What is a windbreak?

A windbreak is a row or group of trees, shrubs, or structural elements (e.g. fences) that are used to block and direct the wind. Vegetative windbreaks are used in agriculture to prevent wind erosion or damage to field crops. For homeowners, windbreaks can be used to block harsh winter winds around housing. By planting windbreaks, homeowners can realize a savings in heating bills. The U.S. Department of Energy has more information about Landscape Windbreaks for your home.

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Do I need to insulate and weatherstrip the attic access door?

Yes, if the attic access door is within the living space and can open directly into the attic. Whether in a hot or cold climate, the access door should be treated just like an outside entrance door; it must be insulated and weatherstripped.

During cold and windy weather, heat loss and air leakage through uninsulated and non-weatherstripped ceiling openings is a major source of energy loss (resulting in higher heating costs). During the heat and humidity of the summer, where …

What is return air? Why does the furnace need it?

Return air is related to forced air type home heating systems. The return air in these systems is circulated from the furnace (heating supply air) in ducts, to individual rooms. In the rooms (except for bathrooms and kitchens), there should be a return duct for the “return air.” This is air that completes the circulation and returns cool air back to the furnace in return ducts. Return ducts are typically under negative pressure, so should be sealed so as not …