The Volunteer Repair That Came Back as a Claim

Why this matters

A shop donates a water heater to a widow through her church, two techs install it on a Saturday, and everyone feels good. Eight months later a letter arrives from her homeowner's insurance company saying it paid for water damage to her finished basement and intends to recover that money from the shop. Nobody at the shop remembers the job clearly, and the job file holds almost nothing. This case is told backwards, from that letter, because that is how the shop experienced it, and because the gaps in the record turned out to be most of the story. It is a composite drawn from common patterns, with details changed. This is not legal advice.

The letter, and the file the shop pulled

The letter came from the insurer's subrogation unit. Subrogation is the insurer stepping into its policyholder's shoes: having paid her claim, it pursues whoever it believes caused the loss. The letter said the loss followed a discharge from the water heater's temperature and pressure relief valve, that the heater had been installed by the shop, and that the installation was negligent. It asked the shop to notify its liability carrier.

The office manager searched the shop's software for the address and found nothing, because the job had never been entered. What existed was scattered:

WHAT THE SHOP COULD FIND, DAY 1
- church volunteer's email, Feb: "can you help
  Mrs. H, her heater died, we'll cover the unit"
- supply house receipt, Mar 9: 40-gal gas heater,
  flex gas connector, 2 water connectors, dielectric
  unions. NO expansion tank on the receipt.
- tech's phone: 3 photos, Mar 9. new heater in
  place, old pan under it, vent connector.
- timesheets Mar 9: blank (Saturday, unpaid)
- permit: none pulled
- scope or signed anything: none
- photos of discharge pipe end: none

Every gap on that list mattered later. Read top to bottom, the file says the shop agreed to an email, bought a heater, installed it on unpaid time without a permit, and kept three pictures.

What the shop's own file could and could not show

It could show what was bought. The receipt is the most solid document in the file. It shows no thermal expansion tank. That does not prove there should have been one, but it proves there was not one from this purchase.

It could show part of the install. The three photos show the heater, the vent connector, and the old drain pan reused under the new heater. None shows where the relief valve discharge pipe ended, or the supply piping above the heater where a pressure-reducing valve or check valve would be.

It could not show scope. With no written scope, the shop had no record of what it agreed to do or not do. One tech remembered telling the church volunteer that the pan's drain line was cut off years ago and should be fixed. Nobody wrote it down, and the volunteer did not remember it.

It could not show the techs were working for the shop. The timesheets were blank because the Saturday was treated as volunteer time. That made the shop's liability carrier ask whether this was the shop's operation at all, and it left an open question about the techs' own pay (see related: Volunteering the Crew and the Pay Rule).

It could not show an inspection. No permit, so no inspector ever looked at it.

Reconstructing the install

With the carrier's adjuster, the shop arranged to inspect the basement and the heater, which the homeowner had kept. Before the shop's tech touched the heater on that visit, he closed the gas supply valve to the heater and confirmed the burner was off, closed the cold water supply, opened a hot tap upstairs to relieve pressure, and let the tank sit until the water at the drain valve ran no hotter than warm, since a tank that has cycled recently can hold water hot enough to scald and the relief valve was the component under suspicion. The adjuster's photographer documented each step.

What they found, in the order they found it:

1. A pressure-reducing valve on the incoming water line, upstream of the heater, installed years earlier by someone else. Many pressure-reducing valves prevent water from flowing back into the street main, which makes the house's piping a closed system: when water heats, it expands, and with nowhere to go, the pressure in the house climbs.
2. No thermal expansion tank. The old heater had been installed before the pressure-reducing valve, so nobody had ever needed one. The new heater went into a different system than the one the old heater had been installed into.
3. The relief valve discharge pipe ran down the side of the heater and ended about six inches above the old pan.
4. The pan's drain fitting led to a stub of pipe cut off flush with the pan. The pan drained nowhere.
5. Mineral scale and debris on the relief valve's seat. A relief valve that opens repeatedly can lift debris and seat badly.

The homeowner, interviewed with her daughter, said the heater had "dripped a little" from late spring. In October she went away for a long weekend. When she came back, the pan had overflowed and water had spread across the finished side of the basement.

