18k vs. 24k fujitsu minisplit
I know these “help me size my minisplit” threads are becoming repetitive – sorry to add to the pile.
A manual J shows that an 18k btu unit should cover my heating needs (model 18rlxfwh). I am dealing with an installer who pushed a 24k btu unit at a pretty minimal up-charge: about $200 more for the larger unit. The recommendation is not based on any calculations, but I am wondering if there is any reason not to go with the larger unit.
If I am interpreting data correctly, the 18 modulates to 7kbtu, and the 24 to 7.5kbtu. Both should operate continuously during the majority of my heating season. The 24 has a higher cop of 13 vs. 12.3.
It seems like the larger unit is more efficient and modulates to an acceptable minimum, but with quite a bit more kick at the top end. Am I reading the data correctly? Missing anything?
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