Can line set exit the air handlers from either the back left or the back right side of the air handler?

Thank you for your question. According to the manual the refrigerant piping should exit the indoor air handler from the back on the right hand side of the unit. For more information pertaining to the installation of this system, please review the install manual. This manual can be found on the product page with the product specifications, under the resources section. For more assistance, please give us a call.