Heating & Cooling How To & DIY

Leaky air ducts waste energy, costing you money. Learn how to identify and fix an air duct leak in our comprehensive guide.

Are your vents whistling? It could be due to increased pressure. Learn how to install a forced-air bypass damper with this guide and video.

This Old House plumbing and heating contractor Richard Trethewey demonstrates how to silence a rattling radiator.

This Old House plumbing and heating contractor Richard Trethewey reveals a quick, easy way to replace a damaged baseboard heater.

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

This Old House general contractor Tom Silva shows how to run radiant heat tubing under a new hardwood floor

This Old House plumbing and heating expert Richard Trethewey shares tips for installing new radiant-heat tubing on top of an old subfloor when there's no access from below

When doing an energy audit in preparation for weatherizing a home, you have to seal cracks and openings in the building before you turn on the fan

This Old House general contractor Tom Silva installs a whole house fan to keep a homeowner's house cool without central air conditioning.

In this video and guide, This Old House plumbing and heating contractor Richard Trethewey explains the basics of electric radiant heat.

This Old House general contractor Tom Silva shows a quick and clever way to keep a home cool by installing a whole house fan.

This Old House plumbing and heating expert, Richard Trethewey, demonstrates how to silence noisy heating pipes and quiet your house down.

This Old House expert Richard Tretheway shows you how to install a thermostatic radiator valve step by step in this video.

Learn how to use silicone weatherstripping to fill gaps in your door

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey offers a quick and easy way to cool off a room.

Air that gets trapped in your hot water heating system can leave homeowners in the cold. Learn how to install an air valve for a hot water heating system in our step-by-step guide.

Installing a programmable thermostat? Watch our how-to video with This Old House plumbing and heating contractor Richard Trethewey showing how to install an automatic, fully programmable thermostat

Dress up an ugly radiator with a custom-made MDF cover as shown by This Old House general contractor Tom Silva.

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey demonstrates how to add a humidifier to a forced-air system.

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows how to quiet a loud heating duct.

Watch as This Old House plumbing and heating contractor Richard Trethewey explains the warming attributes of electric radiant heat.

Zoning can improve comfort levels and energy efficiency. Discover how to create zones in a hot water heating system in this guide and video.

This Old House plumbing and heating contractor Richard Trethewey follows a painting expert as he revitalizes an old radiator.

In this guide, we show you how to remove your baseboard heater covers and replace it with a new one for a fresh, clean look.

In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows how to silence a whistling radiator.

Add controls to a steam radiator with these step by step instructions and video to guide you.

In this how-to video, This Old House plumbing and heating expert Richard Trethewey demonstrates how to install a mini-split air conditioner.