Hi, I have just moved into a new home and am now 'learning' my systems. Funny how when you buy a car you get a 'phone-book' sized instruction manual but when you buy a home you get the keys and nothing more, LOL....
Anyway, I noticed on my Carrier 5-ton Heat-pump/AC condenser unit outside that I have an external Drier on the liquid line. I can see (looking through the fan from the top that there's a drier still installed internally?
Why would a tech not remove the internal Drier if he intended to add one externally? Is this common practice?