Compare mini-splits & heat pumps / Della Serena
Della · Serena
Della Serena 9,000 BTU 115V
Model 048-MS-9K1VR-22S-M
SCORE7.3 / 10
Della publishes no cold-weather figures for either 9K, so we can't tell you how it heats on a cold night. The 230V version is the more efficient heater on paper.
Specs
| Spec | Della Serena 9,000 BTU 115V |
|---|---|
| Nominal size | 9,000 BTU |
| Voltage | 115V |
| Rated heat at 47°F | 9,800 BTU/h |
| Lowest heating temp | 5°F |
| SEER2 | 22 |
| HSPF2 (Region IV) | 8.5 |
| Install type | Flare |
| Line set in box | 16.4 ft |
| Max line run | 65.6 ft |
| Warranty covers owner install | Conditional |
| Refrigerant | R-32 |
| 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.