Yes — when a clogged or failed condensate line overflows and floods a finished ceiling weeks after you have left the job, the resulting water damage to the property is a completed-operations claim, and the standard general liability form answers it through the products-completed-operations hazard. It is the most common completed-operations loss in the HVAC trade, and it carries one nuance that contractors misread more than any other: the water damage to the property is covered, but the cost to redo your own faulty line is not. This post walks the claim, the nuance, and what to confirm on your own policy.
The condensate-line claim is the everyday version of the exposure that defines HVAC — the work that fails after you leave. The full treatment lives on the general liability page, and the broader question of whether the policy answers the install that fails after the job is covered in does general liability cover completed operations for HVAC. Here the focus is the condensate overflow specifically, and the seam it runs along.
The most common HVAC completed-operations claim
A condensate line removes the water that an air conditioner or high-efficiency furnace pulls out of the air, and it runs continuously through the cooling season. When it clogs with biological growth, loses its slope, or was not piped correctly, it backs up and overflows — and because the equipment is often in an attic, a closet, or above a finished ceiling, the water has somewhere expensive to go. A soaked ceiling, ruined drywall, damaged flooring, and stained finishes show up days or weeks after the crew is gone.
That is third-party property damage arising out of finished work — the textbook completed-operations claim, and the one HVAC contractors see most often. It is less dramatic than a fire or a carbon-monoxide claim, but it is far more frequent, which is exactly why understanding how the coverage responds matters. Both a residential service-and-replace shop and a commercial mechanical contractor carry the exposure, just at different scales.
How completed operations answers the water damage
The standard commercial general liability form delivers completed operations through the products-completed-operations hazard: it responds to third-party bodily injury and property damage arising out of your finished work, away from your premises, after the job is done. The water damage a failed condensate line does to the ceiling and finishes below lands inside that grant. And because the loss usually surfaces on a delay, the occurrence trigger does the heavy lifting — standard contractor general liability responds based on when the damage happened, so the policy in force when you did the work is generally the one that answers the overflow weeks later. Wording and form numbers vary by carrier, so confirm the products-completed-operations hazard is granted on your form, and check the exact form and edition.
One quick boundary: a condensate overflow is ordinary property damage, not a pollution event. The pollution exclusion is the seam that matters for a refrigerant release, which general liability generally excludes and which a separate contractor pollution liability line can address. Water from a failed line does not run down that path — it stays on the completed-operations side as property damage.
The nuance: the ‘your work’ exclusion
Here is the part contractors misread, and it is the most important paragraph in this post. Completed operations answers the third-party property damage your faulty line causes — the soaked ceiling, the ruined flooring, the damaged finishes below. It does not pay to tear out and redo your own defective condensate work. That cost is addressed separately under the policy’s ‘your work’ exclusion, which is about the work product itself rather than the damage it does to others.
The clean way to hold the two apart: the damage to the property around your work is the covered side; the rebuild of your own faulty line is treated differently. The water-damaged ceiling below the attic air handler is the completed-operations claim; re-piping the condensate line that caused it is your own work product. Reading those two together — against the exact ‘your work’ wording on your own form, because the language varies by carrier — is what keeps a contractor from misreading what the claim will and will not do.
How to check your own policy
The mechanics above turn into three concrete things to confirm — the actionable part of this post:
- Confirm completed operations is granted, not excluded. The products-completed-operations hazard is part of the standard CGL and usually included, but verify it appears on your form. Wording and form numbers vary by carrier — confirm the exact form and edition on your policy.
- Read the ‘your work’ exclusion language. Understand before a claim that the resulting water damage is the covered side and the rebuild of your own line is treated separately. The exact wording governs, so read it on your own form.
- Check the products-completed-operations aggregate. This separate annual limit applies specifically to completed-operations claims. Set it to match your real install and changeout volume.
Manage the most common loss on both sides
The condensate overflow is the HVAC claim you are most likely to actually file, which makes both the coverage and the craftsmanship worth getting right. Carry general liability with completed operations confirmed and its aggregate set to your real volume, keep the policy continuous so the occurrence trigger protects each job’s tail, and know which side of the ‘your work’ seam a given cost falls on before the call comes. A residential HVAC contractor and a commercial HVAC contractor both file this one.
Proper line slope, secondary drain pans, float switches and overflow safety devices, trap priming, and documented commissioning — measured against OSHA safety standards — reduce how often a line floods a finished space, which is the other half of managing the trade’s most common loss. But the coverage question is settled before any of that: a condensate overflow that damages the property is a completed-operations claim. When you are ready, start a quote, read the full general liability treatment, or step back to what drives HVAC insurance costs to see where this coverage sits in the program.