The Condenser That Floated Away

Why this matters

When a storm moves a piece of equipment you installed, the first question anybody asks is not what the storm did. It is what you did, three years ago, on a job nobody at the shop remembers. The only witness is the ticket. This case is told backwards from that ticket, because the reconstruction is where the shop learned what its records could and could not prove, and what a correct install in a mapped flood zone would have looked like.

The call, and the ticket that came with it

Four days after a coastal storm, the owner of a single-story house on a slab called the shop. The condenser the shop had installed was gone from beside the house. It was found against a fence two lots down, about 60 ft away, on its side, the line set torn off at the service valves and the electrical whip ripped out of the disconnect. The homeowner's flood claim adjuster had already photographed it and asked a question the homeowner passed along: was it installed at the required elevation, and was it anchored?

The service manager pulled the original job. This is everything it held:

JOB 14-0877   CONDENSER REPLACEMENT   closed 06/11
tech: RD     helper: --
scope: replace failed condenser, same location
       new composite pad, reuse line set, new whip
pad: 36x36 composite, set on leveled gravel
start: amps 11.2 / RLA 14.1   subcool 9F
photos: 2 (unit nameplate, finished install)
permit: --
notes: customer approved, swept up, old unit
       hauled

Read it the way an adjuster or an attorney would. It proves the unit was replaced, on what date, by whom, that it ran within its rated current and was charged sensibly. It proves nothing about where the unit sat relative to the flood elevation, because no elevation was ever recorded. It says nothing about anchoring, because there was none to record. The permit line is blank.

What the record could prove, and what each gap meant

The service manager worked the record against the questions in order, and each gap turned into a finding.

The location was not a choice anybody made. "Same location" meant the new unit went where the failed one had been, on grade beside the slab. The ticket shows no check of the parcel's flood zone. A later lookup put the house in Zone AE with a base flood elevation (BFE, the elevation the one-percent-annual-chance flood is expected to reach) of 8.0 ft. The homeowner's elevation certificate, which had been in a kitchen drawer the whole time, gave the lowest adjacent grade at 5.5 ft. A pad on leveled gravel sits a few inches proud of grade, so the top of the pad was about 5.8 ft: 8.0 minus 5.8 is 2.2 ft below the BFE, before any freeboard the community adds.

The finished-install photo was the best evidence the shop had, and it hurt. One photograph, taken from the side, showed the unit on its pad with clear ground around the base. No anchor clips, no brackets, no straps to the pad, no fasteners into anything. Composite pads are light and buoyant. A unit resting on one, held only by gravity, rides the pad up once water rises around it, and from then on the only thing tethering it is the copper line set and the whip, neither of which is meant to carry a load.

The high-water mark closed the question of whether elevation would have mattered. A surveyor working for the neighbor's claim put the high-water mark at 9.1 ft. 9.1 minus 5.8 is 3.3 ft of water over the pad. Had the unit sat at BFE plus the community's 1 ft of freeboard, at 9.0 ft, the water would have reached 0.1 ft, a little over an inch, above its base. Wet, probably damaged, but on its platform and still connected. That is the honest version: the correct install would not have made the unit flood-proof in this storm, because this storm exceeded the design flood. It would have kept the unit from leaving.

The blank permit line was the largest gap, and the hardest to read. In this jurisdiction a condenser replacement needs a mechanical permit. No permit means no inspector ever looked at the elevation, and it also means the shop cannot point to an approval. In some jurisdictions a like-for-like replacement is exempt from the flood elevation rule as long as it is not part of a substantial improvement; in others, including this one, a replacement in a flood hazard area has to meet the current elevation requirement. The ticket did not say which rule the tech had assumed, because the tech had assumed nothing.

What the record could not tell anyone: whether the customer was told. There was no note that the elevation had been discussed, offered, priced or declined. A declined option, signed, is a very different record from silence.

The claim, and where the shop's part stopped

The adjuster's question was about the homeowner's coverage, not about the shop. The homeowner then asked the shop, reasonably, why the unit had not been installed the way the adjuster said it should have been. The owner did three things, in this order, and the order mattered.

