I hired this guy to come repair my unit, first the didn't work and second time even broke my unit. They charged me total of $830 for repair, but nothing was working. They suggested me to replace the unit. I tired to arrange an appointment with them 3 times, still no show. I asked for a full refund on the amount I pay them (as said on the invoice, if they can't fix it , it's free) , they started to ignore my phone call. Don't ever use this company. They are extremely unresponsive once you paid them. Their number is 41666663070 and 4166277724.