San Antonio doesn't get many hard freezes, but when temperatures drop into the twenties—like we saw in February 2021—frozen pipes and ice-maker lines become a serious concern. Water expands when it freezes, and that pressure can crack copper tubing, plastic supply lines, and even damage your refrigerator's ice-maker valve. A single burst line can dump hundreds of gallons into your home before you even realize what happened.
Let's talk about keeping your appliances safe when the forecast shows freezing weather, and what to do if you wake up to frozen lines.
Preventing Ice-Maker Lines From Freezing
Your refrigerator's water supply line is often the most vulnerable spot in your kitchen. Most run through exterior walls or unheated garage spaces before connecting to the back of your fridge. When CPS Energy issues freeze warnings, take these steps:
- Open cabinet doors under sinks to let warm air circulate around pipes
- Let faucets drip slightly—even a trickle keeps water moving and prevents freezing
- Disconnect and drain garden hoses; close interior shut-off valves to outside faucets
- Insulate exposed pipes in garages, attics, and crawl spaces with foam sleeves (about $3-5 per six-foot section at hardware stores)
- Keep your thermostat at 55°F minimum, even if you're away—the $20-30 extra heating cost beats a $2,000 water damage claim
What to Do When Lines Are Already Frozen
If you turn on a faucet and nothing comes out, or your ice-maker stops working during a freeze, you likely have frozen pipes. Don't panic, but act carefully:
First, locate the frozen section. Feel along exposed pipes for unusually cold spots or visible frost. Open the faucet before you start thawing—this lets water and steam escape as ice melts. Never use an open flame, propane torch, or high-heat gun. You can crack pipes or start fires.
Safe thawing methods include wrapping pipes with towels soaked in hot water, using a hair dryer on low setting, or placing a space heater nearby (never unattended). Work from the faucet back toward the frozen area. Thawing takes patience—sometimes 30 to 45 minutes for a small section.
Checking for Damage After a Freeze
Once water flows again, inspect everything carefully. Look behind your refrigerator for wet spots on the floor or wall. Check the plastic or braided steel line connecting to your ice-maker—if you see bulges, cracks, or pinhole leaks, replace it immediately. A new supply line costs $10-25 and takes ten minutes to install.
Run your ice-maker through several cycles and monitor for leaks. Sometimes damage doesn't show up until pressure builds during normal operation.
When Appliances Don't Survive the Freeze
If your refrigerator's ice-maker valve cracked or your washing machine's fill valve split during a freeze, repair costs can run $200-400 depending on the part and labor. For appliances over eight years old, that's often half the cost of replacement. Whether you're dealing with freeze damage or just need reliable appliances that can handle Texas weather, our team can walk you through options. We keep our $899 in-stock washer and refrigerator models ready for San Antonio families who need quality equipment without the wait.
Remember: prevention beats repair every time. When KSAT weather calls for a freeze, spend fifteen minutes protecting your pipes and appliances. It's cheaper than calling a plumber at 2 AM.