First, the owner called the shop's insurance agent and reported a potential claim before saying anything about fault to anybody. Most liability policies require prompt notice, and a statement made on a driveway can become a problem the agent cannot fix later. Second, the owner gave the homeowner the full job record, unedited, because withholding it would have been worse than anything in it. Third, the owner offered to quote the replacement correctly, as a separate job, and did not discuss who should pay for it. Whether the shop owed anything for the first install was a question for the shop's carrier and, if it went that far, its attorney; it was not something to settle at the fence. This is not legal advice, and a reader in the same position should start with their own agent.

What the original install should have been

Working backwards from the storm, the service manager wrote down what a correct replacement would have carried. None of it is exotic, and most of it is the subject of a sibling card.

• A hazard check at intake. The zone, the BFE and the community's freeboard looked up before the estimate, so the price included the platform. See related: The Hazard Zone Check at Intake SOP.
• Equipment at the required elevation. IRC R322.1.6, in the 2018 and 2021 editions as adopted by your jurisdiction, puts mechanical equipment in a flood hazard area at or above the elevation required for the lowest floor, which in most A zones under R322.2.1 is BFE plus 1 ft or the design flood elevation, whichever is higher. Here that meant a platform carrying the unit's base at 9.0 ft, 3.2 ft above the old pad top (9.0 minus 5.8). See related: How to Elevate or Relocate Mechanical Equipment Above Flood Level.
• The unit fastened to its platform, and the platform to the structure or footings, by a method the manufacturer or an engineer specifies for the loads, so the cabinet cannot ride or slide. A pad that only rests on gravel is not a foundation for anything that has to stay put. See related: How to Anchor an Outdoor Unit for Wind.
• The disconnect and the whip raised with the unit, because an elevated condenser fed from a disconnect at grade still loses its electrical in the first foot of water.
• A permit, so the elevation was inspected and the shop held a record that it had been.
• The record itself: zone, BFE, elevation of the platform as measured, photos showing the fasteners, and the permit number. If the customer had declined the platform, the decline in writing, with the reason.

The service manager timed the reconstruction honestly too. The platform, anchoring and raised disconnect add roughly half again to the labor of a same-location swap, and they lengthen the job by a second day when the platform is built on site. That is real money for the customer, which is exactly why it has to be offered with a reason rather than left out.

The cut that settled it

The single most useful thing in the reconstruction was the arithmetic on the high-water mark. Without it, the shop and the homeowner would have argued about a hypothetical: would the unit have survived if it had been elevated? With 9.1 ft measured and 9.0 ft required, the answer was concrete. The correct install would have taken about an inch of water and stayed on its platform; the actual install took 3.3 ft and left. It turned a fight about blame into a factual statement both sides could accept, which is also what the shop's carrier wanted to see.

The number that misled at first was the start-up record. Current at 11.2 against a rated 14.1, subcool at 9 F: the ticket looked like a careful job, and everything on it was right. It was careful about the things the shop habitually measured and silent on the one thing the location demanded.

What the shop changed

• The intake check became a standing step for every outdoor equipment replacement, with the hazard block printed on the work order.
• "Same location" stopped being a scope phrase. The estimate now states where the unit will sit and at what height, measured.
• Every outdoor install photographs the fasteners, not just the finished unit, and records the pad elevation where the parcel is mapped.
• A customer who declines elevation or anchoring signs a line saying so, with the hazard named.

None of these would have changed the storm. All of them change what the next ticket can prove.

References

• International Residential Code R322.1.6 and R322.2.1 (flood-resistant construction), 2018 and 2021 editions, as adopted by your jurisdiction.
• FEMA P-348, Protecting Building Utility Systems From Flood Damage.
• 44 CFR 60.3, National Flood Insurance Program floodplain management criteria.
• See related: Flood Zones, Base Flood Elevation and Equipment; How Service Work Quietly Removes a House's Hazard Resistance; The Hazard Zone Check at Intake SOP; How to Elevate or Relocate Mechanical Equipment Above Flood Level.