What the pieces add up to

The most likely sequence, which the adjuster and the shop's own tech agreed on, is this. Every heating cycle in a closed system raised house pressure until the relief valve lifted and let a little water go; that was the summer dripping. The relief valve is a safety device meant to open in an emergency, not to manage normal expansion, and repeated lifting is a known way for one to start leaking. Over a weekend with the heater cycling, the valve stuck partly open, the discharge ran into a pan with no drain, and the pan overflowed onto the floor.

Two things in the installation would most likely have prevented the loss: thermal expansion control on a closed system, and a relief valve discharge that ended somewhere water could go. Both are addressed in the plumbing codes. In the International Plumbing Code as adopted by many jurisdictions, section 607.3 addresses thermal expansion control where a backflow preventer, check valve or pressure-reducing valve creates a closed system, and section 504.6 sets the requirements for relief valve discharge piping, including where it may terminate. Jurisdictions on the Uniform Plumbing Code have their own sections covering the same subjects, and local amendments vary, so the shop's attorney pulled the local code as adopted at the time of the install rather than relying on the model text.

The finding nobody wanted: the techs knew both of these things. They install expansion tanks on closed systems every week on paid jobs. On a donated Saturday, with a unit the church had bought and a receipt that did not include a tank, nobody looked up from the heater to the pressure-reducing valve on the line above it. The pan was noticed, mentioned and not fixed.

What the missing permit did and did not change

It is tempting to say a permit would have prevented the loss. The honest answer is that it would very likely have helped and it is not certain. An inspection on a water heater replacement commonly looks at venting, gas connection, the relief valve and its discharge, and, in jurisdictions that enforce it, thermal expansion control. An inspector who saw a discharge pipe ending above a pan with no drain would likely have written it up.

What the missing permit certainly changed was the defense. The first question the shop's liability carrier asked was whether the work was permitted and inspected. With a passed inspection, the shop would have had an independent official's record that the installation met the adopted code on the day it was done. Without it, the shop had three photos and two techs' memories. The carrier settled the claim. The shop paid its deductible, its premium rose at renewal, and the owner spent the equivalent of several working days over four months on letters, the site inspection and calls with the attorney.

The question about whether the work was the shop's operation was resolved in the shop's favor, because the receipt, the email and the techs' account all showed the shop organizing the job. The carrier still noted, in writing, that an unrecorded job on unpaid time had made that harder to establish than it should have been.

What the shop requires now

The shop adopted a written procedure for every donated or discounted job, which is now its standing rule (see related: The Donated Work Intake SOP). Mapped against this case, the procedure would have produced a job number before the visit, a site assessment that photographs the supply piping and every connection, a signed scope naming the pan drain as either included or excluded, a permit or a cited exemption, a written reply from the insurance agent, paid time on the timesheet, and an inspection record. Each of those is one of the gaps on the Day 1 list above.

The owner also made one change that is not in the procedure, aimed at the specific failure: on every water heater replacement, donated or paid, the tech photographs the incoming supply from the meter or the main to the heater and the termination of the relief valve discharge, and the job cannot be closed without those two photos. The point is to make the tech look up from the heater at the system it is going into.

What would have changed the outcome

If the shop had replaced a heater that sat on an open system, with no pressure-reducing valve or check valve on the line, the relief valve would probably not have cycled and the loss would probably not have happened, despite the same paperwork gaps. The paperwork would still have been just as indefensible had anything else gone wrong.

If the recipient had rented rather than owned, the landlord's consent would have been the first missing document, and the claim might have come from the landlord's insurer instead of hers.

And if the failure had been in the gas connection or the venting rather than the water side, the claim could have involved carbon monoxide or fire rather than a wet basement. The same gaps in the file would have been sitting under a much worse event.

References

• International Plumbing Code, section 607.3 (thermal expansion control) and section 504.6 (relief valve discharge), as adopted by your jurisdiction; Uniform Plumbing Code equivalents where adopted
• Your liability insurance agent and policy, on coverage for donated work and notice of claims
• See related: The Donated Work Intake SOP
• See related: How to Donate Work Without Creating Liability
• See related: Volunteering the Crew and the Pay Rule