I have a new Central A/C system (replaced in last 6 months), but the line set (i.e. the coolant pipes connecting the system) are very old (at least 20 years, but likely more).
It works (as far as I know), but there are three problems.
First the easiest and quickest route between two points is a straight line. This philosophy was obviously not believed by the original installers (there are at least 7 right angles).
Second, aesthetically speaking, the piping in the room of the home is unsightly. The condenser is at the side of the house, but the piping exits the rear of the home, snaking around windows and doors until is climbs around the corner to the side of the house.
Third, at some point in the next two years I will need to replace the siding and therefore this line set will need to be removed temporarily. I believe there is a change over to a new type of freon; I did not want to get caught having to make a major upgrade as we result.
So, I would like to know how much of this can I do myself? Can I run a new A/C line set on my own? I understand I will not be able to charge it, but I was hoping to reduce the total cost of the replacement (quoted at $1K) if I did most of the work myself.