The Equipment That Ran for Three Weeks — And Shouldn't Have

The Situation

A clean water pipe bursts in a finished basement. Category 1 water damage — the least severe classification. The contractor arrives, deploys six dehumidifiers and twelve air movers, and assures the homeowner the job will be done quickly. Three weeks later, the equipment is still running. The final invoice: $34,800. Insurance approved $18,200. The contractor says the homeowner owes the $16,600 difference.

The homeowner came to us feeling trapped. They didn't know enough about the industry to push back, but something felt wrong.

What We Found

The affected area was a finished basement, approximately 680 square feet, with Category 1 (clean water) damage. Here is what the documentation showed:

Dehumidifiers: Six LGR units were deployed. The IICRC S500 standard for equipment deployment in a finished space calculates appropriate dehumidifier capacity based on the affected area and the evaporation load. For 680 square feet of Category 1 damage, the calculation supports 4 to 5 units. Six units represent approximately 20-25% over-deployment — not egregious, but a starting point.

Air Movers: Twelve air movers were deployed. The S500 calculation for finished areas typically yields one air mover per 50-60 square feet of affected surface. For 680 square feet, 12-14 units is within the defensible range. This line item was not the problem.

The Drying Logs: This is where the case broke open. The contractor maintained daily moisture logs — as required. Those logs showed that the affected materials reached dry standard on Day 8. The target moisture content for the drywall and wood framing was achieved. The job was done.

The equipment ran for 13 more days.

There is no standard-based justification for running drying equipment after the documented dry standard has been achieved. The S500 is explicit: equipment is removed when the structure reaches dry standard, not when the contractor decides the job is done.

The Math

The 13 days of unsupported equipment runtime — running the full complement of dehumidifiers and air movers — accounts for the majority of the disputed $16,600. The math is not complicated once you have the drying logs and the standard in front of you.

The Outcome

We produced a written analysis documenting the S500 equipment calculation, the dry standard achievement date from the contractor's own logs, and the unsupported runtime. The analysis was organized as a line-item reconciliation — what was billed, what was supported, and what was not.

The homeowner used the analysis to dispute the contractor's demand. The contractor, faced with their own documentation showing the job was complete on Day 8, could not defend the additional 13 days. The dispute was resolved.

What This Means for You

Equipment runtime is the single most common source of inflated water damage invoices. Contractors know that most homeowners cannot read drying logs, do not know the S500 equipment calculation, and will not challenge a professional's claim that "the job took that long."

If your water damage invoice includes more than 7-10 days of equipment runtime for a straightforward loss, ask for the drying logs. If the logs show the materials reached dry standard before the equipment was removed, you have a documented basis for disputing the excess charges.

You do not need to accept the contractor's word. The data is in the logs.