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Kevin O’Connor holding a wrench up to a radiator.
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How to Convert Radiators into Multi-Zone Heating

Upgrade an old radiator heating system with This Old House plumbing and heating expert Richard Trethewey.

Fixing baseboard heater
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Baseboard Heater Making Noise? Here’s How to Fix It

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner diagnose and solve a baseboard hot water system that makes noise.

S21 E7, Richard Trethewey replaces a tank-type water heater
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How to Replace a Tank-Type Water Heater

In this DIY Smarts segment, plumbing and heating expert Richard Trethewey helps a homeowner be proactive about their home maintenance by replacing their existing tank-type water heater before it fails.

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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.

How to Choose a Thermostat or Home Automation System
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How to Choose a Thermostat or Home Automation System

This Old House plumbing and heating expert Richard Trethewey reveals how home automation delivers comfort, convenience and energy savings

How to Maximize Comfort with a Thermostat
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How to Maximize Comfort with a Thermostat

Ask This Old House plumbing and heating expert Richard Trethewey and home technology expert Ross Trethewey discuss improvements to thermostats and how they contribute to comfort in a home

Diagnosing frosty air conditioner
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How to Diagnose a Frosty Air Conditioner

Ask This Old House plumbing and heating expert Richard Trethewey discusses the possible causes and solutions for a frozen air conditioner.

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.

Fixing knocking baseboard heat
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How to Fix Knocking Baseboard Heat

This Old House plumbing and heating expert Richard Trethewey explains how to silence squeaky, creaky pipes.