Mitsubishi RUZ-AH12NLZ 1 ton ductless mini-split

Brand Mitsubishi ENERGY STAR certified Series R series Updated

Most EfficientCold climate
Mitsubishi Ductless mini-split

Model no. RUZ-AH12NLZ***

Size
1 ton
SEER2
16.5
EER2
13.4
HSPF2
8.5

R-454B

Mitsubishi ductless mini-split from the R series line. Rated 16.5 SEER2. Meets ENERGY STAR cold climate criteria.

Model

Model number RUZ-AH12NLZ***
Product series R series
Stages Variable speed

Performance

Nominal size 1 ton
Cooling capacity 11,000 BTU/h
Heating capacity 15,000 BTU/h
SEER2 16.5
EER2 13.4
HSPF2 8.5

Cold weather

Heating capacity at 17°F 9,600 BTU/h
Heating capacity at 5°F 15,000 BTU/h
COP at 5°F 1.9
Meets ENERGY STAR cold climate criteria Yes

Ratings across matchups

Lowest SEER2 16.5
Highest SEER2 16.5
Lowest HSPF2 8.5
Highest HSPF2 8.5
Certified matchups 1

Refrigerant

Refrigerant type R-454B

Ratings and warranty

AHRI reference number 218680154
ENERGY STAR certified Yes
ENERGY STAR Most Efficient Yes
On the market since September 1, 2026
ENERGY STAR listed July 17, 2026

Notes

Certified matchups

Top certified matchups for this outdoor unit, from ENERGY STAR data. Ratings depend on the indoor coil or furnace it is paired with.

Indoor unit Furnace SEER2 EER2 HSPF2 AHRI ref.
RVZ-AP12NL*** 16.5 13.4 8.5 218680154