I am thinking of replacing all or part of 18 year old Lennox HVAC system located in 1800 sq. ft. townhouse (Rhode Island).
Or, just replace parts when they fail.
Or, just replace the Central AC unit.
Or, do nothing for now.
Trying to get educated on my system before problems occur (no problems yet, knock on wood).
Central AC Model HS18-261-8P
My questions are:
Does any one know how long the approximate life span is for each Lennox piece mentioned above?
Should I replace the whole system at once (whats the benifits of doing this)?
Is it OK to just replace the AC unit?
I think the main point is I am assuming the furnace will last longer than the outside Central AC unit. I think the Central AC unit has seen it's better days.
Any suggestion would be appreciated.