Posted By engineer on 26 Oct 2013 11:07 PM
The added cost and other disadvantages of placing a geo split compressor unit outdoors just to take advantage of existing electrical circuit may outweigh the cost of moving the service to the garage.
We routinely reuse copper line sets when converting from R-22 to 410a. We use a very pricey flush solvent to drive out the old oil, but it still saves the typical customer $500 or so in material and labor changing out the line set. We tell them we might have to replace, if the old lines fail pressure and vacuum tests.
I think these are excellent observations that essentially being able to reuse the existing electrical and copper circuits in most cases will probably outweigh the cost of new circuits to the garage.
I didn't know there's at least one product on the market that indeed is very effective at getting out R22 oil from a copper circuit. Thanks!
Best regards,
Bill