I want to shock him with heat

For Christmas I want to provide my best man a ductless mini cut in his shed.

He loves working on unusual projects.

He does a lot of woodworking, welding as well as assorted repairs in his little space. The issue is that he has no heating or cooling. In the long and difficult Summer he has trouble working on his pieces because of the drastic amount of sunshine as well as lack of air. In the Wintertide it is just plain too cold. A brand new ductless mini cut could certainly mount on the exterior wall with a smart thermostat. That way, I figure, he could adjust the HVAC system from our comfortable home as well as have the little shed at the right temperature by the time he is ready to work. The issue I am experiencing right now is getting a Heating, Ventilation & A/C serviceman over to the home to install the unit on the right time schedule. First, I need to sneak Heating, Ventilation & A/C in the shed without my man noticing. So I have to get a quick Heating, Ventilation & A/C installation. I am hoping to easily get the Heating, Ventilation & A/C installed on the 23rd or 24th of the month, and not a lot of Heating, Ventilation & A/C companies want to work that day. I also need the entire Heating, Ventilation & A/C service team to come late at evening while my man is at the gym. Again, not a lot of Heating, Ventilation & A/C professionals want to do a job at this time. The Heating, Ventilation & A/C dealers I am calling around cannot understand the overall point. One HVAC tech said if there was something wrong in the installation or a piece missing, I would essentially be screwed in the endeavor. I am putting a lot of faith in everything going perfect for this surprise gift. It is the only system I have though.

Heating dealer