Rossn
Member
As part of my remodel, I am installing a Mitsubishi 5 head mini-split system. I was going to rough it in, but ultimately, it only saved me a few thousand over a full install, so I am going that route.
The contractor who I would like to use is sizing the system with a 5Ton condenser, and per the Diamond System Builder, I can actually be fine with the 4-ton. He is not charging me more for the upgrade to 5T.
My head units come up to 60K BTUs, and 62,400 are allowed. Only 3 of the heads will run regularly, and they total 42k BTUs. The other 2 heads I would call very light duty cycle (4' below grade area).
So, the question (for someone who has specific knowledge on these, please) is if I will be less efficient, short cycle, or have shorter equipment life with the 5T unit, versus the 4T? Or... does the modulating nature of these units make this relationship OK.
From what I've read, oversizing with a mini-split condenser is not the best idea, and that in-fact, they run a bit better when they are operating above that 100% mark, due to the fact the head units modulate.
Thanks!
The contractor who I would like to use is sizing the system with a 5Ton condenser, and per the Diamond System Builder, I can actually be fine with the 4-ton. He is not charging me more for the upgrade to 5T.
My head units come up to 60K BTUs, and 62,400 are allowed. Only 3 of the heads will run regularly, and they total 42k BTUs. The other 2 heads I would call very light duty cycle (4' below grade area).
So, the question (for someone who has specific knowledge on these, please) is if I will be less efficient, short cycle, or have shorter equipment life with the 5T unit, versus the 4T? Or... does the modulating nature of these units make this relationship OK.
From what I've read, oversizing with a mini-split condenser is not the best idea, and that in-fact, they run a bit better when they are operating above that 100% mark, due to the fact the head units modulate.
Thanks!