Our verdict
Pick the DELLA Vario 12,000 BTU 115V if you prefer R-454B. Pick the COSTWAY 12,000 BTU 115V Mini-Split if you prefer R-32 and it's going in a bedroom.
The central trade-off
Efficiency. The DELLA Vario 12,000 BTU 115V lists 20.5 SEER2; the COSTWAY 12,000 BTU 115V Mini-Split lists 20 SEER.
Refrigerant. R-454B in the DELLA Vario 12,000 BTU 115V, R-32 in the COSTWAY 12,000 BTU 115V Mini-Split.
Noise. The COSTWAY 12,000 BTU 115V Mini-Split lists 23 dB indoors at its quietest, against 42 dB.
Side by side
| Specification | DELLA Vario 12,000 BTU 115V | COSTWAY 12,000 BTU 115V Mini-Split |
|---|---|---|
| Cooling (maker) | 12000 BTU | 12000 BTU |
| Heating (maker) | 12000 BTU | 12300 BTU |
| SEER2 | 20.5 | 20 |
| HSPF2 | Not stated by the maker | Not stated by the maker |
| Heats down to (maker) | Not stated by the maker | Not stated by the maker |
| Voltage | 115 V | 115 V AC |
| Refrigerant | R-454B | R-32 |
| Room size (maker) | 550 sq ft | 750 sq ft |
| Indoor noise (maker) | 42 db | 23 db |
| Line set included | Not stated by the maker | Not stated by the maker |
| Warranty | Not stated by the maker | Not stated by the maker |
Values are the makers' published specifications. "Not stated" means the maker doesn't publish it.
Which should you choose?
Choose the COSTWAY 12,000 BTU 115V Mini-Split if
- You prefer R-32
- It's going in a bedroom