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2 Zone OLMO Sierra Multi-Zone, 1.5 Ton Air Conditioner, 18,000 BTU Dual Zone with 9k+12k BTU Wall Mount Ductless Mini Split A/C and Heater, R410A, 21.3 SEER Inverter Heat Pump, 230V, Dual Head, Choose your Installation Kits!
Summary
The OLMO Sierra Multi-Zone can be used in multiple combinations with Olmo Multi-Sierra Wall Mounted Units in up to 4 independent zones. Featuring inverter technology, this heat pump offers up to 21 SEER2 ratings, delivering efficient cooling and heating capabilities. With Smart Connect included, you can independently control this unit from anywhere using the APP for added comfort and convenience. A remote control is also included, offering features such as Sleep, Turbo, and Eco modes, Multiple Fan Speeds, Timer, and Auto Swing Louvers.
Important
All units must be installed by a licensed HVAC professional for the warranty to be valid. Registration is required within 60 days of installation and can be completed online or by phone. The installation kit is necessary for the system to function. Ensure that you have selected the desired installation kit above. This kit comes with Pre-Flared 99% Copper Lines, Data Communication Wires, PVC Drainage Attachment, Wrapping Bands, etc.
What's Included
- Indoor Units OS-M18SRW-230VI (18,000 BTU OLMO Sierra Indoor Wall Mount Unit)
- 3X Indoor Units OS-M12SRW-230VI (12,000 BTU OLMO Sierra Indoor Wall Mount Unit)
- Indoor Units OS-M09SRW-230VI (9,000 BTU OLMO Sierra Indoor Wall Mount Unit)
- Optional, Pre-Flared 99% Copper Installation Kit (16ft, 25ft or 50ft.) MUST BE SELECTED ABOVE.
- Wireless Remote Controls
- Installation Manual
- User’s Manual
- Manufacturer Warranty
Other OLMO 18,000 BTU Combinations
Model |
Zone Configuration Options (BTU)
|
OS-MSR18-230VO
|
9K + 9K |
9K + 12K | |
12K + 12K |
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Warranty
- 5 year compressor limited warranty
- 2 year parts limited warranty (must be installed by a licensed HVAC technician)
- 1 year remote control
Technical Information
Model Number: OS-M12SRW-230VI (12,000 BTU Indoor Wall Mount)
Specification | Value |
Voltage Range (V) | 187–253 |
Packing Dimensions (W x D x H) | 39.38 x 13.19 x 6.38 |
BTU Rated | 12,000 |
Unit Net / Gross Weight (lbs) | 19.84 / 24.25 |
Unit Dimensions (W x H x D) | 37.38 x 10.75 x 8.13 |
Power Source | 208-230V, 1Ph, 60Hz |
Indoor Noise Level (H / M / L) (dB) | 39 / 35 / 30 |
Model Number: OS-M09SRW-230VI (9,000 BTU Indoor Wall Mount)
Specification | Value |
Voltage Range (V) | 187–253 |
Packing Dimensions (W x D x H) |
39.38 x 13.19 x 6.38
|
BTU Rated | 9,000 |
Unit Net / Gross Weight (lbs) | 19.84 / 24.25 |
Unit Dimensions (W x H x D) |
32.02 x 10.75 x 8.13
|
Power Source |
208-230V, 1Ph, 60Hz
|
Indoor Noise Level (H / M / L) (dB) | 39 / 35 / 30 |
Model Number: OS-MSR18-230VO (42,000 BTU Indoor Wall Mount)
Specification | Value |
Voltage Range (V) | 198~253 |
System Type | Multi-zone unit |
SEER2 (up to) | 21 |
Refrigerant Type | R410A |
Refrigerant Piping Liquid/Gas Side (inch) | 1/4" / 3/8" |
Packing Dimensions (W x D x H) |
39 x 17-3/4 x 28-3/4
|
Max. Pipe Length (ft) | 82 / 164 |
HSPF2-5 | 8.53 |
HSPF2-4 | 10.34 |
EER2 (up to) | 12.5 |
Unit Net / Gross Weight (lbs) | 116.8 / 125.6 |
Unit Dimensions (W x H x D) |
33-7/8 x 26-3/8 x 12-1/4
|
Refrigerant Precharge (ft) | 25 |
Power Source |
208-230V, 1Ph, 60Hz
|
Outdoor Noise Level (dB) | 55 |
Outdoor Air Flow (m³/min or CFM)* | 1.85 |
Minimum Circuit Ampacity (A) | 21 |
Max. Fuse (A) | 30 |
Max Height Difference (Indoor ↔ Outdoor) (ft) | 15 |
Heating Capacity at 47°F (BTU) | 18,000 |
COP (Coefficient of Performance) | 3.45 |
Cooling Capacity (Nominal BTU) | 18,000 |
Ambient Temperature - Heating (°F) | -13 ~ 75.2 |
Ambient Temperature - Cooling (°F) | 14 ~ 114.8 |
Additional Refrigerant Charge – 3/8" Liquid Line (oz/ft) | 0.16 |
Additional Refrigerant Charge – 1/4" Liquid Line (oz/ft) | 0.16 |
Certifications
Performance Data/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
Manuals & Downloads
Brackets and Concrete Pads
-
18"x40"x4" Concrete Pads
Regular price $69.00Sale price $69.00 Regular priceUnit price per -
Heavy-Duty Mini Split Ground Stand with Load Capacity up to 500LBS, Condenser Bracket for 9000-36000 BTU Ductless Air Conditioners and Heat Pump, Inverter Systems
Regular price $129.99Sale price $129.99 Regular priceUnit price per -
Heavy-Duty Mini Split Ground Stand with Load Capacity up to 770LBS, Condenser Bracket for 9000-60000 BTU Ductless Air Conditioners and Heat Pumps, Inverter Systems
Regular price $169.99Sale price $169.99 Regular priceUnit price per -
Heavy-Duty Mini Split Wall Bracket with Load Capacity up to 480LBS, Condenser Bracket for High BTU Ductless Air Conditioners and Heat Pump, Inverter Systems
Regular price $59.97Sale price $59.97 Regular priceUnit price per -
Mini Split Compressor Bracket for 6,000 - 28,000 BTU
Regular price $39.97Sale price $39.97 Regular priceUnit price per
Line covers
-
12FT PVC Decorative Line Set Cover Kit for Ductless Mini Split Air Conditioners, Heat Pumps, and Inverters systems.
Regular price $73.00Sale price $73.00 Regular priceUnit price per -
16.5FT Brown PVC Decorative Line Set Cover Kit for Ductless Mini Split Air Conditioners, Heat Pumps, and Inverters systems.
Regular price $89.00Sale price $89.00 Regular priceUnit price per
We will prepare your order within 24 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
SMALLWARES INFORMATION: Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
We will prepare your order within 24-48 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map.Â

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IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
Â
SMALLWARES INFORMATION:Â Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
Â
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
Cooper & Hunter
DETAILED PRODUCT BOOKLETS FOR THIS PRODUCT:
Olivia Series Booklet
Multi-Zone Booklet
Specification Table
Quick-Start Guide
Installation Manual
General Manufacturing Information
Rebates




