In my area, that is the worst advice you can give anyone. Those are "specials" many companies around here use to get their foot in the door.
Originally Posted by catmanacman
The OP should find a contractor they trust who charges a fair price for the maintenance involved. The guys that come out for peanuts HAVE to find something else to bill for.
Give a man a fish, he will eat for a day. Teach a man to fish, he will eat for a lifetime.
Give a man a capacitor, doesn't know what to do. Teach a man to install it, now he knows everything.