When doing renovations, include energy efficiency upgrades
The easiest and least expensive time to increase your energy efficiency is when you are already doing a project. You can create significant energy and financial savings, while providing good quality equipment and a comfortable work space.
If you are opening up walls, insulate them. If you are adding on, build a well insulated, well sealed addition. Can you design the space to use passive solar energy? If you are buying new equipment, buy ENERGY STAR® or WaterSense® qualified equipment.