How to Winterize Your Plumbing: Step-by-Step Guide & Tips

As cold weather settles in on Long Island, many homeowners start to worry about frozen pipes and water damage. That’s why, in this step-by-step guide, our team at Benitez Plumbing, Heating & Cooling will show you how to protect both your indoor and outdoor plumbing for winter. Taking the time to winterize your pipes now can help you avoid broken pipes, water leaks, and costly repairs later. With just a few simple steps, you can keep your water running and prevent your pipes from freezing when temperatures drop.

What Is Plumbing Winterization, and Why Is It So Important?

First, let’s define what winterization means. Plumbing winterization means preparing your home’s water pipes and fixtures to withstand freezing temperatures. In essence, you are winterizing pipes by insulating them, removing standing water from vulnerable areas, and sealing out cold air. This process is crucial because water expands as it freezes. And that expansion can crack or burst pipes, leading to major water damage once everything thaws. Frozen pipes can leave you without running water and result in a substantial plumbing repair bill, which is why adding these layers of protection to your plumbing system is crucial to keep it safe from the cold.

Winterizing Your Interior Plumbing System: 5 Crucial Steps

Interior and exterior plumbing face different winter challenges, so we’ve organized this guide into two clear, step-by-step sections that tackle each one separately. Inside your home, focus on protecting pipes in unheated or drafty areas and ensure your entire plumbing system is prepared for winter. You can follow these five crucial steps to safeguard your interior plumbing:

1. Inspect All Interior Pipes for Leaks

Start by inspecting your indoor plumbing for any existing leaks or drips, as even a small leak can worsen in freezing conditions. Water seeping from a small crack can freeze, expand, and turn that crack into a burst pipe. Check under sinks, around toilets, along basement ceilings, and near appliances like your washing machine and water heater. You can also use a flashlight to spot any moisture or corrosion on pipes and joints. If you find leaks, have them repaired with a plumber as soon as possible.

2. Insulate Exposed Pipes in Unheated Areas

Pipes that run through unheated spaces are the most likely to freeze. These often include pipes in attics, crawl spaces, garages, and exterior walls. To protect these vulnerable pipes, the best solution is to wrap them with insulation. You can use foam pipe insulation tubes, rubber insulation tape, or even old towels or pool noodles as alternatives. Ensure that every inch of pipe, including bends and joints, is covered, and secure the insulation to prevent it from shifting out of place. This simple step is one of the most effective ways to protect the pipes inside your home from cold temperatures.

3. Adjust Your Water Heater Settings

Your water heater also needs a little attention before winter arrives. First, check the temperature setting on your heater’s thermostat. For most homes, around 120°F is an optimal setting for efficiency and comfort. If you’ll be traveling or leaving the house unheated for an extended period, consider using your water heater’s “vacation” mode or lowering the temperature to the minimum setting.

4. Seal Drafty Gaps Around Pipe Penetrations

A common cause of frozen indoor pipes is cold air sneaking in through gaps where pipes penetrate walls or floors. Take a tour of your basement, kitchen, and bathrooms to find any holes or openings around pipes (for example, under sinks where plumbing comes through the cabinet, or where your water main or gas line enters the house). If you feel cold drafts or see open gaps, seal them up before winter.

5. Open Cabinet Doors to Circulate Warm Air

One of the easiest indoor winterization tips is simply opening up your cabinets. In places like your kitchen or bathroom, pipes are often located along exterior walls, inside cabinetry. When the temperature drops, especially overnight, those cabinet interiors can get much colder than the rest of the room. And, by opening the cabinet doors, you allow warm air from your home’s heating to flow around the pipes.

Winterizing Your Exterior Plumbing System: 5 Crucial Steps

Outdoor plumbing components are most vulnerable to damage in freezing weather, so it’s crucial to prepare them for winter. Your exterior faucets, pipes, and irrigation systems need attention to ensure they don’t become ice-filled trouble spots. Here are five crucial steps to winterize the outside of your plumbing system:

1. Disconnect and Drain Garden Hoses

Before the first freeze, disconnect every garden hose from your outdoor faucets (hose bibs). This is a must-do step. A hose left attached can trap water in the faucet and the hose. When that water freezes, it expands and can actually crack the faucet or the pipe inside the wall. Once you’ve removed the hose, drain all the water out of it.

2. Shut Off and Drain the Exterior Faucet

Many homes in our area have a shut-off valve inside for each outdoor faucet. Locate the interior shut-off (often in the basement or crawl space near where the exterior spigot pipe goes out). Turn that valve off to stop the water supply to your outdoor faucet. Next, go outside and open the faucet fully to drain any water sitting in the pipe.

3. Blow Out and Winterize Sprinkler Lines

If you have a lawn irrigation system or outdoor sprinkler lines, they require special care to remain intact throughout the winter. Start by turning off the sprinkler system’s main water valve, which is usually inside the house or in a valve box. After the water supply is off, the best method is to “blow out” the sprinkler lines with compressed air. This forces any remaining water out of the underground pipes.

4. Insulate Outdoor Pipes and Spigots

Just as you insulated pipes indoors, you should protect any plumbing that remains outdoors. After draining, cover your exterior faucet (spigot) with an insulating foam cover. These inexpensive covers are sold at hardware stores and are very easy to install. Again, if you don’t have a store-bought cover, you can wrap the spigot in rags or an old towel and secure it with plastic and tape as a temporary insulation.

5. Protect Well Pump and Pool Equipment

If your home uses a well for water, it’s vital to protect the well pump and plumbing around it. Many well pumps are in basements or well houses, but if yours is above ground or in an unheated enclosure, make sure it’s insulated or otherwise kept warm. Likewise, if you have a swimming pool or hot tub that you shut down for winter, be sure to winterize that system. Drain the pool’s pump, filter, and any pool plumbing lines according to the manufacturer’s instructions.

Frozen Pipes: What Happens and How to Fix It

Despite your best efforts, you might occasionally encounter a frozen pipe in your home. So what happens when a pipe freezes, exactly? When water inside a pipe turns to ice, it expands in volume. This expansion puts pressure on the pipe’s walls and joints. If the pressure gets high enough, the pipe can crack or burst open. You won’t notice the damage immediately while the water is frozen. But as soon as that ice thaws, water will start leaking (or gushing) from the break.

If you turn on a faucet during a cold snap and nothing comes out, you may have a frozen pipe. Here are some diy tips you can use to fix it:

• Turn off your main shut-off valve.
• Check likely spots (exterior walls, crawl spaces, attics) for the frozen section.
• Thaw gently with a hair dryer or heating pad (never an open flame), working from the faucet back.
• Keep a nearby faucet slightly open so melting water can drain and ease pressure.