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On Dec 10, 5:54 pm, "The Henchman" wrote:
wrote in
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Going through the quote process for my new furnace and AC and came up
with two questions:

1 - Are new refrigerant lines required or recommended? The existing
system is 26 years old, still working
no burned out compressor, etc. One company says they have to be
replaced, other I didn't talk with
on that specific subject, but their quote calls out flushing and re-
using the existing ones.


Several years ago I had a heat pump system replaced as the old one was about
20 years old and was giving problems. I had everything but the duct work
and the power witing going from the main breaker box to the disconnects
replaced. That way if anything goes wrong the installers can not point
their fingers at anyone but theirselves. A few feet of line probably does
not cost all that much anyway. As someone pointed out, the lines may need
to be differant sizes. Especially when going from the old r-22 to the newer
refrigerant.