In this video I installed a ‪@MrcoolComfort‬ Heat Pump four our second floor to replace the old broken Carrier unit. I didn't record every step because the sweltering heat outside and sauna of the attic wasn't conducive for filming. The outdoor unit isn't functioning and I believe it may have a bad circuit board. Still waiting to hear back from MrCool 2 days after install. There will be a follow-up video when the problem is resolved.