Plumbing How To & DIY

Ask This Old House plumbing and heating expert Richard Trethewey visits New Jersey to install a water softener.

Ask This Old House plumbing and heating expert Richard Trethewey demonstrates some common plumbing mistakes and how to avoid them.

Learn how to switch out one type of sink to another with This Old House plumbing and heating expert Richard Trethewey.

Ask This Old House plumbing and heating expert Richard Trethewey helps locate the leak on a steam boiler that's losing water.

This Old House plumbing and heating expert Richard Trethewey offers remedies to prevent smelly water from wells and water heaters.

This Old House plumbing and heating expert Richard Trethewey explains how new energy-saving regulations affect today's water heaters.

This Old House plumbing and heating expert Richard Trethewey replaces a clogged shower valve that would not allow hot water into the shower

Have a new sink and faucet to install? In our video, we'll show you how to remove your old sink and put in a new one.

Replace two devices, your water heater and boiler, with a single combi boiler unit that’s more efficient and compact.

This Old House plumbing and heating expert Richard Trethewey helps a homeowner repair her leaky kitchen faucet

Watch as This Old House plumbing and heating expert Richard Trethewey demonstrates and shares tips on soldering copper pipe.

Learn how to replace an old kitchen sink with a new one in this how-to video with plumbing expert Richard Tretheway.

Learn how to replace a pedestal sink pop-up assembly with our video and guide.

This Old House plumbing and heating expert Richard Trethewey shows how to install a new water heater without a chimney.

This Old House plumbing and heating expert Richard Trethewey shows you how to properly install a drain pump for your basement sink.

If you need access to water outside during the colder months, learn how to use frost-proof faucets to avoid frozen pipes and water damage.

Learn how to add overflow protection to your laundry room with This Old House plumbing and heating expert Richard Trethewey.

Taming extremely high water pressure with This Old House plumbing and heating expert Richard Trethewey in this helpful video.

This Old House plumbing and heating expert Richard Trethewey shows how to upgrade to a faucet and sprayer in one

This Old House plumbing and heating expert Richard Trethewey and water-quality specialist Doug Oberhamer show how to soften mineral-rich hard water.

This Old House plumbing and heating expert Richard Trethewey takes a look at the wide variety of water-supply pipes

This Old House plumbing and heating expert Richard Trethewey employs his detective skills to find and clear a stubborn clog.

This Old House plumbing and heating expert Richard Trethewey shares some tricks for removing—and avoiding—stubborn disposer jams

Learn how to fix a faulty water valve in a snap with the help of This Old House Plumbing expert Richard Trethewey.

This Old House plumbing and heating expert Richard Trethewey shows tools and techniques for fixing corroded cast-iron pipe

Learn how to connect a refrigerator water and ice dispenser with This Old House plumbing and heating expert Richard Trethewey.

One way to handle nasty moisture buildup in your home is to install a new dehumidifier pump. Read how to complete this do-it-yourself project in our step-by-step guide.

Keep the hot water flowing with This Old House plumbing and heating expert Richard Trethewey and Kevin O'Connor

Learn how to install a water hammer arrestor and silence noisy pipes in this guide from This Old House plumbing expert Richard Trethewey.

Installing a pressure balance shower valve helps you to prevent sudden temperature changes and avoid potential scalding. Read how to handle this task in our guide.

In our guide and video, we'll tell you how to keep backup sewage from entering your home with a floor control system.