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How a Frozen Pipe Bursts

In this DIY Smarts, Ask This Old House plumbing and heating expert Richard Trethewey demonstrates how and why frozen pipes burst.

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How Plumbing Technology is Advancing

During a visit to IBS 2019, Richard Trethewey gave our Pro2Pro editor a lesson in connecting pex tubing, then explored a new water-monitoring device and high-tech training tool

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Testing the Newest Low-consumption Toilets

Ask This Old House plumbing and heating expert Richard Trethewey travels to a plumbing facility in New Jersey to learn about advances in toilet engineering that help save water

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How to Install a Dry Well for a Sump Pump

This Old House landscape contractor Roger Cook shares a permanent way to collect and disperse sump-pump water

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How to Install a GPS-Enabled Smart Thermostat

Ask This Old House plumbing and heating contractor Richard Trethewey installs a thermostat that can be programmed automatically from a smart phone

S20 E6, Richard Trethewey explains how to fit copper pipes
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How to Fit Copper Pipes

Plumbing & Heating Expert Richard Tretheway shows host Kevin O’Connor several methods for making solid, watertight connections, both with solder and without.

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How to Snake a Clogged Drain

Ask This Old House plumbing and heating expert Richard Trethewey shows how to clear a stopped bathtub or shower drain

S20 E11, Richard Trethewey discusses dishwashers
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How to Maintain Your Dishwasher

Plumbing and heating expert Richard Trethewey breaks down all the connections on a dishwasher, how they work, and how to troubleshoot them when they aren’t draining or drying correctly.

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How to Clear a Clogged Bathtub Drain

This Old House plumbing and heating expert Richard Trethewey shows how to fix a slow draining tub

S20 E8, Richard Trethewey installs a utility sink
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How To Install a Utility Sink in a Barn

Master plumber Richard Trethewey installs a utility sink in Mark McCullough’s chicken barn.

S4 E10, Richard Trethewey installs a utility sink
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How to Install a Utility Sink

In this how-to video, This Old House plumbing and heating expert Richard Trethewey installs a utility sink

S9 E8, soldering copper pipe
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How to Cut and Solder Copper Pipe

This Old House plumbing and heating expert Richard Trethewey shares some basic pipe-joining techniques

S20 E1, Richard Trethewey on soldering
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Celebrating Craftsmanship: Soldering Basics

Plumbing and heating expert Richard Trethewey explains some general soldering techniques and how to connect water piping.

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How to Diagnose Problems with Well Water Systems

Ask This Old House plumbing and heating expert Richard Trethewey explains how a well water pump works and why it could be behind a high electrical bill.

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How to Replace a Kitchen Faucet

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner replace her kitchen faucet.

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How to Hook Up Washing Machine Plumbing

This Old House plumbing and heating expert Richard Trethewey re-plumbs a washing machine.

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How to Replace a Kitchen Sink

Ask This Old House Plumbing and Heating Expert Richard Trethewey explains how to replace a kitchen sink and faucet from start to finish.

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How to Replace a Spigot

Ask This Old House Plumbing and Heating expert Richard Trethewey explains a variety of failure points in a hose spigot and demonstrates how to replace one that is damaged beyond repair.

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How to Replace an Old Faucet

This Old House plumbing and heating expert Richard Trethewey shows the proper way to replace an old kitchen faucet

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How to Install a Pedestal Sink

Plumbing expert Richard Trethewey makes a challenging bathroom renovation task look easy

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How to Install a Garbage Disposal

Garbage disposals are a helpful tool to help prevent pesky kitchen odors, as well as stop food from going down the pipes and causing plumbing issues. Watch as Ask This Old House plumbing and heating expert Richard Trethewey demonstrates how to install a garbage disposal in your kitchen.

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How to Choose and Maintain a Garbage Disposer

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

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How to Prevent Frozen and Burst Pipes

Ask This Old House plumbing and heating expert Richard Trethewey offers a few tips to keep water from freezing up in your pipes during the winter months.

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How to Prevent Frozen Pipes

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows various ways to prevent and thaw frozen pipes.

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How Does a Siphon Work?

This Old House Plumbing & Heating Expert Richard Trethewey demonstrates how siphons work. Richard shows how siphons are the basic principle that make toilets work, even if the water supply in the house was turned off.

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What Can and Can't Go Down a Garbage Disposer

Ask This Old House plumbing and heating expert Richard Trethewey explains what foods should and should not go into garbage disposers.

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How to Replace a Shower Pan

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey installs a new waterproof shower floor.

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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.

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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.

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.

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.