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MRCOOL O-series (O-HH-09-HP-C-230A)

Ranked #39 of 60 in Best compact mini-split heat pumps, ranked on official ENERGY STAR specs. Here is every spec we scored, where it came from, and how it compares.

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#39

MRCOOL O-series (O-HH-09-HP-C-230A)

Best for: Official 9,000 Btu/h official cooling, 28.1 official SEER2

7.9/10

What we like

  • Official ENERGY STAR record lists 28.1 SEER2.
  • Official ENERGY STAR record lists 11.5 HSPF2.
  • Official ENERGY STAR record lists a cold-climate designation.

Watch out for

  • Official ratings are for the certified outdoor and indoor combination shown; a different official indoor head can change the certified figures.

Score breakdown

Official SEER2 30%
Official HSPF2 25%
Official EER2 20%
Official COP at 5°F 25%
Official SEER228.1
Official HSPF211.5
Official EER216.2
Official COP at 5°F2
Official ENERGY STAR unique ID2,451,016
Official outdoor unit model numberO-HH-09-HP-C-230A
Official indoor unit model numberO-09-HP-WMAH-230B
Official series nameO-series
Official product typeHP - Mini or Multi Split
Official cooling capacity9,000 Btu/h
Official heating capacity at 47°F12,000 Btu/h
Official heating capacity at 17°F9,500 Btu/h
Official heating capacity at 5°F10,600 Btu/h
Official cold-climate designationYes
Official ENERGY STAR Most Efficient 2025Yes
Official refrigerant typeR-410A
Official AHRI reference number207339161
Official ENERGY STAR date certified06/29/2026
PriceCheck price
Fujitsu AIRSTAGE H-Series (AOUH09KTAP1)
9.7/10
#1 · Official 9,000 Btu/h official cooling, 33.5 official SEER2
Mitsubishi Electric M-Series (MUZ-FX06NLHZ)
9.5/10
#2 · Official 6,000 Btu/h official cooling, 35 official SEER2
Mitsubishi Electric M-Series (MUZ-FX06NLHZ2)
9.5/10
#3 · Official 6,000 Btu/h official cooling, 35 official SEER2
Toshiba Carrier RAV-BP121AT2P-UL
8.8/10
#4 · Official 12,000 Btu/h official cooling, 26 official SEER2
Panasonic ClimaPure XZ (CS-XZ9AKUAW/CU-XZ9AKUAC)
8.7/10
#5 · Official 8,700 Btu/h official cooling, 27.5 official SEER2
Panasonic Deluxe Z (CS-Z9AKUAW/CU-XZ9AKUAC)
8.7/10
#6 · Official 8,700 Btu/h official cooling, 27.5 official SEER2
Blueridge BMS Series (BMS635SHYC)
8.6/10
#7 · Official 6,000 Btu/h official cooling, 35 official SEER2
Blueridge BXS Series (BXS6A06UC0)
8.6/10
#8 · Official 6,000 Btu/h official cooling, 35 official SEER2
Carrier 45M Series (37MPRAQ06AA3)
8.6/10
#9 · Official 6,000 Btu/h official cooling, 35.1 official SEER2
Carrier 45M Series (37MPRAQ09AA3)
8.6/10
#10 · Official 9,000 Btu/h official cooling, 33.5 official SEER2
Fujitsu H-Series (AOUG09LZAH1)
8.6/10
#11 · Official 9,000 Btu/h official cooling, 33.1 official SEER2
Hisense Hi-PRO (AO-09U3T25P)
8.6/10
#12 · Official 9,000 Btu/h official cooling, 32 official SEER2
Hisense Hi-PRO (AO-09U3T26P2)
8.6/10
#13 · Official 9,000 Btu/h official cooling, 32 official SEER2
Midea MSE Series (MO1SS-H06B-2A)
8.6/10
#14 · Official 6,000 Btu/h official cooling, 35 official SEER2
Midea MSE Series (MO1SS-H09B-2A)
8.6/10
#15 · Official 9,000 Btu/h official cooling, 33.3 official SEER2
Senville SENE Series (SENE-09EL-OH)
8.6/10
#16 · Official 9,000 Btu/h official cooling, 33.3 official SEER2
Trane / Mitsubishi Electric M-Series (NTXSPB06B112A)
8.6/10
#17 · Official 6,000 Btu/h official cooling, 32.2 official SEER2
GE Appliances Endure (ASH109URDE)
8.4/10
#18 · Official 9,000 Btu/h official cooling, 30 official SEER2
Haier Arctic (1U09EH2HE)
8.4/10
#19 · Official 9,000 Btu/h official cooling, 30 official SEER2
Lennox MPC series (MPC009S4S-1P)
8.4/10
#20 · Official 6,000 Btu/h official cooling, 26.5 official SEER2
LG KUSAL091A
8.4/10
#21 · Official 9,000 Btu/h official cooling, 27 official SEER2
LG KUSAL092A
8.4/10
#22 · Official 9,000 Btu/h official cooling, 27 official SEER2
