How to winterize your pipes?

Author: Lucienne Goldner  |  Last update: Friday, March 28, 2025

Tips for Winterizing Your Plumbing
  1. Know where your main water shut-off valve is before problems arise. ...
  2. Pipe insulation provides your first line of defense against cold temperatures and frozen pipes. ...
  3. Disconnect and store garden hoses. ...
  4. Turn off and drain sprinkler systems. ...
  5. Keep out the cold. ...
  6. Seal air leaks.

How do you winterize plumbing in a house?

How to Winterize Your Pipes
  1. Insulate Your Pipes.
  2. Disconnect Exterior Hoses.
  3. Shut Off the Main Water Valve.
  4. Blow Excess Air Out of Your Pipes.
  5. Drain Your Toilets and Water Heater.

How do I prepare my pipes for winter?

First, insulate your pipes to protect them from freezing temperatures. Second, regularly check your pipes for signs of wear and tear, such as corrosion or leaks. Third, avoid pouring grease, oil, or other harmful substances down your drains, as this can cause buildup and clogs.

Is it safe to put antifreeze in pipes?

No, you generally should not put antifreeze into potable water piping because several kinds (methanol and ethylene glycol) are highly toxic. An intermittently-occupied mountain cabin can be designed for the potable water piping to drain down to leave the pipes empty while the structure is unoccupied and unheated.

What is the best way to prevent pipes from freezing?

When the weather is very cold outside, let the cold water drip from the faucet served by pipes that are susceptible to freezing. Running water through the pipe - even at a trickle - helps prevent pipes from freezing because the temperature of the water running through them is above freezing.

How to Drain Pipes for the Winter | This Old House

What is the most common place for pipes to freeze?

Location in the property: The pipes most likely to freeze are those most exposed to the elements, such as those in unfinished attics, basements, or garages, are at the highest risk of freezing. Drafty areas increase the risk due to wind chill, and pipes in exterior walls close to the cold are often the first to freeze.

Should you drip all your faucets?

Set faucets to a small, steady drip rather than a stream to conserve water while preventing freezing. Drip the faucet farthest from your home's main water valve. “You don't have to drip them all—one or two is fine,” Sperlich told USA TODAY.

How to keep toilet lines from freezing?

Use foam pipe insulation or heat tape to wrap pipes exposed to cold air. Insulate pipes: “Use foam pipe insulation or heat tape to wrap pipes near the toilet, especially those exposed to cold air in basements, crawl spaces, or exterior walls,” advises Fleming.

Will antifreeze unfreeze pipes?

Antifreeze will provide a small amount of help in thawing ice, but this should not be treated as a primary thawing technique.

How much antifreeze do I need to winterize my house?

Since you can't blow air into your drainage system, you need to winterize them by adding antifreeze. And you're going to need a lot of it. The average house might need 15-20 gallons.

Is it better to cover outside faucets or let them drip?

If you live in a climate with freezing temperatures, you'll want to cover your outdoor faucets in the winter rather than dripping them. Even with a vigorous drip, frigid temperatures can travel through your faucet and freeze the connecting pipes. Before using a cover, you'll need to properly winterize your faucet.

Should I turn off my hot water heater if my pipes are frozen?

Frozen pipes can cut off your home's water supply and cause damaging leaks. In many cases, the help of a plumber is needed to resolve the problem. To prevent further damage, it is generally recommended that you turn off your main water supply valve and your water heater until repairs have been made.

Can you use towels to wrap pipes?

Wrap pipes.

If your pipes are already on their merry way towards freezing, wrapping them with warm towels might do the trick. You can cover them with the towels first and then pour boiling water on top, or use already-wet towels — if your hands can stand the heat (use gloves for this).

How do you prepare pipes for winter?

Prep Pipes for Winter
  1. Locate and exercise the master water shut-off valve. The valve is usually located where the water line enters the house – sometimes near the water heater or washing machine. ...
  2. Disconnect and drain outdoor hoses. ...
  3. Insulate pipes or faucets in unheated areas. ...
  4. Seal off access doors, air vents and cracks.

How much does it cost to winterize pipes?

Pipe Insulation:

DIY materials: $50 to $200. Professional installation: $200 to $1,000. Potential Energy Savings: Up to 3% on water heating costs. Annual Savings: $40-$60 for an average home.

How to winterize a toilet?

Winterizing Toilets and Drains

Detach the water supply hose from the side of the toilet and let the water drain out. Have a bucket or towel ready to catch water drips. Pour non-toxic antifreeze into the toilet tank and then flush the toilet to distribute it to the overflow lines.

Can I put antifreeze in my house pipes?

Antifreeze for homes is a liquid that contains chemicals that lower the freezing point of water, protecting pipes and other plumbing components from bursting. Without anti-freeze, residual moisture in plumbing systems can freeze and expand, causing cracks in the pipes, joints, or other fittings in a plumbing system.

Will pouring hot water down drain unfreeze pipes?

The job goes more quickly by pouring hot water or a mixture of vinegar, baking soda and salt water down the drain. Space heaters, hair dryers and heating pads are highly efficient tools for unfreezing a drain pipe. If a frozen drain line ruptures, turn off your home's main water supply.

Should you leave faucets open when water is turned off?

Pipes: Turn off water supply to the house and drain pipes to protect them from freezing. You can empty pipes by running the water and flushing the toilets after the water has been turned off. After draining the pipes, it is a good idea to leave the faucets open to prevent pressure build up from any water that remains.

Can I flush my toilet if my pipes are frozen?

In most cases, no. Attempting to do so can cause pressure buildup in the pipe and lead to bursting. Additionally, flushing a toilet with a frozen pipe can result in unsanitary conditions due to a lack of proper drainage. Turn off the water supply and address the frozen pipe before attempting to use your toilet again.

Will shutting off water keep pipes from freezing?

Prevent Frozen Pipes

Moving water keeps pipes from freezing. Find shut off valves for emergencies. Insulate pipes in unheated areas. Open cupboards and vanities to warm pipes.

Will a toilet crack if it freezes?

“Frozen water can cause the toilet to crack, while freezing in the pipes connected to the toilet can lead to blocked water flow and, in severe cases, even cause the pipe to burst due to the expansion of ice,” says Fleming.

How to tell if pipes are frozen?

A foul smell from the drain or faucet is a less-obvious warning sign. Odors are unable to filter out of the frozen pipe and instead are forced back into the home's faucet. No water or a slow trickle when a faucet is used. Whistling and banging coming from pipes, or strange bubbling sounds when you flush a toilet.

What is considered below freezing?

Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F.

Should you drip cold or hot water when freezing?

When the weather is very cold outside, let the cold water drip from the faucet served by exposed pipes. Running water through the pipe - even at a trickle - helps prevent pipes from freezing.

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