Suction Line size reduction on ductless unit.

[hepservice]

We're bidding to finish up a job started by another contractor. 1/4 x 1/2 lines are in the wall but owner wants a unit installed that calls for 1/4 x 3/8. Any experience on this? Feedback as to any consequences? We neck em on multi zone units but the line sets are correct so a concern about larger volume of 1/2" line. We've seen it servicing other "not our install" units too.

[gregp]

contact manufacturers tech service department and give them the model #'s of the equipment and total line length. That way you don't run the risk of voiding any warranties.

[MM#7]

We're bidding to finish up a job started by another contractor. 1/4 x 1/2 lines are in the wall but owner wants a unit installed that calls for 1/4 x 3/8. Any experience on this? Feedback as to any consequences? We neck em on multi zone units but the line sets are correct so a concern about larger volume of 1/2" line. We've seen it servicing other "not our install" units too.

listen to grep, when in doubt, call the mfg. it's callee C-Y-A,
THOSE MAY BE THE MOST important 3 letters in life!