Good source for minisplit turndown ratios and turndown vs. HSPF / SEER?
I was going to ask this on this thread:
But realized it was a separate question.
Does anyone know of a good analysis of the energy impact of turndown ratio vs seer/hpsf for current mini split equipment? It would be interesting to see some modeling of higher hpsf/seer equipment vs broader turndown ratios? It would seem that for a lot of applications, especially divided spaces with modest loads, that turndown ratio would matter more for both efficiency and comfort. For example, in Colorado, evening temperatures (master bedroom mini for example) require cooling typically until midnight but the demand is fairly low beyond initial startup. 99% peak load will be pretty high compared to typical use, especially if the equipment is mostly off during the day. If you aren’t talking about a space with 1 ton+ load during typical operation, it seems like turndown ratio could matter a lot more for efficiency than hpsf/seer. To point, does a lower minimum load on LG (1000 btus I believe) potentially trump higher SEER on equipment with a higher minimum (i think some of the high seer mitsubishi’s only turndown to 2800 btus). Not surprisingly, a manual D/j doesn’t help much.
Maybe this was covered elsewhere?
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