Here's the quote that came shortly after the call. Did he make a mistake quoting 10-12k over the phone? He says it is a Bosch system. He says that the Pioneer mini split I bought from Home Depot is a "junk" system. They are very well rated on homedepot.com

BMS500-AAM048-1CSXRA Your Price $8,411.00 Ductless Mini Split. No ductwork required, which means no messy renovation! Ideal for individual rooms with inadequate heating or cooling, additions, enclosed patios, homes without space for ductwork, or an entire home! The AAU models paired with AAM models function at 18-48kBTU/h View Less BMS500-AAU009-1AHWXB Your Price $1,290.00 Ductless Mini Split. No ductwork required, which means no messy renovation! Ideal for individual rooms with inadequate heating or… View More BMS500-AAU009-1AHWXB Your Price $1,290.00 Ductless Mini Split. No ductwork required, which means no messy renovation! Ideal for individual rooms with inadequate heating or… View More BMS500-AAU009-1AHWXB Your Price $1,290.00 Ductless Mini Split. No ductwork required, which means no messy renovation! Ideal for individual rooms with inadequate heating or… View More BMS500-AAU012-1AHWXB Your Price $1,529.00 Ductless Mini Split. No ductwork required, which means no messy renovation! Ideal for individual rooms with inadequate heating or… View More Minisplit Outdoor and 1 Head Your Price $4,540.00 Furnish and install new minisplit indoor and outdoor unit set on composite pad. Run new insulated lineset from indoor unit to… View More Minisplit Indoor Unit Add-Per(Qty: 3) Your Price $6,462.00 Furnish and install new minisplit indoor unit. Run new insulated lineset from indoor unit to outdoor unit. Leak test and evacuate… View More Approved Discount Your Price -$1,240.60 Discount for Installation Approved Discount Your Price -$1,240.60 Discount for Installation Approved Discount Your Price -$1,240.60 Discount for Installation Subtotal $21,090.20 Tax $0.00 Total $21,090.20