This my first thread.
We are looking to refurb offices and add AC. There are 4 floors each requiring about 45Kw. Each floor to be an independant system. We have been recomended a heat recovery system. There seem to be significant price diffrences from diffrent manufacturers. As I understand Daikin and Mitsubushi are the market leaders. But i have been offered a Hitachi system and I was wondering how does it compare to the leaders in quality, reliability and technology.

Any advice welcome

Rammy