Evaluating Mini split HVAC Heat Pump Options - Cooling and Heat

[Pierre E.]

Wanted some ideas/opinions on adding a mini-split to a property in the Mid-Atlantic Region. The main purpose is for cooling (a must, gets unbearably hot in the summer), but hoping to be able to get rid of the radiators as well in a 600-700 sqft space.

I know radiators with a boiler are considered more efficient, but removing them and their piping would enhance the usability of such a small space. It would also limit the number of openings in the walls, allow for better weatherization and sealing. (I would consider radiant floor heat instead since theres a possibility the flooring will be updated as well but I have heard that it costs a lot. If you have comments on this feel free to add though)

I have considered replacing radiators with newer ones that take less space but the minisplit for cooling is a requirement, and I feel like it would be an opportunity to have both.

1 - What are some mini-split basics I should understand before choosing a contractor?

2 - What are your thoughts on the efficacy of mini-split heating in the Mid-Atlantic region? (Maryland, Virginia, PA, Del)

3- Any other ideas or alternatives to consider?