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Clogged Backflow Preventer

Richard diagnoses a puddle of water near a boiler

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How to Replace a Pedestal Sink Pop-Up Assembly

This Old House plumbing and heating contractor Richard Trethewey replaces an old, faulty pop-up drain

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How to Replace a Direct-Vent Water Heater

This Old House plumbing and heating expert Richard Trethewey shows how to install a new water heater when there's no chimney

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How to Install a Drain Pump for a Basement Sink

Draining water from below-grade plumbing with This Old House plumbing and heating expert Richard Trethewey

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How to Install a Frost-Proof Faucet with PEX Piping

This Old House plumbing and heating expert Richard Trethewey shows how to plumb a new hose faucet using flexible plastic water pipe

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How to Install an Automatic Washing Machine Shutoff Valve

Adding overflow protection to the laundry room with This Old House plumbing and heating expert Richard Trethewey

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How to Install a Water Pressure Reducing Valve

Taming extremely high water pressure with This Old House plumbing and heating expert Richard Trethewey

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How to Install a Pull-Out Kitchen Faucet

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

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How to Install a Water Softener

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

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How to Choose Water Supply Piping

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

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How to Replace a Smelly Dishwasher Drain Hose

This Old House plumbing and heating expert Richard Trethewey comes up smelling sweet by installing a new discharge hose

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How to Clear a Clogged Plumbing Vent

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

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How to Replace a Whole-House Plumbing Trap

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

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How to Connect a Refrigerator Water and Ice Dispenser

Tapping into a water-supply line with This Old House plumbing and heating expert Richard Trethewey

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How to Install a Dehumidifier Pump

This Old House plumbing and heating expert Richard Trethewey shows how to replace a faulty pump

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How to Maintain an Electric Water Heater

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

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How to Quiet Pipes With a Water Hammer Arrestor

Silencing noisy pipes with This Old House plumbing and heating expert Richard Trethewey

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How to Install a Flood Control System

Keeping sewage at bay with This Old House host Kevin O'Connor and plumbing contractor Dennis Langowski.

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How to Use a Membrane System to Prep a Shower for Tiling

This Old House general contractor Tom Silva shows a foolproof way to build a leak-free shower

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How to Fix a Noisy Faucet

This Old House plumbing and heating expert Richard Trethewey quiets a tap that's making a hammering sound

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How to Replace a Shower Mixing Valve

Fixing a faulty valve with This Old House plumbing and heating expert Richard Trethewey

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How to Replace a Faucet Aerator

This Old House plumbing and heating expert Richard Trethewey has a quick fix for a slow-flowing faucet

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How to Install a Water Filter With A Separate Faucet

This Old House plumbing and heating expert Richard Trethewey delivers clean, filtered water right at the kitchen sink

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How to Prevent Household Plumbing Leaks

Looking for water damage points with This Old House host Kevin O'Connor and damage prevention specialist Michael Milligan

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How to Install a Dry Well and Divert Rain Run-Off

Controlling rain run-off with This Old House landscape contractor Roger Cook

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How to Repair a Clogged Kitchen Sink Hose

Fixing a faulty sprayer hose with This Old House plumbing and heating expert Richard Trethewey

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How to Test for Hard Water and Add Softeners

Cleaning up drinking-water problems with This Old House plumbing and heating expert Richard Trethewey

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How to Install a Solar-Powered Water Heater

Harnessing the sun's power with This Old House plumbing and heating expert Richard Trethewey and plumbing and heating contractor Bob Dudley

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How to Add a New Dishwasher to a Kitchen

Hooking up a new appliance with This Old House plumbing and heating expert Richard Trethewey.

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How to Install the Plumbing for a Kitchen Sink

This Old House plumbing and heating expert Richard Trethewey shows how to install kitchen sink plumbing for a double-bowl sink.

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How to Use Graywater in Toilet Tanks

This Old House plumbing and heating expert Richard Trethewey discusses the benefits of a combination toilet/sink fixture

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How to Install a Hot Water Recirculation Pump

This Old House plumbing and heating expert Richard Trethewey delivers hot water on demand