The Gray-Market Mini-Split With No Warranty

Why this case is worth reading

Most warranty stories turn on a wrong diagnosis or a sloppy claim. This one had neither. The tech found the right failure, documented it properly, and the office filed a clean claim with the right photos and readings. The claim was denied anyway, for a reason that was settled the day the customer clicked "buy", fourteen months before anyone opened the unit. Being right about the compressor was never going to be enough, and the useful part of the case is why, and what the shop changed so that the next customer hears the answer before the install instead of after the failure.

What gray-market equipment is, in general, is owned by a sibling; see related: Gray-Market Equipment and the Missing Warranty. This is one instance, followed through.

The install, and the paper it left

A homeowner bought a single-zone ductless mini-split from an online marketplace seller, at a price well under what the shop's distributor charged for the same model, and asked the shop to install it. The shop's customer-supplied equipment practice at the time was what many shops do: install for labor only, warrant the labor for 12 months, and have the customer sign an acknowledgment that the equipment warranty was between the customer and the manufacturer.

The install record held: the model number, the outdoor and indoor unit serials typed into the job, line set length, the nitrogen pressure test, the evacuation reading, the startup readings, and the signed acknowledgment. It did not hold a photo of either data plate, and nobody registered the unit. The acknowledgment said registration was the customer's responsibility, and she meant to get to it.

The failure, diagnosed right

Fourteen months after install, in August, the unit stopped cooling and the outdoor unit showed a compressor fault code. The tech's sequence:

• Isolation first. He opened and locked the outdoor disconnect, tagged it, and proved the unit dead at the line terminals on a tester checked against a known live source before and after, per NFPA 70E Article 120 (120.5 in the 2021 edition, renumbered in 2024), with work practices at 29 CFR 1910.333(b)(2).
• The inverter's stored energy second. An inverter-driven outdoor unit holds a high DC voltage on its board's capacitors after the power is off. He waited the discharge time on the board's warning label and measured the DC bus himself before touching anything on the board or the compressor leads. A dark indicator light is not a measurement.
• Then the compressor. Winding resistances read open on one leg against the service manual's values, and the winding-to-shell reading was in the range the manual calls a failed compressor. Fan motor, board outputs and sensors checked normal. The install record's evacuation reading and startup readings had been on spec, and the unit had run 14 months without a service call, which argued against a failure the install caused.

Every reading was photographed with the meter in frame. The diagnosis was correct and it was provable, which is the standard a claim needs.

The claim, filed right

The office called the manufacturer's warranty line with the outdoor serial. The compressor in this model carried a 5-year parts term in the published warranty, and 14 months is well inside 5 years. The office expected the only question to be the missing registration, which under the published terms would have shortened some coverage but did not void the base compressor term.

The denial came back two days later in writing, and it had nothing to do with registration or the diagnosis.

Why being right was not enough

The serial number told the manufacturer where the unit was built to go. It had been produced for distribution in another country and had reached the U.S. through a seller outside the manufacturer's authorized U.S. dealer network. The U.S. limited warranty covered units purchased from an authorized U.S. dealer and installed in the U.S.; this unit was outside it. The manufacturer's warranty for its intended market was not something a U.S. homeowner could claim.

Read the case against that fact and every earlier step lines up differently:

• The price was the first visible symptom. It was low because the seller was not carrying the cost of the authorized channel, which is also the cost of the warranty and support that channel provides. See related: The Price That Is Too Good.
• The registration would not have saved it. Registering a unit the warranty does not cover produces a registration record, not coverage.
• The diagnosis was never in question. Nothing the tech could have done better on the compressor changes a channel restriction decided at purchase.
• The data-plate photo the shop did not take would have helped in one way: a closer read of the plate before install might have shown markings or a model suffix for the other market, and that was the shop's one real chance to catch it.

The conversation

The office manager called the customer before sending the denial letter, because a letter alone reads like the shop washing its hands.

