Install window film, solar screens, blinds or awning on the south and west facing windows to help reduce heat gain. Install an air conditioning economizer to bring in outside air when it's cool. Insulate water heaters and supply pipes. If possible, install ceiling and wall insulation. You will save money on your monthly utility bills and your employees will be more comfortable.
Incentives are available.
Check out the Energy Advisor for detailed information of other HVAC options. Task Many offices, stores or factories can easily reduce lighting without affecting productivity. Turn off as many unnecessary lights as possible. Use task lighting instead of overhead lighting, and light only those areas that are needed at the time. Providing the right lighting can save up to 15 percent on your lighting bill.