OLMO - R454B - 23.0 - 2 zone - Wall Mount - Sierra - 208-230V
2-Zone 27,000 BTU (2.25 Ton) R454B – Wall Mount AC & Heat Pump
2-Zone 27,000 BTU (2.25 Ton) R454B – Wall Mount AC & Heat Pump
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Olmo Sierra 2-Zone | 27,000 BTU Multi-Zone, 230V (R454B) – Wall Mount
Multi-room comfort for 2 spaces. Wall Mount indoors, inverter heat pump outdoors, optional smart control, and up to 23.0 SEER2 efficiency.
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.
27,000 BTU (≈2.25 Ton)
Up to 23.0 SEER2
Up to 2 indoor units
R454B
Watch: Overview
What’s included
- (1) Outdoor condenser: OS-RMS27-230VO (27,000 Btu / 2.25 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-RM09SW-230VI
| Power source | 208-230V, 1Ph, 60Hz |
|---|---|
| Voltage range | 187–253 V |
| SEER2 up to | 25 |
| EER2 up to | 13.65 |
| BTU rated | 9,000 |
| Indoor air flow (CFM) | 382/341/294/247 |
| Indoor noise level H/M/L | 39/37/35 dB(A) |
| Dehumidification | 1.6 Pnt/H |
| Refrigerant type | R454B |
| Refrigerant piping (Liquid/Gas) | 1/4" / 3/8" |
| ESP range | / |
| Drainage pipe diameter | 3/4" |
| Unit dimensions (W×H×D) | 32 1/16 × 10 5/8 × 8 7/16 |
| Packing dimensions (W×D×H) | 34 1/4 × 13 3/16 × 10 7/16 |
| Filter dimensions (W×D×H) | 11 15/16 × 1/2 × 13 3/4 |
| Controller | L1-12 |
| Minimum circuit ampacity | 3 A |
| Max fuse | 5 A |
| Operation range — Cooling | 61–86 °F |
| Operation range — Heating | 61–86 °F |
| Unit weight (Net/Gross) | 18.7 / 23.1 |
- R32/R454B Product Leaflet
- SIERRA Wi-Fi User Manual (R32)
- Indoor Unit Installation Manual (R454B)
- Outdoor Unit User Manual (R454B)
- Remote Control Manual
12,000 BTU — OS-RM12SW-230VI
| Power source | 208-230V, 1Ph, 60Hz |
|---|---|
| Voltage range | 187–253 V |
| SEER2 up to | 23 |
| EER2 up to | 12.25 |
| BTU rated | 12,000 |
| Indoor air flow (CFM) | 394/365/312/253 |
| Indoor noise level H/M/L | 39/37/35 dB(A) |
| Dehumidification | 2.1 Pnt/H |
| Refrigerant type | R454B |
| Refrigerant piping (Liquid/Gas) | 1/4" / 3/8" |
| ESP range | / |
| Drainage pipe diameter | 3/4" |
| Unit dimensions (W×H×D) | 32 1/16 × 10 5/8 × 8 7/16 |
| Packing dimensions (W×D×H) | 34 1/4 × 13 3/16 × 10 7/16 |
| Filter dimensions (W×D×H) | 11 15/16 × 1/2 × 13 3/4 |
| Controller | L1-12 |
| Minimum circuit ampacity | 3 A |
| Max fuse | 5 A |
| Operation range — Cooling | 61–86 °F |
| Operation range — Heating | 61–86 °F |
| Unit weight (Net/Gross) | 18.7 / 23.1 |
- R32/R454B Product Leaflet
- SIERRA Wi-Fi User Manual (R32)
- Indoor Unit Installation Manual (R454B)
- Outdoor Unit User Manual (R454B)
- Remote Control Manual
18,000 BTU — OS-RM18SW-230VI
| Power source | 208-230V, 1Ph, 60Hz |
|---|---|
| Voltage range | 187–253 V |
| SEER2 up to | 21 |
| EER2 up to | 12.95 |
| BTU rated | 18,000 |
| Indoor air flow (CFM) | 647/588/482/382 |
| Indoor noise level H/M/L | 45/41/39 dB(A) |
| Dehumidification | 2.6 Pnt/H |
| Refrigerant type | R454B |
| Refrigerant piping (Liquid/Gas) | 1/4" / 1/2" |
| ESP range | / |
| Drainage pipe diameter | 3/4" |
| Unit dimensions (W×H×D) | 42 3/4 × 12 3/8 × 9 5/16 |
| Packing dimensions (W×D×H) | 46 1/16 × 15 3/8 × 12 7/16 |
| Filter dimensions (W×D×H) | 16 1/8 × 9/16 × 15 1/8 |
| Controller | L1-12 |
| Minimum circuit ampacity | 3 A |
| Max fuse | 5 A |
| Operation range — Cooling | 61–86 °F |
| Operation range — Heating | 61–86 °F |
| Unit weight (Net/Gross) | 30.9 / 37.5 |
Tech specs — Outdoor condenser (OS-RMS27-230VO)
| Power supply | 208/230V, 1Ph, 60Hz |
|---|---|
| Cooling capacity | 27,000 Btu/h |
| Heating capacity | 27,000 Btu/h |
| SEER2 | 23.0 |
| EER2 | 12.85 |
| HSPF2 | 10.0 |
| COP2 | 3.60 W/W |
| Minimum circuit ampacity | 25 A |
| Max fuse | 40 A |
| Outdoor airflow (Hi) | 3357 CFM |
| Outdoor noise level | 62 dB(A) |
| Refrigerant | R454B, factory charge 76.2 oz |
| Refrigerant piping (Liquid/Gas) | 1/4" / 3/8" |
| Max refrigerant pipe length | 82 ft each / 230 ft total |
| Operating temp (Cooling) | 5–125 °F |
| Operating temp (Heating) | -13–75 °F |
| Unit dimensions (W×H×D) | 38-3/8 × 32-7/8 × 14-1/8 in |
| Packing dimensions (W×H×D) | 43-3/4 × 37-3/4 × 18-1/8 in |
| Unit weight (Net/Gross) | 160.6 / 183.2 lb |
- SIERRA Wi-Fi User Manual (R32)
- R32/R454B Product Leaflet
- Indoor Unit Installation Manual (R454B)
- Outdoor Unit User Manual (R454B)
- Remote Control Manual
Verify breaker, wire gauge, and line-length/charge rules in the current installation manuals.
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.
