Seal It Tight! Save a Bundle on Home Heating Costs

Reader Contribution by Staff
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If heating and cooling costs of your home now rival your mortgage costs, the most important thing you should do is to seal up the building. Most existing homes are like Swiss cheese. If you could add up all the tiny leaks in the building envelope – the walls, foundation, and roof – they’d be equivalent to a 3-foot wide by 3-foot high window left open 24 hours a day, 365 days a year.

Sealing those leaks can dramatically reduce energy costs, saving you a fortune and making your home much more comfortable. You could easily cut your annual heating and cooling costs by 10 to 30 percent, perhaps more. It all depends on how leaky your home is.

Sealing the leaks in the building envelope is inexpensive and highly effective. It offers one of the best returns on investment you will get on an energy upgrade.

To locate leaks, you can hire a professional home energy auditor. He or she will perform a blower door test, which will tell you how leaky the house is. It will also identify leaks, which then can be sealed with caulk or weather stripping. A home energy audit could run from $300 to $500, depending on the size of your home.

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