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Plumbing

Water Heater Maintenance Tips

Use these 6 easy and inexpensive ways to increase your water heater's efficiency and longevity.

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How to Drain a Water Heater

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows a quick and effective way to drain a sediment-filled electric water heater.

How to Remove Air in Water Pipes

If air is coming out of your water pipes, don’t worry, you may be able to easily fix it yourself. Read on to learn how to tell if air is in your water pipes, and how to get rid of it.

How to Unclog a Toilet Without a Plunger

Got a toilet clog, with no plunger in sight? Read this guide to learn how to unclog a toilet using only simple household items you probably have at hand.

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How to Fix a Leaky Shut-Off Valve

This Old House plumbing and heating expert Richard Trethewey shows how to quickly and easily fix a faulty valve.

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How to Repair a 3 Handle Shower Faucet

Ask This Old House plumbing and heating expert Richard Trethewey repairs and replaces a leaky shower valve.

How to Increase Water Pressure on City Water

Here’s how to fix your water pressure if you’re on city water.

Sump Pump Cover

Should it be covered or sealed up to block out radon gas?

How To Fix a Gurgling Toilet

Is your toilet making a gurgling sound? Read on to learn what might be causing the problem.

How to Install a French Drain

French drains serve to collect and remove groundwater that would otherwise cause a problem. They’re often used along driveways, in damp areas of a lawn, and around house foundations to help keep the basement or crawlspace dry. Read this guide to learn more about how to install a french drain in your yard.

People installing new combination boiler in a basement.
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How to Install a Combination Boiler and Hot Water Heater

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

How to Fix a Dishwasher That Won’t Drain

Dishwasher not draining? Repair can be an easy DIY project. Read our guide to diagnose and fix your dishwasher on your own.

How to Install a Kitchen Sink

From costs to tools and plumbing, here’s what to do for a new kitchen sink installation.

Plumbing expert demonstrating how to unclog a bathroom sink.
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How to Unclog a Bathroom Sink

Ask This Old House plumbing and heating expert Richard Trethewey reveals the best ways to unclog a slow draining bathroom sink.

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How to Fix a Shower Faucet

Learn how to replace an old shower valve with a single handle with This Old House plumbing and heating expert Richard Trethewey.

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Reattach an Undermount Kitchen Sink

Ask This Old House plumbing and heating expert Richard Trethewey uses undermount sink adhesive to reattach a stainless steel kitchen sink to a granite countertop.

How to Fix a Leaking Toilet

Identify parts and problems with this handy guide.

How to Clear Any Clogged Drain

Armed with the right tools and techniques, you can easily unplug stopped-up drains without having to call in a pro.

How to Install a Toilet

This Old House plumbing expert Richard Trethewey's method for putting in a new toilet—or replacing an old one.

Richard Trethewey and Kevin O’Connor work on a garbage disposal
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How to Fix a Garbage Disposal

This Old House plumbing and heating expert Richard Trethewey shows how to fix a badly jammed garbage disposal.

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How to Get Hot Water with a Recirculating Pump

This Old House plumbing and heating expert Richard Trethewey explains how a recirculation line can save energy, money, and time

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Hydraulic Cement for Leaky Basements

Using the right product for patching holes where water seeps in will save you a trip back with a wet vac and a sump pump.

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How to Clean a Clogged Shower Cartridge

Ask This Old House plumbing and heating expert Richard Trethewey travels to New York City to teach a homeowner how to clean her shower cartridge when it gets clogged.

Richard Trethewey tests smart automatic water shut off valves.
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Testing Smart Automatic Water Shut Off Valves

Ask This Old House plumbing and heating expert Richard Trethewey tests two different styles of smart automatic water shutoff valves.

Richard Trethewey connects steel gas pipes.
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How to Connect Steel Gas Pipes

Looking to connect gas pipes in your home? This Old House Plumbing & Heating Expert Richard Trethewey explains a new method for connecting gas pipes, known as "press-connect."

How to Fix a Slow Draining Tub

A slow-draining tub is a common problem, and an irritating one, too. Nobody wants to stand in a deepening pool of murky water while taking a shower. Read our guide to fixing a clogged tub.

How to Find and Hire a Qualified Plumber

Even small leaks can lead to big repairs. Here’s what you should know before hiring a plumber.

Fix a leaky hose spigot
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How to Fix a Leaky Hose Spigot

Ask This Old House plumbing and heating expert Richard Trethewey explains some of the common failure points in hose spigots and how to repair them.

How to Get Rid of Rust in Well Water

This Old House plumbing expert Richard Trethewey has some solutions for a homeowner experiencing iron and rust in their well water.

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How to Install a Gas Lantern

Ask This Old House plumbing and heating expert Richard Trethewey travels to St. Louis to install a gas lantern on an original 1890s home in a historic neighborhood.

Septic System Guide: How It Works and How to Maintain It

A well-maintained septic system is trouble-free and something a homeowner doesn’t have to think about much. Here’s how to keep it that way.

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How to Upgrade to a Pressure Balanced Shower Valve

Richard Trethewey travels to Salt Lake City to replace a shower valve he has never seen before in his career with a conventional pressure balanced one.