What became of the 18,000 BTU, 25.3 SEER, HSPF 13.4 Fujitsu mini-splits?
Roughly five years ago, Fujistu was making a 15RLS3 1.5 Ton Single Zone Ductless Mini Split System with the following specs:
It had low ambient heating and sold for just over $1700 shipped.
Now, the highest-performing 18,000 BTU single-zone Fujitsu ductless I can find on their site or any retail sites has the following specs:
Where I live, in central AZ, we have 3214 heating-degree days and 1801 cooling-degree days, so the decrease in HSPF from 13.4 to 10.4 seems particularly unfortunate.
Normally technology like this improves over time. Has the way the SEER and HSPF are tested changed since five years ago, or if not, what accounts for the apparent drop in performance?
Does Fujistu still make the best ductless mini-splits, as the large majority of comments in the forums here seem to indicate, or has someone overtaken them? The GE AS18URD, for example, looks better in terms of its SEER 23 and HSPF 12, but I understand there’s a lot more to consider than these two specs, and a couple of posts here a year + ago indicated GE units perform badly at low temperatures.
FWIW, I’ll be installing the system myself or getting help just on the tasks that require special equipment like a vacuum pump.
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