For all your AC installation needs in Maryland Heights, MO, Jerry Kelly Heating & Air Conditioning is here to help. Air conditioning is essential in our local area due to the hot, humid summers. If you want to keep your home cool and comfortable throughout the season, you’ll need to ensure your air conditioner is up to the task. If your system has seen better days, it may be time for AC replacement. Read on to learn more about residential AC installation and replacement services and how to tell when it is time for a new system.