Olmo Sierra 4-Zone | 36,000 BTU Multi-Zone, 230V (R410A) – Wall Mount

Multi-room comfort for 4 spaces. Wall Mount indoors, inverter heat pump outdoors, optional smart control, and up to 21.0 SEER2 efficiency.

36,000 BTU Up to 4  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 4 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


Capacity36,000 BTU (≈3.00 Ton)

EfficiencyUp to 21.0 SEER2

ZonesUp to 4 indoor units

RefrigerantR410A

Watch: Overview

What’s included

• (1) Outdoor condenser: OS-MSR36-230VO (36,000 Btu / 3.00 Ton)
  


• Indoor units:

     4- 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

• Indoor Unit User & Installation Manual


• Remote Control Manual


• Wi-Fi Manual


• Multi Sierra Product Leaflet (2024)


• OLMO Catalog (2024)

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

• Indoor Unit User & Installation Manual


• Remote Control Manual


• Wi-Fi Manual


• Multi Sierra Product Leaflet (2024)


• OLMO Catalog (2024)

18,000 BTU — OS-M18SRW-230VI

Power source	208–230V, 1Ph, 60Hz
Voltage range	187–253 V
BTU rated	18,000
Indoor noise level (H/M/L)	45 / 41 / 37 dB(A)
Refrigerant piping (Liquid/Gas)	1/4\" / 1/2\"
Unit dimensions (W×H×D)	48 × 12.63 × 9.25 in
Packing dimensions (W×D×H)	51.75 × 15.44 × 12.50 in
Unit weight (Net/Gross)	31.97 / 37.48 lb

Manuals & documents

• Indoor Unit User & Installation Manual


• Remote Control Manual


• Wi-Fi Manual


• Multi Sierra Product Leaflet (2024)


• OLMO Catalog (2024)

Tech specs — Outdoor condenser (OS-MSR36-230VO)

System type	Multi-zone unit
Power source	208–230V, 1Ph, 60Hz
Voltage range	198–253 V
Cooling capacity	32,000 Btu/h (nominal)
Heating capacity at 47°F	36,000 Btu/h
SEER2	21
EER2	12.5
HSPF2 (Region IV)	11.05
HSPF2 (Region V)	9.12
COP	3.37 W/W
Minimum circuit ampacity	32.2 A
Max fuse	50 A
Outdoor noise level	59 dB(A)
Outdoor air flow	3.41 ×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)	66 ft each / 246 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)	37-3/8 × 41-3/8 × 13-3/8 in
Packing dimensions (W×H×D)	43-3/4 × 18-1/8 × 47-1/4 in
Unit weight (Net/Gross)	188.5 / 220.5 lb

Manuals & documents

• Outdoor Unit User & Installation Manual


• Multi Sierra Product Leaflet (2024)


• Submittal — OS-MSR36-230VO


• OLMO Catalog (2024)

Verify breaker, wire gauge, and refrigerant charge per the official installation manual.

Full description

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.