When freezing temperatures hit Connecticut, your pipes could be just one cold night away from bursting. Winterizing your plumbing system isn’t just a good idea — it’s essential.
At L&P Plumbing & Well Service, we help homeowners across Connecticut protect their plumbing systems before the first frost. Whether you’re preparing your year-round home or closing up a vacation property, this step-by-step guide will help you winterize like a pro.
Why Winterizing Matters in Connecticut
Connecticut winters are no joke. With average lows dipping below freezing from December through March, unprotected pipes can:
- Freeze and burst, causing thousands in water damage
- Lead to expensive emergency plumbing repairs
- Reduce water efficiency and pressure
- Cause water heater strain and breakdowns
Complete Plumbing Winterization Checklist
Here’s what you need to do to prepare your plumbing system before winter hits:
1. Shut Off & Drain Outdoor Faucets
Disconnect hoses and use the shut-off valve (usually in the basement) to cut water to outside spigots. Then open the faucet to drain any remaining water.
Pro Tip: Install a frost-free spigot if you don’t already have one.
2. Insulate Exposed Pipes
Pipes in unheated areas like garages, crawlspaces, attics, and basements are most vulnerable. Wrap them with:
- Foam pipe insulation
- Heat tape (for severe exposure)
- Insulated covers for outdoor spigots
3. Service Your Water Heater
Flushing your water heater removes sediment that reduces heating efficiency in cold months. A professional check ensures:
- Optimal temperature settings (120°F)
- Pressure relief valve is working
- No corrosion or leaks
Cold shower in winter? No thanks.
4. Seal Gaps & Cracks
Look for air leaks around pipes where they enter walls. Use caulk or expanding foam to keep freezing air out and warm air in.
5. Drain Unused Plumbing Lines
If you’re closing up a seasonal home or part of your system won’t be used for winter, drain those lines completely. Consider adding non-toxic antifreeze in traps/toilets.
6. Leave Heat On (Even if You’re Away)
Set your thermostat to at least 55°F if you’re leaving your home. Open cabinet doors under sinks to allow warm air to circulate.
7. Know How to Shut Off the Main Water Valve
In case of emergency, turning off your water fast can prevent major damage. Make sure all adults in your home know where the shutoff is and how to use it.
Bonus: Schedule a Professional Plumbing Inspection
DIY is great — but a certified Watertown plumber can catch problems you might miss. L&P Plumbing & Well Service offers affordable winter prep inspections to:
- Check your water heater
- Test sump pumps
- Inspect shutoff valves
- Verify pipe insulation
- Prevent emergencies before they happen
Don’t Let Frozen Pipes Ruin Your Winter
Winter plumbing problems are common, but they’re also 100% preventable. Let L&P Plumbing & Well Service help you protect your home, your budget, and your peace of mind this season.
Call us at (203) 405-8060 or use our online form to schedule your winterization appointment today. Serving homeowners throughout Connecticut with pride and precision.

