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Heating & Cooling
Find Deals on Winter Essentials This Black Friday
If you live somewhere that gets cold during the winter, these genius buys will help you stay safe and warm at home or on the road. Find the best Black Friday deals on winter essentials here.
How to Convert Radiators into Multi-Zone Heating
Upgrade an old radiator heating system with This Old House plumbing and heating expert Richard Trethewey.
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.
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.
Read This Before You Buy Ductless AC
These quick-to-retrofit ductless AC systems provide unrivaled operating efficiency and room-by-room zoning comfort.
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 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
This Old House plumbing and heating expert Richard Trethewey reveals how home automation delivers comfort, convenience and energy savings
How to Insulate a Crawl Space
To reap the temperature-regulating benefits of a crawl space, it must be adequately insulated. Read on to learn why you should insulate your crawl space and how to do so.
Types of Insulation for Your Home
Proper insulation is the best way to maximize comfort and minimize energy bills. Here are some common types for your home.
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
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.
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.
How to Get Your Furnace Ready for Winter
Your furnace may need some TLC before starting it up this winter. Here are some tips on what to do to get your furnace prepped before the cold months arrive.
10 Handy Air Conditioning Tips
Beat the heat by having the cleanest, coolest, and most-efficient air conditioner on the block.
How to Fix Knocking Baseboard Heat
This Old House plumbing and heating expert Richard Trethewey explains how to silence squeaky, creaky pipes.
How to Install DIY Radiant Floor Heating
Use a specialized foam panel to lock the PEX tubing in place, cover it with a sand-and-cement mix, and tile away.
How to Retrofit Air Conditioning Using Mini Ducts
In this video, This Old House plumbing and heating contractor Richard Trethewey explains the benefits of this felxible cooling system.
Portable Space Heaters 101
Portable space heaters can warm your bones in a hurry, but how economical — and safe — are they?
All About Building an HVAC
Keep reading to learn about the best HVAC technologies for indoor comfort and energy efficiency, according to This Old House plumbing and heating expert Richard Trethewey.
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 Zone a Forced Air Furnace and Air Conditioner
Ask This Old House plumbing and heating expert Richard Trethewey shows how to divide a home's heating and air-conditioning system into different zones.
How to Install an Exhaust Fan in a Wall
Scott Caron, master electrician for Ask This Old House, helps a homeowner put in an exhaust fan to rid her kitchen of smelly cooking odors.
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 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 Install a Whole House Humidifier
Ask This Old House plumbing and heating expert Richard Trethewey shows how a professional would install a whole-house humidifier.
How Thermostat Setbacks Save Money
This Old House plumbing and heating expert Richard Trethewey explains how adjusting the thermostat can reduce energy consumption and save you money.
What to Know Before Calling a HVAC Pro
Here’s what you need to know before hiring an HVAC contractor.
10 Easy Ways to Cool Your Home
Staying cool doesn't necessarily mean you have to pay a fortune to keep the air-conditioning running day and night. Here are 10 ways to keep your home cool in the warmer months.
How to Insulate HVAC Ductwork
This Old House plumbing and heating expert Richard Trethewey helps a homeowner insulate his HVAC ductwork.
The 5 Best Humidifiers (2022 Review)
Humidifiers add moisture to dry air. In this review, the This Old House Reviews Team researched the five best humidifiers on Amazon to help you find the product that’s right for you and your home. The products included in this article are available at various home improvement stores, local home centers, and online retailers like Amazon.
3 Reasons Water Heaters Fail
Plumbing and heating expert Richard Trethewey gives host Kevin O’Connor an inside look at why a water heater fails.