• MRCOOL | MRCOOL Olympus 4th Gen Wall AH 12,000 BTU (1 Ton) – O-12-HP-WMAH-230C-O | CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS CLICK TO CALL US 737-738-6329 FOR A
  • MRCOOL | MRCOOL Olympus 4th Gen Wall AH 12,000 BTU (1 Ton) – O-12-HP-WMAH-230C-O | CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS CLICK TO CALL US 737-738-6329 FOR A
  • MRCOOL | MRCOOL Olympus 4th Gen Wall AH 12,000 BTU (1 Ton) – O-12-HP-WMAH-230C-O | CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS CLICK TO CALL US 737-738-6329 FOR A
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MRCOOL

MRCOOL Olympus 4th Gen Wall AH 9,000 BTU (3/4 Ton) – O-09-HP-WMAH-230C-O

SKU: O-09-HP-WMAH-230C-O

System highlights
AC Type
Wall Mount
Refrigerant Type
R454B
Brand
MRCOOL
Indoor Unit
9000 BTU (0.75 TON)
Voltage
208-230V
Looking For
Wall Mount
Cooling Area (sq.ft.)
250-400
Series
Olympus 4th Generation
Installation Kit
$382.00 USD
$284.57 USD $382.00 USD
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MRCOOL — Wall Mount

MRCOOL Olympus 4th Gen Wall AH 9,000 BTU (3/4 Ton) – O-09-HP-WMAH-230C-O

Contact for custom quotes Call 800-543-8933

CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS

CLICK TO CALL US 800-543-8933 FOR ANY QUESTIONS

MRCOOL Olympus 4th Gen Wall AH 9,000 BTU (3/4 Ton) – O-09-HP-WMAH-230C-O

Overview

Built for rooms up to 400 sq. ft., the ESTAR® 9K wall unit keeps comfort dialed-in with whisper-quiet operation to 19.5 dBA, simple setup, and flexible control options—Wi-Fi app, voice commands, or the included remote. With up to SEER2 25.8 efficiency and low-GWP R-454B, it’s a compact, energy-smart choice for bedrooms and home offices. Warranty includes limited lifetime, 7-year compressor, and 5-year parts.

Quick Facts

  • Capacity: 9,000 BTU (3/4 Ton)
  • Coverage: Up to 400 sq. ft.
  • Refrigerant: R-454B
  • Voltage/Phase/Frequency: 208/230V, 1-Phase, 60 Hz
  • Sound: 38 / 38 / 33 / 20.5 / 19.5 dBA
  • Fan Speeds: 5 (Variable) with Oscillation
  • Smart Control: Wi-Fi + App + Alexa/Google
  • Listings: UL, CSA, ETL

Use our sizing calculator (BTU Calculator).

Works With (Outdoor Units)

O-ES-09-HP-C-230C-O1, MULTI3-18HP230C-O, MULTI4-27HP230C-O, MULTI5-36HP230C-O, MULTI6-48HP230C-O

Key Features

  • Sleek, compact wall-mount
  • Ultra-quiet down to 19.5 dBA
  • R-454B low-GWP refrigerant
  • Wi-Fi/app/voice + remote

Technical Specifications

Specification Details
Brand / Series MRCOOL / Olympus 4th Gen Air Handlers
Model O-09-HP-WMAH-230C-O
GTIN / UPC 00840255587709 / 840255587709
Unit Type Mini-Split
Tonnage 0.75
Voltage / Phase / Cycle 208/230V / 1-Phase / 60 Hz
Max Fuse Breaker 15 A
Min Circuit Ampacity 3 A
Mount Type Wall
Color White
Max Coverage Area Up to 400
Refrigerant Type R-454B
Sound (dBA) 38 / 38 / 33 / 20.5 / 19.5
Number of Speeds 5 (Variable)
Oscillation Yes
Lineset Fitting Type Flare
Liquid / Suction Line 1/4" / 3/8"
Blower Motor Speeds (CFM) 441.4 / 323.7 / 229.6 / 176.6 / 147.2
Blower Motor RPM 1100 / 850 / 700
Filter Type Reusable
Aux Heater (Incl/Avail) No / No
Fan Only / Sleep / Auto Cool Yes / Yes / Yes
Wi-Fi / App / iOS / Android Yes / Yes / Yes / Yes
Remote Included Yes
UL / CSA / ETL Listed Yes / Yes / Yes
Prop 65 Yes
Restricted States GU, PR, VI
Net Dimensions (HxWxD) 11.81" × 33.74" × 9.09"
Net / Gross Weight 23.37 lbs / 29.98 lbs
Gross Dimensions (HxWxD) 14.57" × 36.22" × 12.2"

Warranty Information

  • Limited Lifetime (see MRCOOL terms)
  • 7-Year Compressor Coverage
  • 5-Year Parts Warranty

Manuals & Downloads

Please note: Indoor air handler must be matched with a compatible MRCOOL outdoor unit.