Want a ductless Heating and A/C device for my shed

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

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

I added insulation and drywall to make it better to maintain climate control. I even added current windows and respectfully sealed around them. In the wintertime it was clear there were some harshly cold days. I bought a space heating system and it legitimately didn’t help much. I needed to turn on the oil furnace two minutes before working out. I had it set to the maximum heat setting and it didn’t legitimately help. I could work out and not be freezing, however I wasn’t warm, and now it is summertime and I am relying on a box fan; Everyone tells me to get a window I don’t want to mess around with installing, storing and maintaining a large A/C unit. I also think it won’t do the task right. My box fan doesn’t help at all. A window A/C device 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 device behind the shed. I then could have heating and that works for my whole building. I wouldn’t be too hot or cold again. I could even control the settings from my work kindle if I wanted. The only snag is the Heating and A/C replacement is invasive and the cost. It will be around 5 grand if I want to have this system.

heater technician