Back to Blog
How to Prevent Frozen Pipes in Connecticut Winters
March 10, 2026 7 min read
Connecticut winters regularly bring temperatures well below freezing, and frozen pipes are one of the most common — and costly — plumbing emergencies homeowners face. A burst pipe can release hundreds of gallons of water per hour, causing tens of thousands of dollars in damage.
Which Pipes Are Most at Risk?
- Exterior walls: Pipes running through poorly insulated exterior walls are the most vulnerable
- Unheated spaces: Garages, basements, crawl spaces, and attics
- Outdoor faucets: Hose bibs and irrigation lines
- Kitchen and bathroom cabinets: Pipes against exterior walls, hidden behind cabinet doors
10 Steps to Prevent Frozen Pipes
Before Winter
- Insulate exposed pipes with foam pipe sleeves or heat tape. Pay special attention to pipes in garages, crawl spaces, and along exterior walls.
- Disconnect garden hoses and close the interior shut-off valve for outdoor faucets. Open the outdoor faucet to drain remaining water.
- Seal air leaks near pipes. Check for gaps around dryer vents, electrical wiring, and where pipes enter the home. Use caulk or spray foam.
- Have your plumbing inspected. A professional can identify vulnerable pipes before winter hits.
During Cold Snaps
- Let faucets drip when temperatures drop below 20°F. Even a slow trickle keeps water moving and prevents freezing.
- Open cabinet doors under kitchen and bathroom sinks to let warm air circulate around pipes.
- Keep the thermostat consistent. Don't drop the temperature below 55°F, even when you're away.
- Keep the garage door closed if there are water supply lines in the garage.
If You're Leaving Town
- Keep the heat on — set it no lower than 55°F.
- Consider shutting off the main water and draining the system if you'll be gone for an extended period.
What to Do If a Pipe Freezes
If you turn on a faucet and nothing comes out:
- Keep the faucet open — this relieves pressure as the ice melts
- Apply gentle heat using a hair dryer, heat lamp, or portable heater (never a blowtorch or open flame)
- Work from the faucet toward the frozen area
- If you can't locate or access the frozen section, call a plumber immediately
What to Do If a Pipe Bursts
This is a plumbing emergency. Act fast:
- Shut off the main water valve immediately
- Turn off the water heater
- Call 203 Plumbers at (860) 498-9740 — we offer 24/7 emergency service
- Begin removing standing water to minimize damage
Professional Winterization Services
203 Plumbers offers comprehensive winterization services for homes throughout Stamford, New Haven, Westport, and all of Fairfield and New Haven counties. We'll inspect your plumbing, insulate vulnerable pipes, and help you prepare for Connecticut's toughest weather.
Need a Plumber in Connecticut?
Licensed professionals serving Fairfield & New Haven Counties 24/7.
Call (860) 498-9740