Della · Single-Zone
~$850
Della JPB 12,000 BTU (20 SEER2)
Budget buyers who already own (or will rent) a vacuum pump and want maximum cooling per dollar over install convenience.
- BTU/h
- 12k
- Volts
- 115
- Refrig.
- R-32
- SEER2
- 20
- HSPF2
- —
- Heats to
- 5°F
Della · Single-Zone
Della Optima Pro CloudAir 12,000 BTU (25 SEER2)
TPHX-12K2V-25S-I+O
~$1,250approximate retailer price at last check, equipment only
- BTU/h
- 12k
- Volts
- 208/230
- Zones
- 1
- SEER2
- 25
- HSPF2
- 10.5
- Heats to
- -22°F
- Refrig.
- R-454B
- Covers
- 550 ft²
- Wi-Fi
- Built in
Best forCold-climate buyers who want a lower price than the NEEP-listed brands and will accept the maker's own claims about cold-weather output until certified numbers exist.
Overview
The Optima Pro CloudAir is Della's top single-zone unit: 25 SEER2 and 10.5 HSPF2 on its AHRI certificate, ENERGY STAR, R-454B, and a published heating range down to -22°F. CloudAir is a perforated vane that spreads the airflow instead of blowing it straight at the room. On paper that heating range puts it alongside the cold-climate units from Mitsubishi, Fujitsu and Gree at a lower price. The difference is certification. Those units are on NEEP's cold-climate list with measured output at 5°F; the Optima Pro is not. Della's page says it keeps 100% of its heating capacity at 5°F, but no independent listing backs that up yet, and -22°F is the point where it stops running, not a capacity figure. Install is a flare-and-vacuum job with lifetime parts coverage only if you register within 100 days. The model is new (the AHRI certificate is dated May 2026), so there is little owner feedback so far.
- 25 SEER2 / 10.5 HSPF2 (AHRI certified)
- Rated to operate to -22°F
- Cold-weather output not independently certified
Cold-weather output
No current listing on NEEP's cold-climate heat pump list. Della rates it to keep running down to -22°F; without a listing there's no certified 5°F capacity figure to check that claim against.
Strengths and catches
Strengths
- +25 SEER2 and 10.5 HSPF2 on an AHRI certificate, plus ENERGY STAR
- +Published heating range down to -22°F, the lowest of any Della
- +Several hundred dollars less than NEEP-listed hyper-heat 12k units
- +CloudAir diffuser vane spreads airflow to cut drafts
- +30 dB mute mode; app and Alexa control included
Catches
- −Not on the NEEP cold-climate list: the 100%-at-5°F claim is the maker's own
- −-22°F is an operating limit, not certified output at that temperature
- −Flare-and-vacuum install: the lineset is not quick-connect
- −New model (2026) with very little owner feedback yet
Similar systems
Everything from Della
Della · Single-Zone
~$780
Della Vario 12,000 BTU (23 SEER2)
Buyers with a 230V circuit who want more efficiency and a lower heating floor than Della's 115V units, and are comfortable doing a flare-and-vacuum install.
- BTU/h
- 12k
- Volts
- 208/230
- Refrig.
- R-454B
- SEER2
- 23
- HSPF2
- 9.5
- Heats to
- -4°F
Della · Single-Zone
~$770
Della Motto 12,000 BTU
Value-focused cooling for bedrooms and offices in moderate climates.
- BTU/h
- 12k
- Volts
- 115
- Refrig.
- R-32
- SEER2
- 20
- HSPF2
- 8
- Heats to
- 5°F