Automatic pool covers use a key-switch system where you can open and close your cover with the touch of a button.
Pool covers can help you with many things, including child safety, heat retention, energy savings, and pool maintenance. Manual pool cover systems are opened and closed manually, either through a roller-system or by pulling the cover off yourself.
Spa covers keep debris out of your spa and keep heat loss to a minimum.
Well-maintained pool cover systems typically need to have the cover and possibly some parts replaced every 5-7 years.
Odd sounds or a change in your cover's movement could indicate that your cover or the mechanism needs to be repaired. Aquagard repairs all makes, models, and brands of pool covers and would be happy to diagnose the problem.