Adding air to a lower level

I’ve consistently been told that older homes need more work! I’ve consistently known this however I’ve shrugged off the idea that it’s true.

When I was buying my loft my parents thought it was a poor idea.

All of the houses that we moved into when we were younger were consistently brand new. My parents didn’t want to do much renovating or replacing unit or appliances. Once I was in the buying process they would tell me, you’re going to regret it! Now that I have been in my loft for six months now I have done a lot of renovating. To be tolerable it has been terrible although I enjoy the way my loft looks now! Since most of my loft is completed, I want to start redoing my basement. My basement is pretty big plus I feel it has a lot of potential. Since the loft is older, there is no heating or cooling down there. There are a few vents although I don’t feel any air comes out of them. I have been told that the best type of heating plus cooling system that I should use is a mini split heat pump in my basement. This is because I should keep the basement plus loft air separate from each other. I do want to get a second opinion though so I will be contacting my local Heating and A/C provider to see what option is best. I’m hoping that whatever option I choose it won’t be a hassle or cost me a lot of currency.