Want a ductless HVAC unit for my shed

My backyard shed needs better heating and cooling than I am offering.

When I moved into my home and saw the shed, I knew it would be a home gym.

I added insulation and drywall to make it better to maintain climate control. I even added new windows and properly sealed around them. In the wintertime it was clear there were some extremely cold days. I bought a space heater and it really didn’t help much. I needed to turn on the heating system two hours before working out. I had it set to the maximum heat setting and it didn’t really help. I could work out and not be freezing, but I wasn’t warm. Now it is summertime and I am relying on a box fan. Everyone tells me to get a window air conditioner. I don’t want to mess around with installing, storing and maintaining a giant AC unit. I also know it won’t do the job right. My box fan doesn’t help at all. A window AC unit won’t be powerful enough either. What I need to get is a ductless mini split. I can have an indoor air handler mounted on the wall and hide the outdoor unit behind the shed. I then could have heating and air conditioning that works for my whole building. I wouldn’t be too hot or cold again. I could even control the settings from my work computer if I wanted. The only snag is the HVAC installation is invasive and the cost. It will be around five grand if I want to have this system.

heating technician