She said, in substance: "The diagnosis is solid and we have the readings. The manufacturer has denied the claim, and not for anything about the install or the repair. The serial number shows the unit was built for sale in another country and came through a seller they don't authorize here, and their U.S. warranty only covers units sold through their U.S. dealers. Our labor warranty was 12 months and this is month 14. We want to lay out your options and what each one costs in time, and tell you where you might still have recourse."

The customer's first question was whether the shop should have known. The honest answer: the shop could not have known from the box, but it could have asked the manufacturer before installing, and from now on it will. Saying that plainly kept the conversation about options instead of blame.

The options, as the shop laid them out:

• Replace the compressor at her cost. About 8 hours of labor plus the compressor, recovery and recharge, on a unit that would still carry no manufacturer warranty afterward.
• Replace the unit with one from the shop's distributor, with a full manufacturer warranty, registered by the shop at install. Higher up front, and the only option that ends with a warranty.
• Pursue the seller. Her recourse for a product sold outside its warranty channel runs first to whoever sold it to her: the marketplace seller, and possibly the marketplace's own buyer-protection program. The shop gave her the serial, the denial letter and the diagnostic photos to make that case.

She chose the new unit. The shop's unbilled time on the failed claim, counting the diagnostic visit's documentation, two warranty calls and the denial follow-up, came to about 3.5 hours.

The policy that followed

The shop rewrote its customer-supplied equipment policy around one rule: the warranty question gets answered before the install, not after a failure. Before the shop installs any customer-supplied unit with a manufacturer warranty:

1. The customer sends the model and serial, or a photo of the data plate, before the install is scheduled.
2. The office calls the manufacturer's warranty line or authorized U.S. distributor and asks one question: is this serial a U.S.-market unit eligible for the U.S. warranty? The answer, the date and the name of the person are logged.
3. The tech checks the plate on arrival for the U.S. listing mark of a nationally recognized testing laboratory and for a 60 Hz rating, and photographs both plates before the unit leaves its box.
4. If eligible, the shop registers it at install with the customer's permission and keeps the confirmation in the job record; see related: Warranty Registration and Proof of Installation.
5. If not eligible, the shop tells the customer in writing what that means, offers a quote on an equivalent unit from its distributor, and installs the customer's unit only if they sign an acknowledgment that names the warranty gap specifically, not in general terms.

Step 3 has a second reason beyond the warranty. A unit built for another market may carry a listing that does not apply here or a power rating for a different supply frequency, and NEC 110.3(B), as adopted by your jurisdiction, requires equipment to be installed according to its listing and labeling. An unlisted unit is an inspection problem whether or not it ever fails.

What the law does and does not settle

The federal Magnuson-Moss Warranty Act, with the FTC's rules under it at 16 CFR Parts 700 to 703, governs how written warranties on consumer products are disclosed and limits some conditions a warrantor may impose, and under it the warrantor writes the terms of a limited warranty, including where it applies. Whether a particular channel or territory restriction holds against a particular buyer depends on how it was disclosed and on state law, and the implied warranties that come with a sale, under each state's version of the Uniform Commercial Code, generally run against the seller rather than a manufacturer who never sold into that channel. Those are questions for the customer's own attorney or the state attorney general's consumer office, not for the shop. This is not legal advice. What the shop can do is hand the customer a clean record: the serial, the denial in writing, and the diagnosis with its photos.

References

• Magnuson-Moss Warranty Act, 15 U.S.C. 2301 and following, and the FTC's rules under it at 16 CFR Parts 700 to 703
• NFPA 70, National Electrical Code, 110.3(B), as adopted by your jurisdiction
• NFPA 70E Article 120 (120.5 in the 2021 edition, renumbered in 2024), and OSHA 29 CFR 1910.333(b)(2), for isolating the outdoor unit
• See related: Gray-Market Equipment and the Missing Warranty
• See related: Warranty Registration and Proof of Installation