How to Winterize Your Houston Home and Sprinkler System Before a Freeze

Freezing temperatures and winter storms don’t happen often in Houston — but when they do, they can cause serious damage if homes aren’t prepared. With a freeze expected this weekend, now is the time to take a few simple steps to protect your home, pipes, and sprinkler system.

Most Houston homes aren’t built for prolonged cold, which means small preventive actions can make a big difference. This guide walks you through exactly what to do — clearly, calmly, and without overcomplicating it.

Why Winterizing Matters in Houston

In colder states, homes are designed to handle freezing weather. In Houston, freezes are rare but intense, and that’s why pipes burst, sprinkler systems crack, and water damage becomes widespread almost overnight.

The good news?
Most freeze-related damage is preventable with basic preparation.

Indoor Winterization Checklist for Houston Homes

Drip Interior Faucets

When temperatures drop below freezing, allow faucets to drip slowly.

1. Choose one faucet per side of the home
2. Drip both hot and cold water
3. Prioritize faucets connected to exterior walls

Moving water is less likely to freeze.

Open Cabinets Under Sinks

Open cabinet doors under kitchen and bathroom sinks to let warm air circulate around plumbing. This is especially important for sinks located on exterior walls.

Keep Your Heat On

Even if you’re leaving town:

1. Keep your thermostat set to at least 65°F
2. Avoid turning the heat off overnight

This helps protect pipes throughout the home.

Check Your Heating System

Before the freeze:

1. Make sure your heating system is functioning properly
2. Replace dirty air filters to improve airflow
3. Test the system early so you’re not troubleshooting in freezing weather

Seal Drafts Around Doors and Windows

Cold air entering the home increases the risk of frozen pipes.

1. Check doors and windows for drafts
2. Use weather stripping or towels to block gaps if needed

Protecting Exterior Pipes and Faucets

This is one of the most critical steps for Houston homeowners.

Disconnect Garden Hoses

Remove:

1. Garden hoses
2. Hose splitters
3. Sprinkler attachments

Store them indoors. Leaving hoses attached can trap water and cause pipes to freeze and burst.

Cover Outdoor Faucets

Use insulated faucet covers (foam covers work well and are inexpensive).

1. Make sure they fit snugly against the wall
2. Cover every exterior spigot

Insulate Exposed Pipes

Wrap exposed pipes in:

1. Pipe insulation sleeves
2. Towels or rags (as a backup)
3. Secure with zip ties or insulation tape

If pipes are outdoors or in the garage, add an extra protective layer.

How to Winterize Your Sprinkler System in Houston

Most Houston sprinkler systems do not use air blow-outs, so winterization looks different here than in colder climates.

Turn Off the Irrigation Controller

Set your sprinkler controller to OFF, not just “rain delay.”
Running sprinklers during a freeze can cause serious damage.

Shut Off Water to the Sprinkler System

Locate the sprinkler shut-off valve (often near the main water line or in the garage).

1. Turn the valve off completely

Drain the System

If your system has manual drain valves:

1. Open them
2. Allow water to drain out completely

This reduces the risk of frozen pipes.

Protect the Backflow Preventer

The backflow preventer is one of the most freeze-sensitive parts of the system.

1. Wrap it with insulation, towels, or foam
2. Cover with a weatherproof or plastic cover
3. Do not tape directly to metal pipes

Do Not Run Sprinklers During a Freeze

Even short cycles can cause ice buildup and cracked pipes.

Don’t Forget Plants, Pets, and Outdoor Items

1. Bring potted plants indoors or cover them with frost cloth
2. Cover delicate landscaping near the home
3. Bring pets indoors, especially overnight
4. Secure outdoor furniture and décor

Prepare for Possible Power Outages

While not guaranteed, power outages are possible during winter storms.

1. Charge phones and backup batteries
2. Have flashlights ready (avoid candles)
3. Know where your main water shut-off valve is located

If You’re Leaving Town This Weekend

Before you go:

1. Do not turn off your heat
2. Drip faucets
3. Shut off and drain the sprinkler system
4. Ask a neighbor to check on your home if possible

Final Thoughts for Houston Homeowners

Freezes in Houston are usually short, but the damage can be long-lasting if homes aren’t prepared. Taking a little time now can help you avoid burst pipes, water damage, and costly repairs.

If you have questions about preparing your home, sprinkler system, or what to watch for during a freeze, don’t hesitate to reach out. We’re always here to help our Houston community stay protected — in every season.