HVACSheet

Daikin RXTH18AVJU 1.5 ton ductless mini-split

Brand Daikin ENERGY STAR certified Series AURORA Updated

Most EfficientCold climate
Daikin Ductless mini-split

Model no. RXTH18AVJU*

Size
1.5 ton
SEER2
21
EER2
12
HSPF2
9.4

R-32

Daikin ductless mini-split from the AURORA line. Rated 21 SEER2. Meets ENERGY STAR cold climate criteria.

Model

Model number RXTH18AVJU*
Product series AURORA
Stages Variable speed

Performance

Nominal size 1.5 ton
Cooling capacity 18,000 BTU/h
Heating capacity 21,600 BTU/h
SEER2 21
EER2 12
HSPF2 9.4

Cold weather

Heating capacity at 17°F 20,800 BTU/h
Heating capacity at 5°F 21,600 BTU/h
COP at 5°F 1.8
Meets ENERGY STAR cold climate criteria Yes

Ratings across matchups

Lowest SEER2 21
Highest SEER2 21
Lowest HSPF2 9.4
Highest HSPF2 9.4
Certified matchups 1

Refrigerant

Refrigerant type R-32

Ratings and warranty

AHRI reference number 218672390
ENERGY STAR certified Yes
ENERGY STAR Most Efficient Yes
On the market since August 3, 2026
ENERGY STAR listed August 11, 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.
FTXV18AVJU* 21 12 9.4 218672390

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