I’m trying to find the goldilocks indoor unit for part of my home (NJ, climate zone 4A). Total load calc is 19,306 Btu/h (heating) and 15,947 Btu/h (cooling). Air flow is 741 cfm @ 0.6 in. wc.
I do not want to oversize the system. At first glance, an 18,000 Btu/h unit would seem to be most appropriate, but it seems none of them can produce the required airflow for this situation. The downside of stepping up to 24,000 Btu/h is that the modulation capability of many of those units seems to not be ideal.
Another ‘design constraint’: if I can get to 18 SEER, 12 EER, 10 HSPF, and COP of 1.75 @ 5 F, I get $2,000 from the state.
I had thought the Fujitsu ‘mid-static’ unit (24RGLXD) was going to be a good option, but it misses out on the SEER requirement for the rebate.
Enter the AMUG24LMAS, a unit that is more like a traditional air handler, but seems to have decent modulation characteristics (minimum heating of 5,400 Btu/h @ 47 F).
Has anyone seen these in the wild or heard anything about them? Information is scarce online (I can’t even find a dealer that advertises selling it), so I’m wondering if it’s new product that’s not really made its way out yet.
Also open to recommendations of other units I may have missed in my research!