Plumber Winterization Tips to Protect Your Home

San Antonio homeowners often underestimate winter plumbing risks because South Texas winters are generally mild. But when arctic cold fronts push temperatures below freezing — as they did during Winter Storm Uri in 2021 — the results can be catastrophic. Burst pipes caused billions of dollars in damage across Texas, and many San Antonio homes suffered extensive water damage because their plumbing wasn't winterized. As a licensed plumber (License RMP46592), C.S.W. Power Solutions has repaired hundreds of freeze-damaged plumbing systems and knows exactly what steps prevent these costly failures.

The most vulnerable pipes in your home are those in unheated areas — attics, crawl spaces, garages, and exterior walls. Pipe insulation sleeves (foam tubes that slip over the pipe) are inexpensive and can prevent freezing in moderate cold. For pipes in extremely exposed locations, consider adding heat tape or heat cable — an electrically powered wrap that maintains pipe temperature above freezing. Pay special attention to outdoor hose bibs, sprinkler system supply lines, and any pipes running through your garage. Disconnect and drain all garden hoses before the first freeze.

If a pipe does burst, the single most important thing you can do is shut off the water supply immediately. Every homeowner should know where their main water shut-off valve is located and verify that it actually works before an emergency. In most San Antonio homes, the main shut-off is near the front of the house where the water line enters from the street. Turn it off and on once a year to make sure it isn't seized or corroded. If it doesn't turn easily or leaks when operated, have it replaced before winter — a simple valve replacement now can prevent catastrophic water damage later.

When temperatures drop below 28°F, open both hot and cold faucets to a slow drip — about 5 drops per second. This keeps water moving through the pipes, which significantly reduces the chance of freezing. Focus on faucets served by pipes running through exterior walls or unheated spaces. Yes, you'll use a small amount of extra water, but the cost is negligible compared to the cost of repairing a burst pipe and the water damage it causes.

If you turn on a faucet and only a trickle comes out during freezing weather, you likely have a frozen pipe. Do not use a blowtorch, heat gun, or open flame to thaw it — this can damage the pipe or start a fire. Instead, apply gentle heat using a hair dryer, heating pad, or towels soaked in warm water. Open the faucet so water can flow as the ice melts. If you can't locate the frozen section or if the pipe has already burst, shut off the main water supply immediately and call C.S.W. Power Solutions at 210-504-9796. We provide fast plumbing services across San Antonio and surrounding areas.