Larger line for oil return??

Which crack jack box did you pull that one from??

"Moe Jones" wrote in message ...
Check with your local HVAC contractor. In allot of cases when you go with a change of using a different refrigerant, most newer units have stepped up the size of the suction line from lets say a 7/8" to 1 1/8" line for proper oil return.

Plus the newer units use a different refrigerant oil so you do not want any of the older oil to mix with the new oil. You can flush out the old oil but it does cost allot of money to do so,

--
Moe Jones
HVAC Service Technician
Energy Equalizers Inc.
Houston, Texas
www.EnergyEqualizers.com
"GaryMichael" wrote in message ups.com...
I've gotten conflicting advice on whether or not to replace the line
between inside and outside unit. Some say the current line with R22
can be purged and then used with 410. Others say no, can't be
thoroughly cleaned and will cause problems down the road. Unit is a
heat pump, if that matters. Any thoughts?