Heating & Cooling Videos

Plumbing and heating expert Richard Trethewey diagnoses and solves a homeowner’s lack of hot water.

Richard Trethewey demonstrates heat loss and gain to design a balanced HVAC system.

Weatherstripping a wood door is a valuable DIY project that can improve your home's energy efficiency and comfort. Learn how to do it in our step-by-step guide.

Home technology expert Ross Trethewey helps a homeowner solve an ice dam issue with smart insulation practices that also improve the home’s efficiency.

Plumbing and heating expert Richard Trethewey teaches host Kevin O’Connor about furnaces and why it’s important to maintain them properly.

In this DIY Smarts segment, plumbing and heating expert Richard Trethewey helps a homeowner replace their old tank water heater before it fails.

Plumbing and heating expert Richard Trethewey gives host Kevin O’Connor an inside look at why a water heater fails and when to replace one.

Home technology expert Ross Trethewey explains everything there is to know about modern smart thermostats.

Watch as This Old House plumbing and heating expert Richard Trethewey and home technology expert Ross Trethewey teach some cost-effective ways to save money on heating this winter.

Ask This Old House home technology expert Ross Tretheway explains everything you need to know about heat pumps.

Plumbing and heating expert Richard Trethewey walks us through the pros and cons of different types of water heaters.

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner by moving a hot water baseboard heater from one side of a room to another.

Watch as Richard Trethewey and John Deforge of SG Harold Plumbing and Heating discuss the challenges that service technicians face on the job.

Our plumbing and heating expert Richard Trethewey explains the general layout of the heating and cooling system in our Cape Ann project

Ask This Old House plumbing and heating expert Richard Trethewey travels to Orlando to diagnose and repair an HVAC system that is creating way too much humidity

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

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

Ask This Old House plumbing and heating expert Richard Trethewey shows how to change the temperature on your water heater for safety and energy savings

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

Ask This Old House plumbing and heating expert Richard Trethewey travels to Akron, Ohio to install a garage heater.

This Old House plumbing and heating expert Richard Trethewey helps a homeowner select and install the right electric water heater.

Ask This Old House plumbing and heating expert Richard Trethewey walks host Kevin O’Connor through the choices in air conditioners.

Ask This Old House plumbing and heating expert Richard Trethewey shows a style of ductless heat pump that can be used to heat and cool an entire house

Ask This Old House plumbing and heating expert Richard Trethewey shares tips for keeping an air conditioner running efficiently

Richard Trethewey explains how an Energy Recovery Ventilator (ERV) replaces conditioned indoor air with fresh outdoor air without wasting energy

Considering steam heat? We help you weigh the pros and cons so you can decide if it is right for you.

Richard Trethewey explains how to assess a home’s heating system – and figure out whether you’ll need to replace it

Ask This Old House plumbing and heating expert Richard Trethewey replaces a small radiator with one that’s the correct size

Ask This Old House master electrician Scott Caron warms up a chilly bathroom by installing an electric convection heater.

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

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

Over the years, This Old House plumbing and heating expert Richard Trethewey has helped hundreds of homeowners reduce their energy consumption and slash their monthly utility bills