Compare mini-splits & heat pumps / Della Serena
Della · Serena
Della Serena 12,000 BTU 230V
Model 048-MS-12K2VR-22S-M
SCORE7.3 / 10
No efficiency gain over the 115V 12K (it posts slightly less heat at 5°F), so pick the voltage by the circuit you can run.
Specs
| Spec | Della Serena 12,000 BTU 230V |
|---|---|
| Nominal size | 12,000 BTU |
| Voltage | 230V |
| Rated heat at 47°F | 12,300 BTU/h |
| Heat at 17°F | 9,300 BTU/h |
| Heat at 5°F | 9,100 BTU/h |
| Lowest heating temp | 5°F |
| SEER2 | 22 |
| HSPF2 (Region IV) | 9.5 |
| Install type | Flare |
| Line set in box | 16.4 ft |
| Max line run | 65.6 ft |
| Warranty covers owner install | Conditional |
| ENERGY STAR Cold Climate | Yes |
| ENERGY STAR | Yes |
| Refrigerant | R-32 |
| EER2 | 11.3 |
| Warranty | 1 yr standard; lifetime parts and compressor if registered within 100 days; no labor or refrigerant |
| Factory charge | Covers up to 25 ft of line |
Sources: ENERGY STAR certified heat pump dataset · AHRI certificates · Della Serena manual (March 2025) · Della Serena CloudAir manual · Della warranty policy (dellahome.com)
Before you buy
- The listing says "Pre-Charged", but Della's FAQ says the lines are not pre-vacuumed; it is a flare-and-vacuum install.
- Della's printed manual says the extended warranty is for professional installation; the current web policy gives registered DIY installs replacement parts at Della's discretion. Screenshot it the day you buy.
- Della also sells Vario, Optima Pro, Hyper Heat and older R410A lines; most owner reports are about those.