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Plumber installed an upgraded water heater under warranty, then the serial numbers didn't match

"Seems cheaper [for them] to accept the error."

Tools on top of a water heater.

Photo Credit: iStock

A homeowner expected a broken water heater to be replaced under warranty, but after a plumber installed an upgraded unit, a routine repair turned into a dispute.

Here's what to know

In Reddit's r/HomeMaintenance, the homeowner explained that they hired a plumber to install a replacement heater, and they had paid for the service. Afterward, the supplier said the higher-end model they received was not tied to the warranty claim.

"The supplier is saying the serial numbers don't match for the warranty. Do I tell them to kick rocks? It's clearly the supplier's mistake for giving the wrong model to my plumber," they asked.

Most commenters agreed that the homeowner shouldn't be responsible for the mistake.

"This might be a case of better handled in writing. You did nothing wrong. Don't call and get chatty and over-explain," one person advised. "Seems cheaper [for them] to accept the error." 

Another added, "Yeah labor is almost always the biggest expense with a water heater."

More background

Removing the heater just to fix a paperwork problem would contribute to wasted labor and possibly material waste without doing anything to improve the homeowner's position.

Correcting the warranty records so they match the unit that was actually installed would eliminate the extra cost and hassle for everyone involved.

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"Take a picture of the tank and the nameplate and send it to them," one commenter recommended. 

What can be done?

Keeping invoices, taking photos of the installed unit, and documenting its model and serial number can ensure you have the right documentation if you find yourself in a similar situation. 

As one commenter wrote, "They can't steal what is now your water heater without your permission and nobody wants to install a new water heater twice."

Ultimately, keeping an upgraded unit could also pay larger dividends down the line — making a new heater feel less like a burden and more like an investment. 

Cala makes customizable smart heat pump water heaters that help homeowners lower their energy bills by heating water exactly when it's needed. 

Cala's system is designed to give homeowners more control over when and how their water is heated. For homeowners comparing future options, Cala is worth keeping in mind. 

Where can I learn more?

From warranty disputes to questionable plumber work, these stories discuss similar water-heater headaches as you weigh whether an upgrade is worth it.

• One homeowner was paid $1,400 for a warranty swap and still felt ripped off.

• A GE owner saw a heat pump unit fail quickly as warranty delays dragged on.

• A tenant posted a video after a botched water heater fix raised gas-leak fears.

• A homeowner grew wary when a plumber pushed an appliance upgrade that felt questionable.

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