A homeowner expected a written assurance about a 10-year AC warranty to cover a failed repair.
Instead, when the upstairs system stopped working, the visit ended with a very different answer: no warranty coverage and a $10,000 estimate for a new compressor.
Here's what to know
In a Reddit post, the homeowner said they bought the house in 2019 and that the second-floor AC failed in 2026.
Before booking the appointment, a company representative allegedly confirmed in writing that parts were covered under a 10-year warranty and that only labor would be out of pocket.
According to the homeowner, that changed once the technician arrived.
"Which makes zero sense, since the only reason we brought them on board in the first place was because the rep told us we had that 10-year warranty," the original poster wrote.
In the comment thread, several people said registration was probably the sticking point. They noted that many HVAC systems come with a five-year parts warranty by default, with 10 years available only if the equipment is registered shortly after installation.
The original poster later replied, "I checked the warranty and showed it was valid until 2024. It is not looking good."
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The repair estimate itself also drew skepticism. One commenter wrote, "Even if it is out of warranty, a compressor change out shouldn't be 10k."
More background
Registration deadlines on HVAC warranties can be easy to miss, particularly in newly built homes or when a buyer moves in after the equipment is already installed.
In this case, the homeowner later said the system was installed in January 2019 and that they purchased the house in September 2019, apparently after the 60-day window had already expired.
"A lot of manufacturers have 5yr without registration. 10 years with. The installation company is SUPPOSED to register it for you," one commenter wrote.
If you are weighing those options, upgrading your heating and cooling system is one of the best ways to save money on your utility bills and protect yourself against rising energy prices. Palmetto's Comfort Plan network can help you find efficient heating and cooling solutions for your home and connect you with vetted installers.
What can be done?
If you end up in a similar situation, it can help to gather the model and serial number, the original invoice, and any written warranty confirmations first. Contacting the builder and the manufacturer directly may also be worth trying.
The original poster said that was the next move: "I'll get in touch with the manufacturer and the builder as well. At this point, I think that's my best option."
You should also get multiple quotes before agreeing to a major repair. Commenters urged the homeowner to check with smaller independent contractors, especially because the $10,000 compressor swap drew skepticism in the thread.
If replacement makes more sense than repair, Palmetto is another option to explore. If you're not ready to spend up front, the Comfort Plan includes $0-down options that can lower your heating and cooling costs by up to 50%, and it includes 12 years of free maintenance.
You can also pair solar panels with electric appliances such as efficient HVACs to drive your utility costs even lower. EnergySage makes it easy to find the best solar system and installer for your home and budget, saving you up to $10,000 on installations.
Where can I learn more?
Maintenance slip-ups and simple cooling tweaks can shape repair bills, summer energy costs, and the decisions homeowners face when an AC starts acting up.
• A homeowner found cottonwood seeds clogging coils, a hidden mistake behind costly AC strain.
• Another homeowner showed how cleaning AC unit drains can restore efficiency and avoid service calls.
• One family tested a thermostat setting hack and watched summer cooling bills drop sharply.
If you're dealing with a shaky warranty claim or a repair quote that feels too high, a few maintenance fixes and better thermostat habits may help keep costs down while you figure out what to do next.
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