Freeze damage to pool equipment usually hides until the pump pressurizes the system again, so inspect the pad after the thaw and before switching anything on. Look first for a wet patch under the equipment pad and a crack in the pump lid.
The timing matters because a split pipe or a cracked pump housing can sit silent for anywhere from an afternoon to six weeks. The most expensive mistake is made in the first hour: starting a pump that is still frozen.
North Texas gets a particular kind of freeze that is unusually good at breaking pool equipment: mild weeks on either side of a short, severe cold snap. The National Weather Service recorded 139 consecutive hours at or below freezing at DFW Airport in February 2021. Its summary says “DFW’s high temperature was lower than the record low for the date” on February 15, and most local pads are still measured against that storm. Few owners drain anything for a snap like that, so the damage lands on whatever was holding still water above ground when the temperature dropped.
Wait for the thaw before you touch anything
If the pump was off through the cold and the plumbing is still frozen, starting it forces the impeller against a solid plug of ice, and the motor either burns or the housing cracks. If a valve won’t turn, it’s frozen, and forcing the handle shears the stem.
- Leave the breaker off until air temperatures have been above freezing for several hours and you can see moving water in the skimmer.
- Do not pour hot water on anything. Rapid temperature change on cold PVC or a cold filter tank cracks it, and hot water on a frozen pump seal ruins the seal.
- Do not use a torch or a heat gun. PVC softens well below the point where it looks affected, and a heater with a torch near it is a different category of problem.
A hair dryer or a heat lamp at a distance, used patiently on a specific fitting, is the only heat worth applying, and even then the better answer is usually to wait.
The five-minute walk-around, in order
Do this in daylight, with the pump off, before you restart anything. You’re looking for water where water shouldn’t be, and for shapes that have changed.
- The concrete under the pad. A dark wet patch on a dry day is the most reliable tell there is. Note where it’s wettest, because that’s roughly where the split is.
- The pump lid and pot. Look for a crack radiating across the clear lid, a split along the top of the pot, or a lid that no longer seats flat.
- Every run of exposed PVC. Sight down each pipe. A freeze split is a fine longitudinal line, often only an inch or two long, frequently on the underside where you have to crouch to see it. Run a dry finger along the pipe: you can often feel it before you can see it.
- The filter tank and its clamp band. Look for a weeping seam at the band, a bulge in the tank wall, or a cracked pressure gauge, whose little bourdon tube is one of the first things to go.
- The heater. Look underneath it for water and check for a cracked header at either end. Heater damage is the most expensive item on this list and the hardest to see, because the part that splits is inside.
- The salt cell and any inline feeder. Both are plastic housings full of still water. Check the unions at each end and the cell body for a hairline.
- The pool itself. Look at the tile line and the skimmer throat for new cracking, especially if the water level dropped below the tile during the freeze.
Where the crack usually is
Freeze splits concentrate in the components that hold still water in the largest volume with the thinnest wall, and above ground where the air reaches them. In practice that means the pump pot and lid first, then above-ground PVC, then the filter, then the heater. Buried lines rarely split. If the wet patch is out in the yard rather than at the pad, you are more likely looking at ordinary ground movement, or at a leak that was already developing.
Restarting, and what to watch in the first ten minutes
Once the system is fully thawed and the walk-around found nothing obvious, restart it deliberately rather than casually. Most freeze damage is discovered at this moment, and you want to be standing at the pad when it happens.
- Top the water up to mid-skimmer if the level dropped.
- Open every valve to its normal running position, gently. Nothing should need force.
- Fill the pump pot with water, seat the lid with a lightly lubricated O-ring, and switch on.
- Watch the pressure gauge. It should climb to its usual clean-filter number within a minute or so.
