Heating and Cooling

Heating and cooling ultimately determines the comfort of a home. Learn how to troubleshoot heating and cooling and how to fix and maintain HVAC systems.

Keep your AC fan in good shape by making sure it’s dirt-free. Learn about replacing the fan motor in a window AC unit in this article.

You can install acoustic ventilation in your home for under $3,000, including the cost of materials. Learn about applying acoustic ventilation in your home in this article.

How Icynene Works

Structural loss of heating and air conditioning can be a major expense for any home or business. Learn about an insulation material called Icynene, and see how it compares to traditional insulation methods.

How Swamp Coolers Work

If your air conditioner is causing your energy bills to rise, you might want to consider an alternative -- swamp coolers. What's the principle behind swamp coolers, and what do they have to do with Benjamin Franklin?

How Fireplaces Work

With all of the parts involved, fireplaces can lose more heat than they provide. However, there are tools, tricks and green options so you can enjoy the look and warmth of a traditional fireplace.

If my home's air filters are clean when I change them, are they really working?

It's an often heard maxim: Clean air filters save energy and money. They're designed to catch pollutants as the air passes through them. But if it's clean when you pull it out, is it really doing its job?

How Heat Pumps Work

Heat pumps use a small amount of energy to move heat from one place to another. They serve a dual purpose -- they can use that heat transfer to cool a home as well.

How Off-peak Cooling Systems Work

Off-peak cooling is a new innovation that uses electricity to produce blocks of ice at night when demand is low. But how does the air stay cool enough to provide relief at the hottest time of day?

How Exterior Insulation and Finish Systems Work

If you haven't heard of exterior insulation before, chances are you've seen it without knowing it. But what makes it different from interior insulation (besides where it's located)? And what does it have to do with post-World War II Germany?

What can I do to my roof to save on energy costs?

It may seem like one of the more boring aspects of home maintenance, but putting a good roof on your home can save you loads of money down the road. What's the best way to save on energy costs?