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Solar panels on a craftsman home
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Understanding Solar Power

Thinking about installing solar panels on your house? Watch as This Old House plumbing and heating expert Richard Trethewey explains the complexities of modern solar-power systems.

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How to Install Room-By-Room Zoning in an HVAC System

Ask This Old House plumbing expert Richard Trethewey learns about an HVAC system that allows each room to be zoned out using smartphone technology.

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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

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

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.

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

S2 E23, Richard Trethewey explains radiant-heat flooring
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How to Install Radiant Heat

This Old House plumbing and heating expert Richard Trethewey shows how to retrofit an old home with new under-floor heat

S5 E26, Richard Trethewey fixes a noisy forced-air heating system
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How to Quiet a Noisy Forced-Air System

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey makes peace with a raucous heating duct

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.