How to Winterize Your Plumbing

Castillo WorksUncategorized

As the winter months approach, it’s essential to prepare your home’s plumbing to prevent costly and inconvenient issues caused by freezing temperatures. At Castillo Works, we understand the importance of winterizing your plumbing in San Diego, where even mild winters can occasionally bring chilly nights. Here are some practical steps you can take to protect your plumbing system:

1. Insulate Exposed Pipes

Pipes in unheated areas such as basements, crawl spaces, attics, and outside walls are particularly vulnerable to freezing. Insulate these pipes using pipe insulation sleeves or wrapping them with heat tape. This helps to maintain a consistent temperature and prevent freezing.

2. Disconnect and Drain Outdoor Hoses

Disconnect all garden hoses from outdoor faucets and drain them thoroughly. Store hoses indoors if possible. Leaving hoses connected can cause water to freeze and expand back into the faucet and plumbing pipes inside your home.

3. Shut Off Outdoor Faucets

Locate and shut off the water supply to outdoor faucets, commonly known as hose bibs or sillcocks. Drain any water remaining in the pipes by opening the faucet and leaving it open during the winter months.

4. Insulate Outdoor Faucets

For additional protection, consider covering outdoor faucets with foam faucet covers. These inexpensive covers can be found at most hardware stores and help insulate the faucet from freezing temperatures.

5. Seal Air Leaks

Inspect your home for any gaps or cracks near pipes, windows, and doors. Seal any leaks with caulk or insulation to prevent cold air from reaching your pipes and causing them to freeze.

6. Keep Interior Doors Open

Keep interior doors open to allow warm air to circulate throughout your home, especially in areas where plumbing is located. This helps maintain a consistent temperature and prevents cold spots where pipes are more likely to freeze.

7. Let Faucets Drip

On particularly cold nights, allow faucets connected to vulnerable pipes (such as those in exterior walls) to drip slowly. This helps relieve pressure in the system if freezing does occur.

8. Service Your Water Heater

Winter is a good time to have your water heater serviced by a professional. Regular maintenance ensures it operates efficiently and reliably throughout the colder months.

9. Prepare for Vacations

If you plan to be away from home during winter, take extra precautions to prevent frozen pipes. Set your thermostat to at least 55°F (13°C), and ask a neighbor or friend to check on your home periodically.

10. Know Your Shut-Off Valve

Locate and label the main water shut-off valve in your home. If a pipe does burst, turning off the main water supply quickly can minimize damage. It’s also a good idea to know where individual shut-off valves are for sinks, toilets, and appliances.


Taking the time to winterize your plumbing can save you from the hassle and expense of dealing with frozen or burst pipes. If you have any concerns or need assistance with winterizing your plumbing in San Diego, Castillo Works is here to help. Our experienced team can provide advice, inspections, and any necessary repairs to ensure your plumbing system remains in top condition throughout the winter.

Contact us today to schedule a consultation or service appointment. Don’t wait until it’s too late—take proactive steps now to protect your home’s plumbing this winter.

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