Heating & Cooling How To & DIY
Improve the value of your home by discovering our heating & cooling step-by-step tips & ideas.
Window air conditioning units may seem intimidating, but they’re actually quite easy to install. With a bit of background knowledge, the right tools, and a guide to show the way, cooler temperatures are on the horizon—even when it’s boiling outside.
Improve the air quality and keep your home energy efficient by sealing your ducts.
If you have hot-water heat, have you ever found that one or more of your radiators isn’t warming up? Or that only the bottom of a radiator gets hot? Before you spend the money on a plumber, try an easy fix.
Ask This Old House plumbing and heating expert Richard Trethewey travels to Akron, Ohio to install a garage heater.
Stay cool and save money with five simple tasks–most done just once a year–that ensure your unit keeps working efficiently.
This Old House plumbing and heating expert Richard Trethewey shows how to prevent ice buildup from shutting down an air-conditioning system
Air conditioning is nice to have, but the look of the clunky unit outdoors can be unsightly. Watch as Jenn Largesse, DIY Expert and House One Editor, creates a wooden cover for her air conditioning unit.
Richard Trethewey demonstrates heat loss and gain to design a balanced HVAC system.
This Old House general contractor Tom Silva shares tips for fixing a drafty door
Ask This Old House plumbing expert Richard Trethewey learns about an HVAC system that allows each room to be zoned out using smartphone technology.
Ask This Old House plumbing and heating expert Richard Trethewey replaces a small radiator with one that’s the correct size
This Old House plumbing and heating expert Richard Trethewey explains how adjusting the thermostat can reduce energy consumption and save you money
Plumbing and heating expert, Richard Trethewey explains the purpose of a mini split ductless air conditioner and the process of getting one installed.
This Old House plumbing and heating contractor Richard Trethewey silences a rattling radiator
Learn about features, installation, and the difference between traditional and smart thermostats.
We rounded up our favorite ideas to help you update your fireplace for a more modern look.
We show you how to add a manageable control to your old radiator by installing a new thermostatic valve.
This Old House plumbing and heating expert Richard Trethewey shows how to silence noisy heating pipes.
Add controls to a steam radiator with these step by step instructions and video to guide you.
Tom Silva shows you how to keep cold air from coming through windows and doors.
Is your ceiling fan wobbly and rattling? This guide will show how to easily and safely balance and level your ceiling fan blades.
This Old House plumbing and heating expert Richard Trethewey explains how the pros retrofit a compact cooling unit.
Want to install central AC to your home? Read this guide to learn more about central air installation, from installation costs to selecting the best unit.
Ask This Old House plumbing and heating expert Richard Trethewey replaces an old thermostat with a smart thermostat without replacing the original two wires in the wall.
This Old House plumbing and heating expert Richard Trethewey and host Kevin O'Connor install a ductless heat pump to heat and cool a room
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 discusses the possible causes and solutions for a frozen air conditioner.
Ask This Old House master electrician Scott Caron warms up a chilly bathroom by installing an electric convection heater