Overview
Keep cabinet doors open under sinks on exterior walls, let faucets drip during extreme cold, and take other precautions to prevent pipes from freezing and bursting.
Step-by-Step Guide
Identify vulnerable pipes
Pipes most at risk are those in exterior walls, unheated garages, crawl spaces, attics, and under kitchen or bathroom sinks on outside walls. Trace your plumbing to understand which pipes are exposed to cold. Check your home's blueprint or follow pipes visually from the water heater outward.
Open cabinet doors under sinks
When temperatures drop below 20 degrees F, open the cabinet doors under kitchen and bathroom sinks that are on exterior walls. This allows warm indoor air to circulate around the pipes. Remove any cleaning products or chemicals if children or pets are present.
Let faucets drip during extreme cold
Turn on both hot and cold faucets served by exposed pipes to a slow, steady drip. Moving water freezes at a lower temperature than standing water. Even a pencil-thin stream can prevent freezing. This is especially important overnight when temperatures bottom out.
Keep interior temperature consistent
Set your thermostat to at least 55 degrees F at all times, even at night or when you are away. Resist the temptation to lower the heat significantly at night -- a frozen pipe repair costs far more than the heating bill difference. If traveling, never turn off the heat entirely.
Insulate exposed pipes
Install foam pipe insulation sleeves on all exposed pipes in unheated areas. Pay special attention to pipes in the crawl space, attic, and garage. For pipes that have frozen before, add thermostatically controlled heat tape beneath the insulation.
Disconnect and drain outdoor hoses
Before the first freeze, disconnect all garden hoses from outdoor faucets. Shut off the interior valve that supplies the outdoor faucet (if your home has one), then open the outdoor faucet to drain remaining water. Leave the outdoor faucet open all winter.
Seal gaps and cracks near pipes
Inspect where pipes enter the house through exterior walls and seal any gaps with expanding foam or caulk. Even small holes can let in enough cold air to freeze a pipe. Check around electrical and cable entries as well.
Know how to shut off your water in an emergency
Locate your main water shut-off valve and make sure it works. If a pipe bursts, shutting off the water immediately limits damage. Tag the valve with a label so any household member can find it quickly.
What You'll Need
Tools
- - Flashlight
- - Caulk gun
- - Adjustable wrench (for hose connections)
Materials
- - Foam pipe insulation sleeves
- - Expanding foam sealant
- - Heat tape (for high-risk pipes)
- - Foil tape
Cost Estimates
DIY Cost
$10 - $50
Professional Cost
$150 - $500 (preventive measures); $1,000 - $5,000+ (burst pipe repair)
Safety Tips
- Never use an open flame (torch, candle, or space heater with exposed element) to thaw frozen pipes -- this is a serious fire hazard.
- If you find a frozen pipe, use a hair dryer, heat lamp, or warm towels to thaw it slowly.
- Keep a fire extinguisher accessible if you use any electric heat source near pipes.
- Know the location of your main water shut-off valve before an emergency happens.
When to Call a Professional
Call a plumber immediately if a pipe has already burst or if you cannot locate or thaw a frozen pipe. A plumber can also relocate chronically freezing pipes to interior walls or install recirculating systems for long-term prevention.
Pro Tip
If you are going on vacation during winter, ask a neighbor or friend to check your house daily. Alternatively, install a smart water leak sensor and a Wi-Fi thermostat so you can monitor temperatures remotely.
Common Mistakes to Avoid
- Lowering the thermostat too much at night to save on heating -- the savings are wiped out by one burst pipe.
- Forgetting to disconnect garden hoses before the first freeze.
- Only insulating cold water pipes -- hot water pipes freeze too when the heater is off.
- Closing off rooms without adjusting heat -- pipes in unheated rooms freeze quickly.
- Assuming your pipes are safe because they didn't freeze last year -- colder winters or changed insulation can shift the risk.
Local Plumbers in Fishers

Benjamin Franklin Plumbing of Indianapolis
Indianapolis, IN
(317) 886-0567Bob The Plumber
Indianapolis, IN
(317) 402-7679
Pristine Plumbing
Indianapolis, IN
(317) 680-7064Founding Member
Premium spot in Fishers
Ambassador
Lead the Fishers community
Founding Member
Premium spot in Fishers
Fishers Housing Market
Median Home Price
$428,900
Homes for Sale
179
Price per Sq Ft
$179
Local Pros
365
Home Service Professionals Near Fishers
Median Household Income
$128,141
Median Home Value
$370,200
Median Rent
$1,491/mo
Homeownership Rate
76.1%
Population
100,918
Median Year Built
2002
Source: U.S. Census Bureau, ACS 2023 5-Year Estimates
Fair Market Rents — Fishers
Studio
$1,118/mo
1 Bedroom
$1,267/mo
2 Bedroom
$1,473/mo
3 Bedroom
$1,907/mo
4 Bedroom
$2,338/mo
Source: HUD FY2026 Fair Market Rents — Indianapolis-Carmel, IN HUD Metro FMR Area
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Related How-To Guides
How to Insulate Exposed Pipes
Add foam insulation sleeves to pipes in crawl spaces, garages, and attics to prevent freezing, reduce condensation, and improve energy efficiency.
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Prepare for power outages and severe weather with flashlights, batteries, water, blankets, non-perishable food, and a battery-powered radio. A well-stocked kit gives your household peace of mind.
