Swamp Cooler Removal & Conversion
The plumbing side of swamp-cooler-to-AC conversion — capping the roof water line, removing floats, and sealing penetrations against leaks.
Switching from a swamp cooler to refrigerated air? Good call in this heat. But there's a plumbing side to that job the HVAC crew often leaves behind: the water line that runs up to the cooler on your roof.
That quarter-inch supply line kept the cooler's pads wet for years. Once the cooler comes off, an abandoned, uncapped or half-removed line is a liability. It can weep at the float valve, sweat and drip inside the wall, or split on a rare cold snap — and because it's up on the roof, you won't notice until there's a stain on the ceiling. A leak up there always finds its way down.
We handle the plumbing half of a swamp-cooler-to-AC conversion the right way: shut off and cap the line at the source, remove the float and rooftop components, bleed and drain the run, and make sure nothing's left to leak onto your roof.
An abandoned cooler line left open or loosely capped on the roof is a leak and a water-entry point waiting to happen.
The float valve that fed the cooler keeps letting water through if it isn't shut off and removed properly.
Brown spots on a ceiling or wall below where the cooler sat often trace back to its supply line, not the roof itself.
A dead cooler line still tied to house pressure can burst or weep. It needs isolating at the source, not just a pinch up top.
The wrong way is to snip the line on the roof and crimp the end — that leaves pressurized water sitting in a dead run, waiting to fail. The right way starts inside: we trace the cooler line back to where it tees off your plumbing, add a proper shutoff or cap it cleanly at the source, then remove the float valve and the rooftop components.
We bleed and drain the abandoned run so there's no trapped water to freeze or weep, and we seal the roof penetration where the line came through. If the line ran through a wall to a rooftop unit, we make sure nothing's left to sweat behind the drywall. Where the old plumbing is corroded or tied into aging pipe, we'll flag whether a small repipe section or a leak check makes sense while we're in there.
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Evaporative coolers are everywhere in the valley's older housing stock, especially the east side and neighborhoods off Boulder Highway where homes from the cooler era still stand. As families convert to refrigerated air — and as drought and water rules push people off swamp coolers — we get steady calls to clean up the plumbing the HVAC swap left behind. Our swamp cooler conversion plumbing guide covers what's involved.
There's a water-savings angle too. A swamp cooler drinks water all summer to keep its pads wet — no small thing during a drought and tightening water rules. Capping that line for good is one less thing drawing water and one less thing to leak. We handle these conversions across Sunrise Manor and the older east-valley streets, start to finish on the plumbing side.
The whole point of doing the plumbing side right is that you never think about it again. When we finish a cooler-line removal, there's no pressurized dead run in the attic, no float valve slowly weeping, and no open penetration for the next monsoon to find. The line is dead at the source, the roof is sealed, and the water that used to feed the cooler is off for good.
We also leave you with a heads-up on anything we noticed up there — a tired section of nearby pipe, a roof area worth watching — so a small conversion doesn't hide a bigger surprise. If the old cooler line tied into aging galvanized or poly, that's worth knowing before it fails on its own, and we'll point you to a repipe only if it genuinely makes sense.
We don’t post fake flat rates — every home is different. Here’s what goes into your written, up-front price:
You always get the price in writing before we start. Call (614) 830-0578 for a free estimate.
We bring swamp cooler removal & conversion to homes and businesses valley-wide — the same up-front pricing and licensed, insured crews whether you're near our south-valley shop or across town.
Usually not fully. HVAC crews focus on the air side and often just cap the line on the roof. The plumbing side — shutting it off at the source, removing the float, bleeding the run and sealing the penetration — is what we do, so it doesn't leak later.
A line crimped only on the roof still holds house pressure along its whole length, so any weak fitting can weep or burst. Isolating it where it tees off your plumbing takes the dead run out of service entirely — the safe way to do it.
Yes. An abandoned line can drip at the old float, sweat inside the wall, or split, and since it sits on the roof the water travels down before you notice — showing up as a ceiling stain. Removing and sealing it properly prevents that.
Happily. We coordinate with your HVAC crew so the water line is handled as they pull the cooler — you get the whole conversion done right without playing middleman. Call (614) 830-0578 to schedule around your install.
A little — an evaporative cooler drinks water all summer to keep its pads wet, so capping that line ends a real seasonal draw. It won't transform your bill on its own, but combined with switching off the cooler's constant water use, it's one more thing not quietly running up your usage during drought season.
Spiking water bill or a warm spot on the floor? We locate hidden leaks precisely — no guesswork, no needless demolition.
Learn moreDrains, water heaters, leaks, repipes, fixtures — one licensed local team for every home plumbing need, with 24/7 emergency backup.
Learn moreRecurring pinhole leaks or old poly/galvanized pipe? A clean, permitted PEX repipe ends the patch-after-patch cycle for good.
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Local-specificEveryone plans a swamp-cooler-to-AC conversion as an HVAC job. The abandoned water line that fed the cooler is the part that floods ceilings later.
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Local-specificLake Mead is at historic lows, so is the drought why your shower feels weak? The connection is real — but almost never the one people assume.
Read articleCall Mike's Drain and Plumbing at (614) 830-0578 for same-day service and honest, up-front pricing across the valley.
