Air Leaks Air leaks in your home can be costly problems if you have air-conditioning, especially in humid climates like Iowa. Ducts One of the fastest ways to save energy and money if you have central air conditioning, is to seal any leaks in the duct work. More information on ducts can be found on page 10. Trees Trees and landscaping are the most effective measures for blocking solar heat. In fact, the temperatures directly under trees can be up to 25 F cooler than air temperatures around nearby blacktop.
Trees also are a good investment.
Additionally, the more shade you have, the more effectively you can use natural ventilation. Shade makes the air around the house cooler and it prevents solar heat from building up indoors. Trees should be planted on the southeast and west sides of your house for the maximum shading effect. Not only will they help lower your energy costs over the years, but they ll make your home a greener and more beautiful place to live. The screen must be installed on the exterior of a window to be effective.