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New heat pump with 5/16" liquid line?
Does anyone know of manufacturer that has ratings for their heat pump to be used with a 5/16" liquid line? We have a replacement job, that has an existing 25' silv flos'ed liquid line that we would like to re use. I know most manufacturers now are calling for 3/8", But if possible we would like to re use this line and save the customer the extra charge in having it replaced. Thanks to all. '