- Walk the whole pad twice while it runs and look for spray, drip, or a growing wet line.
| What you see | Most likely cause | What to do |
|---|---|---|
| Pump runs but pressure stays at zero | Air leak or a split on the suction side | Shut it down. Running dry destroys the seal in minutes. |
| Pump won’t hold prime | Cracked lid, failed lid O-ring, or a split suction pipe | Check the lid first, it’s the cheap answer |
| Water spraying or dripping at the pad while running | Split PVC or a failed union | Turn the pump off and locate it before running again |
| Wet concrete, nothing visible | A split on the underside of a pipe, or the filter seam | Dry the pad, run five minutes, and look again |
| Pressure above your usual clean-filter reading | Ice still in the system, or a closed valve | Shut down and wait for a full thaw |
| Heater won’t fire, or leaks underneath | Cracked header or heat exchanger | Stop. This one isn’t a homeowner repair. |
| Pool water level fell overnight after the freeze | A shell or plumbing leak revealed by the freeze | Run the bucket test before assuming evaporation |
What the repairs cost around here
Freeze repairs are usually cheaper than people fear and more urgent than people treat them. The gap between a patched pipe and a replaced component is most of your bill. The outcomes below run roughly from cheapest to most expensive in the DFW area. What moves the real number is access, meaning how much plumbing has to be cut out to reach the split, and how busy every pool company in the Metroplex is that week. What pool repairs cost in DFW covers what drives each one.
- Pump lid and O-ring. The cheapest outcome on the list, and a common one.
- A section of split PVC. Modest, provided it is accessible above ground. Cost climbs quickly if the split is under concrete.
- Pump housing or a whole pump. A cracked pot usually means a new wet end, and on an older single-speed pump the sensible answer is often a whole variable-speed replacement instead. Our repair or replace guide works through that decision.
- Filter tank. A cracked tank is a tank replacement. The internals normally survive.
- Heater heat exchanger. The expensive one, frequently close enough to the price of a new heater that replacing the unit is the better value on anything older.
Check the warranty before you check the price
Freeze damage is excluded from most manufacturer warranties, on the reasoning that it is a maintenance failure rather than a defect. Homeowner insurance is the better question. Some policies treat a burst pool line the way they treat any other burst pipe, and it’s worth one phone call before you pay out of pocket, particularly if the damage extends into the decking or the yard.
Why this keeps happening here specifically
Three local conditions stack up. Our freezes are short and severe, so few owners prepare for them the way a northern owner prepares for a season. Our pools are built to run year round, with equipment above ground and uninsulated because for most of the year that is the right design. And our power grid has, in recent memory, failed during exactly the events that make freeze protection matter, which removes the one defense that works.
Automatic freeze protection is only as good as the electricity feeding it. A pool whose whole cold-weather plan is a temperature sensor has no plan during an outage. That is why our freeze protection guide covers manual draining as a real option rather than as a footnote.
The delayed failure that catches people out
A split that opens on the pressure side may not leak at all while the pump is off. Plenty of North Texas owners have come through a February freeze apparently untouched, then found a leak in March when the schedule went back up for spring. If your water level starts falling faster than evaporation explains within a few weeks of a hard freeze, treat the freeze as the prime suspect and run the bucket test rather than topping up and hoping.
Where this stops being a homeowner job
Plenty of freeze damage is fixable with a hacksaw, a coupling, and an afternoon. Some of it isn’t, and the line is fairly clear.
- Anything involving the heater. Gas, combustion, and an internal exchanger, all at once.
- Anything electrical: a motor that hums, trips a breaker, or smells hot.
- A leak that is under the deck or out in the yard rather than at the pad.
- A pump that ran dry for any length of time, which needs the seal inspected regardless of how it sounds now.
- Any repair where you would be guessing at which pipe is which.
If you want somebody to look at it, an equipment inspection after a hard freeze is the cheapest diagnostic on our list. Finding a hairline split in February rather than in May is the difference between a scheduled repair and an emergency during the post-freeze rush. We cover Plano, Frisco, McKinney, and Allen among others, and after a metro-wide freeze most pool companies are booked, so calling early matters.
