• Air conditioning unit with external and internal components, OLMO branding visible.
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  • Air conditioning unit with 'OMO' branding on a white background
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OLMO - R410A - 21.0 - 2 zone - Wall Mount - Sierra - 208-230V

2-Zone 18,000 BTU (1.5 Ton) R410A – Wall Mount AC & Heat Pump

2-Zone 18,000 BTU (1.5 Ton) R410A – Wall Mount AC & Heat Pump

$784.55 USD
$923.00 USD $784.55 USD
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Olmo Sierra 2-Zone | 18,000 BTU Multi-Zone, 230V (R410A) – Wall Mount

Multi-room comfort for 2 spaces. Wall Mount indoors, inverter heat pump outdoors, optional smart control, and up to 21.0 SEER2 efficiency.

18,000 BTU Up to 2  Zones Up to 21.0 SEER2 R410A 230V Wi-Fi  Smart Connect from Anywhere Choose your Line Set 5 Compressor / 2 Parts*

Why homeowners love it

  • Multi-zone comfort: Heat/cool 2 rooms independently for targeted comfort.
  • Efficient inverter: Variable-speed compressor reduces power draw and noise.
  • Smart options: Smart Connect from Anywhere.
  • Low profile indoors: Wall Mounts deliver quiet, even airflow.
  • Cold-weather capable: Heat pump performance designed for year-round use.
At-a-glance
Capacity
18,000 BTU (≈1.5 Ton)
Efficiency
Up to 21.0 SEER2
Zones
Up to 2 indoor units
Refrigerant
R410A

Watch: Overview

What’s included

  • (1) Outdoor condenser: OS-MSR18-230VO (18,000 Btu / 1.5 Ton)
  • Indoor units:

     2- Units of your Choice (Selected in the dropdown)

  • Remotes: Handheld Remote Controls Included with indoor units (THERMOSTAT NOT INCLUDED)
  • Mounting accessories for indoor units & manuals
  • Wi-Fi functionality via the ConnectLife Smartphone App

Key features

  • Remote control included
  • Smart Connect from Anywhere
  • Comfortable Sleep Mode
  • Turbo and Eco Modes
  • Multiple fan speeds
  • Timer
  • Louver auto swing
  • Self-clean mode
  • LED display

Comfort modes

  • Auto – chooses heat/cool to hold setpoint
  • Cool / Heat – direct seasonal control
  • Dry – dehumidify while maintaining temp
  • Sleep – 8-hour energy-saving profile
  • Timer – schedule on/off

Warranty

5-Year Compressor and 2-Year Parts (brand terms apply).

Registration and conditions may be required. See manufacturer warranty for details. Warranty Details

Tech specs — Indoor units (Wall Mount)

9,000 BTU — OS-M09SRW-230VI

Power source 208–230V, 1Ph, 60Hz
Voltage range 187–253 V
BTU rated 9,000
Indoor noise level (H/M/L) 39 / 35 / 30 dB(A)
Refrigerant piping (Liquid/Gas) 1/4" / 3/8"
Unit dimensions (W×H×D) 32.02 × 10.75 × 8.13 in
Packing dimensions (W×D×H) 39.38 × 13.19 × 6.38 in
Unit weight (Net/Gross) 19.84 / 24.25 lb
Manuals & documents

12,000 BTU — OS-M12SRW-230VI

Power source 208–230V, 1Ph, 60Hz
Voltage range 187–253 V
BTU rated 12,000
Indoor noise level (H/M/L) 39 / 35 / 30 dB(A)
Refrigerant piping (Liquid/Gas) 1/4" / 3/8"
Unit dimensions (W×H×D) 37.38 × 10.75 × 8.13 in
Packing dimensions (W×D×H) 39.38 × 13.19 × 6.38 in
Unit weight (Net/Gross) 19.84 / 24.25 lb
Manuals & documents

Tech specs — Outdoor condenser (OS-MSR18-230VO)

System type Multi-zone unit
Power source 208-230V, 1Ph, 60Hz
Voltage range 198–253 V
Cooling capacity 18,000 Btu/h
Heating capacity at 47°F 18,000 Btu/h
SEER2 21
EER2 12.5
HSPF2 (Region IV) 10.34
HSPF2 (Region V) 8.53
COP 3.45 W/W
Minimum circuit ampacity 21 A
Max fuse 30 A
Outdoor noise level 55 dB(A)
Outdoor air flow 1.85 ×10³ CFM
Refrigerant type R410A
Refrigerant piping (Liquid/Gas) 1/4" / 3/8"
Refrigerant precharge 25 oz
Additional refrigerant charge (1/4 or 3/8 line) 0.16 oz/ft
Max pipe length (each/total) 82 ft each / 164 ft total
Max height difference (indoor–outdoor) 15 ft
Operating temp (Cooling) 14–114.8 °F
Operating temp (Heating) -13–75.2 °F
Unit dimensions (W×H×D) 33-7/8 × 26-3/8 × 12-1/4 in
Packing dimensions (W×H×D) 39 × 17-3/4 × 28-3/4 in
Unit weight (Net/Gross) 116.8 / 125.6 lb
Manuals & documents

Verify line set length, charge, and breaker sizing per current installation manual.

Full description

Tap to expand

The Olmo Sierra multi-zone system delivers efficient, quiet heating and cooling for 2 rooms. Inverter technology right-sizes output to demand, helping lower energy use and noise. Choose from modes like Auto, Dry, and Sleep for seasonal comfort, and manage rooms individually with remote or the Smart Connect from Anywhere.

FAQs

Are these pre-charged?
Yes, the Outdoor Condenser is pre-charged with refrigerant

How do I activate warranty?
60 days from the point of Installation at Olmo Warranty or call 786-953-6706  EXT 3

How long is the warranty?
5-Years Compressor, 2 Years parts.

Is this system DIY?
We would not consider this a DIY system. Self-Install without a licensed HVAC Technician may void your manufacturer warranty. 

* Warranty terms vary by brand and region. Always review the manufacturer’s warranty and registration requirements.

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