Heating & Cooling
What to Do If Your Fridge Stops Cooling
Is your refrigerator no longer staying cool? There are a number of reasons why your fridge may be quitting on you. Read our guide to help diagnose and fix your fridge.
How To Build a Stylish Outdoor Air Conditioner Cover
Read our step-by-step guide on how to build an outdoor AC cover that conceals and protects your unit.
Rheem Water Heater Warranty Review
When you purchase a water heater, a Rheem water heater warranty may be enough coverage to protect the item when it’s new. However, factory warranties carry expiration dates, so once this protection period ends, you’re left to face the costs. A home warranty can protect your budget and give you peace of mind by covering appliances and systems regardless of their age.
How to Upgrade to a Smart Thermostat with Four Wires | This Old House: Live
Watch as This Old House home technology expert Ross Trethewey installs a new smart thermostat without an existing common wire.
A Guide to the Best Water Heater Warranty
When your water heater breaks down from normal wear and tear, your daily routine may be impacted significantly, as this system is responsible for heating the water you use when showering, doing laundry, and washing dishes. Keep reading this review to find the best water heater warranty for your home.
Too Much Dust
Why is the house so dusty even when the air filters are clean?
How to Quiet Noisy Ducts
Is there a way to stop the banging from your metal ductwork? Richard Trethewey diagnoses the problem and points to some solutions
Serviceable Plumbing and HVAC Installations
Watch as Richard Trethewey and John Deforge of SG Harold Plumbing and Heating discuss the challenges that service technicians face on the job.
Home Heating Guide For Beginners
Heating is the most basic requirement of a house. Learn about the various types of home heating systems and how to maintain them.
Basic Types of Home Air Conditioning Systems
Learn the basics of the most common AC systems and how to maintain them with this guide on all the different AC systems.
Everything You Need to Know About Plumbing
From when to call a plumber to saving on your water bill, and more, we cover all you need to know about your home's plumbing.
How to Remove Air Pollution in the Home
While a tight, well-insulated home is great for saving energy, trapping lots of stale air indoors can undermine your health. Here’s what you need to know to ensure that the quality of the air inside is healthy and free from harmful pollutants.
How to Upgrade to a Smart Thermostat without Changing the Wiring
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.
7 Tips for an Energy-Efficient Home
Want to improve your energy bill and run your home efficiently year-round? Read on.
Why a Heat Pump Clothes Dryer Might Be Right for Your Home
This Old House plumbing and HVAC expert Richard Trethewey explains the energy and cost-efficient benefits of a heat pump dryer.
How to Buy an HVAC System for Any Kind of Home
Consider design, comfort, and greater energy efficiency when installing a new HVAC system
All About Heating & Cooling
No matter how unpleasantly hot or cold it is outside, we can stay comfortable indoors because of heating and cooling equipment. The varied technology we have today for mechanically heating and cooling indoor spaces is truly amazing.
How To Seal Leaky Ductwork
This Old House expert Richard Trethewey shows how to improve your home's air quality and efficiency by sealing your ducts.
How Do Smart Thermostats Work? A Complete Guide
Learn about smart thermostats, including features, cost, installation, and the difference from traditional home thermostats.
Heat Pump vs. Furnace: Understanding the Differences
Our guide covers what to consider when choosing between a heat pump and furnace, such as heating needs, cost, and climate.
How a Heat Pump Clothes Dryer Works
Ask This Old House plumbing and HVAC expert Richard Trethewey tests out a new dryer in our DIY Smarts series that uses a heat pump to dry the clothes.
Cape Ann Project Heating Plan
Our plumbing and heating expert Richard Trethewey explains the general layout of the heating and cooling system in our Cape Ann project
Heat Pump Advances
These days, everyone is doing their best to conserve energy. Richard Trethewey’s best advice: don’t create heat, move it! Heat pumps are a great option for keeping everyone in your house warm without breaking the bank.
How to Diagnose and Repair a Humid Air Conditioner
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
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 Install a GPS-Enabled Smart Thermostat
Ask This Old House plumbing and heating contractor Richard Trethewey installs a thermostat that can be programmed automatically from a smart phone
How To Adjust Water Heater Temperature
Ask This Old House expert Richard Trethewey shows how to change the temperature on your water heater for safety and energy savings.
Staying Safe with Natural Gas
Ask This Old House plumbing and heating expert Richard Trethewey and host Kevin O’Connor discuss how gas regulators work and how their malfunction caused gas explosions in Lawrence, MA
How To Fix a Noisy Baseboard Heater
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 Heat a Garage Workshop
Ask This Old House plumbing and heating expert Richard Trethewey travels to Akron, Ohio to install a garage heater.
Tankless Water Heaters: What You Need to Know Before You Buy
Tankless water heaters warm water on demand, so you never run out of hot water. They’re also energy efficient, which saves you money on utility bills.
How To Install an Electric Heat Pump Water Heater
This Old House plumbing and heating expert Richard Trethewey helps a homeowner select and install the right electric water heater.