Can a new puron condenser be hooked up to an existing 1/4 inch line
We are in a condo development built in 1970's, and are now facing the changeover from "freon" to puron a/c units. We have run into problems because our current units run through 1/4 inch lines into the condos. The new puron units "require" 3/8 inch lines (or so we have been told.) Our existing chases into the units will not accommodate the 3/8 inch lines so some of the new puron units are being connected to the existing 1/4 inch lines. They seem to be working, but we have heard that this may 1) invalidate the warranty, 2) reduce the efficiency below 13 seer, 3) cannot be done (even though it has been done), etc. What is the real story? What happens if this is done, vs. the problems it may cause down the road? Thanks for your help.