alt.home.repair wrote:
One more thing I forgot to ask......is it important that I consider
the new "sufron" type units, or stick with the Frion type units of
past? Carrier guy said the Sufron units are better, but more $

If it was a Carrier guy he probably said "Puron", not "Sufron". Puron
is Carrier's trade name for R410a refrigerant. Freon is Dupont's trade
name for R22 refrigerant. Either one will work OK, R22 has been around
the longest but is being phased out because of EPA restrictions on
chlorine-based refrigerants.

Personally, I'd stick with R22 for now due to it's lower operating
pressures and longer track record.