OLMO - R410A - 20.0 - 4 zone - Wall Mount - Sierra - 208-230V
4-Zone 42,000 BTU (3.5 Ton) R410A – Wall Mount AC & Heat Pump
4-Zone 42,000 BTU (3.5 Ton) R410A – Wall Mount AC & Heat Pump
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Olmo Sierra 4-Zone | 42,000 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 20.0 SEER2 efficiency.
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.
42,000 BTU (≈3.5 Ton)
Up to 20.0 SEER2
Up to 4 indoor units
R410A
Watch: Overview
What’s included
- (1) Outdoor condenser: OS-MSR42-230VO (42,000 Btu / 3.5 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 |
- 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 |
- 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 |
- Indoor Unit User & Installation Manual
- Remote Control Manual
- Wi-Fi Manual
- Multi Sierra Product Leaflet (2024)
- OLMO Catalog (2024)
24,000 BTU — OS-M24SRW-230VI
| Power source | 208–230 V, 1 Ph, 60 Hz |
|---|---|
| BTU rated | 23,400 |
| Indoor air flow (CFM) | 706 |
| Indoor noise level (H/M/L) | 47 / 45 / 42 dB(A) |
| Refrigerant piping (Liquid / Gas) | 3/8″ / 5/8″ |
| Unit dimensions (W × H × D) | 42 ¾ × 12 ⅜ × 9 5⁄16 in |
| Packing dimensions (W × D × H) | 46 ¹⁄₁₆ × 15 ⅜ × 12 ⁷⁄₁₆ in |
| Unit weight (Net / Gross) | 31.97 / 37.48 lb |
| Controller | L1-12 |
- No individual manuals published yet for this model. Refer to the OLMO Multi Sierra Indoor Installation Manual and 2024 Catalog for specifications and wiring details.
Tech specs — Outdoor condenser (OS-MSR42-230VO)
| Power source | 208–230V, 1Ph, 60Hz |
|---|---|
| Voltage range | 198–253 V |
| Cooling capacity (nominal) | 42,000 Btu/h |
| Heating capacity at 47°F | 42,000 Btu/h |
| SEER2 | 20 |
| EER2 | 10.5 |
| COP | 3.17 W/W |
| Minimum circuit ampacity | 35 A |
| Max fuse | 50 A |
| Outdoor noise level | 63 dB(A) |
| Refrigerant type | R410A |
| 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) | 198.4 / 224.5 lb |
Verify breaker sizing, wire gauge, and installation parameters per the latest OLMO installation manual for this model.
Full description
Tap to expand
The Olmo Sierra multi-zone system delivers efficient, quiet heating and cooling for 4 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.
