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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

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.

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.

S20 E12, Richard Trethewey replaces a tub drain
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How to Replace a Tub Drain

In this edition of DIY Smarts, plumbing and heating expert Richard Trethewey helps a homeowner with an old 1950s bathtub replace the tub drain assembly when the current one stops plugging the tub.

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 Replace a Tank Water Heater

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner replace a tank water heater

Hot water heating system
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How to Install an Air Valve for a Hot Water Heating System

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey prevents trapped air from stopping a heating system cold in its tracks.

Diagnosing problems with hot water heating system
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How to Diagnose Problems with a Hot Water Heating System

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner figure out why one of her radiators is not working.

Creating zones in hot water heating system
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How to Create Zones in a Hot Water Heating System

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows how to share the warmth by installing zone valves.

Toilet with a nearby plunger
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How to Unclog a Toilet

A clogged toilet is one of the most common and stressful problems people have to deal with in their homes. If not cleared swiftly and properly, it can become a big mess, possibly spilling onto the bathroom floor and leaking through to the rooms below. In this video, This Old House plumbing and heating contractor Richard Trethewey explains how to unclog a toilet.

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How to Install a Tankless Water Heater

Ask This Old House plumbing and heating expert Richard Trethewey heads to Milwaukee to install an instantaneous water heater.

Diagnosing leak in steam boiler
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How to Diagnose Leaks in a Steam Boiler

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

Richard Trethewey installs a new waterproof shower floor
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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 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 Install a Water Filter Under the Sink

Ask This Old House plumbing and heating expert Richard Trethewey travels to Los Angeles to update a water filter to preserve the look of a retro faucet

All About Heat Pump Water Heaters

Save big bucks while taking advantage of the existing heat in your home. Here’s what you need to know about heat pump water heaters.

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.

S20 E25, Richard Trethewey fixes a wobbly toilet and a stuck faucet handle
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Common Plumbing Issues: How to Fix a Wobbly Toilet and Stuck Faucet Handle

This Old House plumbing and heating expert Richard Trethewey helps a homeowner handle two very common plumbing issues.

S2 E12, Richard Trethewey in a bathtub
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How to Repair a Shower Valve in a Tile Wall

This Old House plumbing and heating expert Richard Trethewey and tile expert Joe Ferrante team up to repair a leaky shower valve installation

S5 E14, Richard Trethewey shows how to unclog various drains
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How to Clear a Clogged Drain

In this how-to video, This Old House shows various ways to clear household clogs

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How to Add a Heat Pump to a Water Heater

This Old House plumbing and heating expert Richard Trethewey makes heating water more efficient by installing a heat pump

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How to Repair a Sewer Pipe Under a Concrete Slab

This Old House plumbing and heating expert Richard Trethewey shows how to rescue a buried, root-clogged pipe, without digging up the whole site

House Hydrant
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How to Install a House Hydrant

Ask This Old House plumbing and heating expert Richard Trethewey installs a house hydrant to replace a leaky outdoor spigot.

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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 Clear a Clogged Bathtub Drain

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

How to Bleed a Radiator

If you have hot-water heat, have you ever found that one or more of your radiators isn’t warming up? Or that only the bottom of a radiator gets hot? Before you spend the money on a plumber, try an easy fix.

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

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.

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

The Complete Hot Water Heater Buying Guide

Water heaters are easy to ignore—until they stop working. From size, types, cost, and maintenance read this step-by-step guide to buying a water heater if you're looking to replace yours.

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Common Water Heater Myths Answered

Ask This Old House plumbing and heating expert Richard Trethewey shares some tips on maintaining water heaters.

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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.