Pick the COSTWAY 12,000 BTU 115V Mini-Split if you prefer R-32 and it's going in a bedroom. Pick the Senville LETO 12,000 BTU 115V if lower running costs matter most and you need a stated cold-weather rating.
The central trade-off
Efficiency. The Senville LETO 12,000 BTU 115V is rated 20.8 SEER against 20 for the COSTWAY 12,000 BTU 115V Mini-Split, roughly 4% less cooling energy at the same output.
Cold weather. The Senville LETO 12,000 BTU 115V is rated to heat down to 5°F; the COSTWAY 12,000 BTU 115V Mini-Split's listing doesn't state a low-temperature limit.
Refrigerant. R-32 in the COSTWAY 12,000 BTU 115V Mini-Split, R-454B in the Senville LETO 12,000 BTU 115V.
Noise. The COSTWAY 12,000 BTU 115V Mini-Split lists 23 dB indoors at its quietest, against 28 dB.
Side by side
| Specification | COSTWAY 12,000 BTU 115V Mini-Split | Senville LETO 12,000 BTU 115V |
|---|---|---|
| Cooling (maker) | 12000 BTU | 12000 BTU |
| Heating (maker) | 12300 BTU | Not stated by the maker |
| SEER2 | Not stated by the maker | 20.8 |
| HSPF2 | Not stated by the maker | Not stated by the maker |
| Heats down to (maker) | Not stated by the maker | 5°F |
| Voltage | 115 V AC | 110 V |
| Refrigerant | R-32 | R-454B |
| Room size (maker) | 750 sq ft | 700 sq ft |
| Indoor noise (maker) | 23 db | 28 db |
| Line set included | Not stated by the maker | 16ft. line set |
| 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
Choose the Senville LETO 12,000 BTU 115V if
- Lower running costs matter most
- You need a stated cold-weather rating
- You prefer R-454B