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AC_Hacker · 09-22-16, 12:09 PM

I was looking over these specs on the Gree NEO09230V-143815

GREE Neo 9,000 BTU Ductless Mini Split A/C FREE 15' Line Set

If you intend to use a Mini-Split when your most challenging season is summer, then the SEER rating make the best performance-identifier for comparison.

But if you intend to use a Mini-Split when your most challenging season is winter you would use HSPF (Heating Season Performance Factor) instead.

Looking at the specs, it seems odd that the rated capacity is the same for heating and cooling, since in cooling, the unit has to dump the heat from the compressor, along with its real work which is cooling the target area. Likewise, these units advantageously utilize the heat from the compressor when heating. So, it just doesn't add up.

Also, when looking over the specs for heating (my intended use) the COP is very important. The specs site COP=3.8.

However, I can calculate the heating season COP by dividing the HPSF (9.8) by 3.412.

When I do this COP = 9.8 / 3.412

I get 2.87221570926143 = COP = 2.9

That's big difference.

COP is always higher for heating than it is for cooling because of the contribution of the compressor heat.

These are very squishy specs.

-AC

09-22-16, 12:09 PM	#4
AC_Hacker Supreme EcoRenovator Join Date: Mar 2009 Location: Portland, OR Posts: 4,004 Thanks: 303 Thanked 723 Times in 534 Posts	I was looking over these specs on the Gree NEO09230V-143815 GREE Neo 9,000 BTU Ductless Mini Split A/C FREE 15' Line Set If you intend to use a Mini-Split when your most challenging season is summer, then the SEER rating make the best performance-identifier for comparison. But if you intend to use a Mini-Split when your most challenging season is winter you would use HSPF (Heating Season Performance Factor) instead. Looking at the specs, it seems odd that the rated capacity is the same for heating and cooling, since in cooling, the unit has to dump the heat from the compressor, along with its real work which is cooling the target area. Likewise, these units advantageously utilize the heat from the compressor when heating. So, it just doesn't add up. Also, when looking over the specs for heating (my intended use) the COP is very important. The specs site COP=3.8. However, I can calculate the heating season COP by dividing the HPSF (9.8) by 3.412. When I do this COP = 9.8 / 3.412 I get 2.87221570926143 = COP = 2.9 That's big difference. COP is always higher for heating than it is for cooling because of the contribution of the compressor heat. These are very squishy specs. -AC __________________ I'm not an HVAC technician. In fact, I'm barely even a hacker...