Goodman MSH Series (MSH093G26MCAA)
8.3/10
#23 · Official 9,000 Btu/h official cooling, 29 official SEER2
GE Appliances Endure (ASH109URDSE)
8.2/10
#24 · Official 9,000 Btu/h official cooling, 30 official SEER2
Haier Arctic (1U09EH2VHE)
8.2/10
#25 · Official 9,000 Btu/h official cooling, 30 official SEER2
Gree Airy (GS09HP230V1RYO)
8.0/10
#26 · Official 9,100 Btu/h official cooling, 30 official SEER2
Gree AIRY09HP230V1AO
8.0/10
#27 · Official 9,100 Btu/h official cooling, 30 official SEER2
Hitachi airHome 800 (RAC-XJ09WHAA)
8.0/10
#28 · Official 9,500 Btu/h official cooling, 26.5 official SEER2
Hitachi airHome 800 (RAC-XJ09WHBA)
8.0/10
#29 · Official 9,500 Btu/h official cooling, 26.5 official SEER2
Senville SENE Series (SENE-12EL-OH)
8.0/10
#30 · Official 12,000 Btu/h official cooling, 29.4 official SEER2
Tosot Airy (TW09HAY32A1DO)
8.0/10
#31 · Official 9,100 Btu/h official cooling, 30 official SEER2
Tosot Airy (TW09HAY32A1DOC)
8.0/10
#32 · Official 9,100 Btu/h official cooling, 30 official SEER2
York Y800 (YRACXJ09WHAA)
8.0/10
#33 · Official 9,500 Btu/h official cooling, 26.5 official SEER2
York Y800 (YRACXJ09WHBA)
8.0/10
#34 · Official 9,500 Btu/h official cooling, 26.5 official SEER2
ACIQ ACIQ-09ZPL-HP230B
7.9/10
#35 · Official 9,000 Btu/h official cooling, 28.1 official SEER2
Bosch BMS500-AAS009-1CSXHC
7.9/10
#36 · Official 9,000 Btu/h official cooling, 28.1 official SEER2
Cooper & Hunter CH series (CH-HPR09-230VO)
7.9/10
#37 · Official 9,000 Btu/h official cooling, 28.1 official SEER2
Lennox M series (MLB009S4S-1P)
7.9/10
#38 · Official 9,000 Btu/h official cooling, 28.1 official SEER2
MRCOOL O-series (O-HH-09-HP-C-230B)
7.9/10
#40 · Official 9,000 Btu/h official cooling, 28.1 official SEER2
Napoleon NDH series (NDHAS26-09-O)
7.9/10
#41 · Official 9,000 Btu/h official cooling, 28.1 official SEER2
Goodman MSH Series (MSH123G26MCAA)
7.7/10
#42 · Official 12,000 Btu/h official cooling, 27.5 official SEER2
ACIQ ACIQ Series (ACIQ-09ZPL-HP230C)
7.6/10
#43 · Official 9,000 Btu/h official cooling, 27.4 official SEER2
Bosch BMS Series (BMS500-AAS009-1CSXHD)
7.6/10
#44 · Official 9,000 Btu/h official cooling, 27.4 official SEER2
Cooper & Hunter CH Series (CH-RHP09-230VO)
7.6/10
#45 · Official 9,000 Btu/h official cooling, 27.4 official SEER2
Napoleon NDH Series (NDHAS26BA-09-O)
7.6/10
#46 · Official 9,000 Btu/h official cooling, 27.4 official SEER2
Trane 38 Series (4TXK3809B10NU)
7.2/10
#47 · Official 9,000 Btu/h official cooling, 27 official SEER2
Samsung WindFree - Max heat (RAC) (AR09DXDACWKX)
7.1/10
#48 · Official 9,000 Btu/h official cooling, 25 official SEER2
Samsung WindFree - Premium (RAC) (AR09DXDABWKX)
7.1/10
#49 · Official 9,000 Btu/h official cooling, 25 official SEER2
Friedrich Floating Air Pro (FPHSR09A3B)
6.4/10
#50 · Official 9,000 Btu/h official cooling, 25 official SEER2
Friedrich Floating Air Pro (FPHSR09A3D)
6.4/10
#51 · Official 9,000 Btu/h official cooling, 25 official SEER2
Pioneer WYF HYPERFORMANCE (YN009GHFI25RPH)
6.4/10
#52 · Official 9,000 Btu/h official cooling, 25.5 official SEER2
Della 048-C-TPH-9K2V-25S-OUT
5.8/10
#53 · Official 9,000 Btu/h official cooling, 25 official SEER2
Pioneer Diamante Hyperformance (YN009GLSI25RPH)
5.8/10
#54 · Official 9,000 Btu/h official cooling, 25 official SEER2
TCL EXHEAT (H09SUH25XGC)
5.8/10
#55 · Official 9,000 Btu/h official cooling, 25 official SEER2
Della 048-C-TPH-12K2V-25S-OUT
5.6/10
#56 · Official 12,000 Btu/h official cooling, 25 official SEER2
TCL EXHEAT (H12SUH25XGC)
5.6/10
#57 · Official 12,000 Btu/h official cooling, 25 official SEER2
Daikin ATMOSPHERA (RXM12WVJU)
5.5/10
#58 · Official 12,000 Btu/h official cooling, 25.2 official SEER2
Daikin OTERRA (RXF09AXVJU)
4.9/10
#59 · Official 9,000 Btu/h official cooling, 21 official SEER2
Trane 38 Series (4TXK3812A10NU)
4.6/10
#60 · Official 12,000 Btu/h official cooling, 24 official SEER2