Trees that lose their leaves in the fall (i.e., deciduous) are the most effective at reducing heating and cooling energy costs. When selectively placed around a house, they provide excellent protection from the summer sun but permit winter sunlight to reach and warm your house. The height, growth rate, branch spread, and shape are all factors to consider in choosing a tree.
Install a low-flow shower head with a maximum flow rate of 2.5 gallons per minute or less. You’ll cut your bathroom water use by 30 to 50 percent, and you’ll conserve the energy required to heat the “extra” water.