We all know that shade trees make a difference when it comes to keeping cool in the summertime. But did you know that planting trees can also boost HVAC savings on your energy bill? Read on for how the trees you plant today can earn their keep by saving on your HVAC energy bill in the future.
Keeping Cool With Trees
Shade trees keep the temperature down in your home in two ways. They block solar radiation from entering the home, sure, but they also cool the air around them through a process called transpiration. The trees pull water through the roots, which changes from a liquid to vapor as it is released through the leaves. As the vapor enters the air, a cooling effect takes place. A dense planting of shade trees can cool the air around them by as much as 6 degrees.
Where to Plant Trees
Think carefully about where you want to plant trees. Shorter shade trees work well on the eastern and western sides of the home, since that's where the sun will shine closest to the horizon. Taller trees on the south face of the home offer midday cover and can keep the walls and roof cool.Don't plant trees too close to the home -- 10 to 20 feet away from exterior walls is recommended. Planting trees too close can cause foundation problems. You may also have to do extensive trimming to keep limbs from damaging the roof during storms.
Choosing Trees
If you aren't particularly tree savvy, talk to a nursery professional before you choose trees based on looks alone. Avoid trees that are too fast growing, as these species may be subject to disease or breakage before they grow big enough to shade your home. Ask about maximum height, growth habit and the tree's ability to flourish in the microclimate that your home will provide. Don't choose trees that shed fibers or seeds that might clog your outdoor condenser unit.
We've got more tips on HVAC savings at Air Assurance of Broken Arrow.
Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems). For more information about other HVAC topics, call us at 918-217-8273.