Air conditioning service headquarters is the first site a homeowner should visit if their air conditioner isn’t working. They offer checklists that homeowners of any skill level can follow. They’ll help you troubleshoot your AC problem with plenty of useful info but also offer printable PDF checklists, which are very convenient as you walk around the home. Troubleshooting your air conditioning problem is a great way to familiarize yourself with your AC unit in case you have to call for service. After using their checklists you will feel more confident if you have to call an air conditioning repairman. If you are looking to replace an older AC unit with a newer more energy efficient system, or you are trying to decide on the right system for a new home this website is full of easy to understand information to help you make an educated decision. This website is not run by an air conditioning company who put their own interests first, It was started by a homeowner to help other home owners.