Heating & Cooling How To & DIY
Improve the value of your home by discovering our heating & cooling step-by-step tips & ideas.
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.
How to Repair Radiator Valve Threads
In this video, This Old House plumbing and heating contractor Richard Trethewey and host Kevin O'Connor shows how to cut threads for a new radiator air vent.
How to Manage Heat Gain and Loss Year Round
This Old House landscape contractor Roger Cook shares tips for saving energy throughout the year.
How to Fix Leaks in Air Ducts
This Old House host Kevin O'Connor and energy auditor Paul Scheckel find and fix leaky heating ducts
How to Install a Forced-Air Bypass Damper
This Old House plumbing and heating contractor Richard Trethewey quiets a whistling heating duct
How to Quiet a Banging Steam Radiator
This Old House plumbing and heating contractor Richard Trethewey silences a rattling radiator
How to Upgrade Your Baseboard Heater with Slip-On Covers
This Old House plumbing and heating contractor Richard Trethewey reveals a quick, easy way to replace a damaged baseboard heater.
17 Fireplace Remodel Ideas
We rounded up our favorite ideas to help you update your fireplace for a more modern look.
10 Ways to Beat the Heat
Staying cool this summer doesn't necessarily mean you have to pay a fortune to keep the air conditioning running day and night
How to Convert Radiators into Multi-Zone Heating
Upgrade an old radiator heating system with This Old House plumbing and heating expert Richard Trethewey.
How to Install Radiant Heat Under a Solid Wood Floor
This Old House general contractor Tom Silva shows how to run radiant heat tubing under a new hardwood floor
How to Retrofit Radiant Heat From Above
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
Preparing a Home for a Blower-Door Test
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
Installing a Whole House Fan
This Old House general contractor Tom Silva shows a quick and clever way to keep a home cool
Electric Radiant Heating
In this video, This Old House plumbing and heating contractor Richard Trethewey explains the basics of installing electric radiant heat
How to Install an Energy-Saving Programmable Thermostat
Save on your energy bill with controls that automatically change the temperature settings
How to Install a Whole House Fan
This Old House general contractor Tom Silva shows a quick and clever way to keep a home cool.
How to Quiet Heating Pipes
This Old House plumbing and heating expert Richard Trethewey shows how to silence noisy heating pipes.
How to Install Thermostatic Radiator Valves
We show you how to add a manageable control to your old radiator by installing a new thermostatic valve.
How to Seal a Door Gap
Learn how to use silicone weatherstripping to fill gaps in your door
Balancing a Ceiling Fan
Is your ceiling fan wobbly and rattling? This guide will show how to easily and safely balance and level your ceiling fan blades.
How to Install a Portable Air Conditioner
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.
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 Install a Programmable Thermostat
In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows how to install an automatic, fully programmable thermostat
How to Build a Radiator Cover
In this how-to video, dress up an ugly radiator with This Old House general contractor Tom Silva
How to Add a Humidifier to a Forced-Air System
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.
How to Fix a Noisy 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.
How to Install Electric Radiant Heating
In this how-to video, This Old House plumbing and heating contractor Richard Trethewey explains the warming attributes of electric radiant heat.
How to Position Mini-Duct Air Conditioning
In this how-to video, This Old House plumbing and heating contractor Richard Trethewey explains the benefits of this fit-anywhere cooling system
How to Create Zones in a Hot Water Heating System
In this how-to video, This Old House plumbing and heating contractor Richard Trethewey shows how to share the warmth by installing zone valves.
How to Paint a Cast Iron Radiator
In this how-to video, This Old House plumbing and heating contractor Richard Trethewey explains how to revive an old painted radiator.
Baseboard Heater Cover Removal and Replacement
Here’s how to remove your old baseboard heater covers and replace it with a new one for a fresh, clean look.