each path has a different price tag and a different effect on how the sale proceeds.
Repair the Existing Unit
If the problem is a single component rather than a system at the end of its life, repair is usually the cheapest route. Major AC repairs such as a compressor or coil replacement typically run between $600 and $3,000, depending on the part and local labor rates. A working AC removes the biggest buyer objection, clears financing complications, and often pays for itself through a smoother sale. A professional HVAC inspection first, usually $150 to $300, will tell you whether repair is worth doing.
Replace the Entire System
Full central air conditioner replacement, unit and installation together, generally runs between $3,000 and $7,500 for most homes in 2026. Replacement makes sense when the existing system is old enough that a repair just delays the next failure. One thing to note: the federal Energy Efficient Home Improvement Credit that offered up to $1,200 for a qualifying central AC (or $2,000 for a heat pump) expired at the end of 2025, so neither you nor the buyer can claim it on a 2026 installation unless Congress extends it.2Internal Revenue Service. Energy Efficient Home Improvement Credit
Offer a Closing Credit
A closing credit is a dollar amount deducted from what the buyer owes at closing, earmarked for the AC. You get quotes from HVAC contractors, agree on a credit amount with the buyer, and let them handle installation after taking ownership. It keeps you out of the repair process and gives the buyer flexibility to pick their own equipment and contractor. Most buyers prefer a credit to a price cut because it’s a concrete line item tied to a specific problem.
Lower the Asking Price
Reducing your list price by the estimated replacement cost signals that you’ve already accounted for the broken AC. This works best in competitive markets where a lower entry price pulls in more interest. The risk: buyers may still try to negotiate again after the inspection, effectively double-dipping on the same defect. Price cuts also stick. Once the listing goes out at a lower number, raising it later sends a bad signal.
Disclose and Do Nothing Else
In a true as-is sale where the price already reflects the home’s overall condition, you can disclose the broken AC and let buyers factor it into their offers. This is common with investor-targeted properties or homes with multiple deferred issues where singling out one repair doesn’t make strategic sense.
Whatever route you pick, expect the buyer’s inspector to document the problem in the report. Industry data suggests a non-working HVAC system can reduce an appraised value by $5,000 to $10,000 or more, depending on the local market and the condition of the rest of the home. That reduction happens whether or not you disclosed the issue. Disclosure is what keeps you out of court.
When You List Matters
Season plays a bigger role than most sellers realize. Listing during peak summer, when buyers are touring in 95-degree heat, makes a broken AC impossible to ignore. Every showing becomes a physical reminder of the problem. Buyers touring in cooler weather feel the defect less, and it carries less emotional weight in the negotiation that follows.
If your timeline is flexible and you’ve decided not to repair the unit, listing in fall, winter, or early spring can soften buyer perception and reduce the chance of aggressive renegotiation after the inspection. In warm-climate markets where air conditioning is treated as essential year-round, the seasonal advantage shrinks.
Why a Home Warranty Won’t Cover It
Some sellers offer to buy a home warranty for the buyer as a goodwill gesture. Standard home warranties run roughly $40 to $75 per month. The idea sounds reasonable: give the buyer coverage on the AC so they feel protected.
The problem is that home warranties exclude pre-existing conditions, and most define that term broadly enough to cover anything detectable by visual inspection or a basic mechanical test, regardless of whether the homeowner knew about it. A broken AC you’ve disclosed on the seller’s form is the textbook pre-existing condition. The warranty company will deny the claim. A warranty can still be a nice add-on, but it isn’t a substitute for a credit, a repair, or a price adjustment on the AC itself.