| Refrigerant type | R454B |
| BTU rated | 12,000 |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 2.1 |
| Voltage range (V) | 187-253 |
| Controller | L1-12 |
| Refrigerant piping - liquid/gas side (inch) | 1/4"/3/8" |
| EER2 | 12.25 |
| SEER2 | 23 |
| Net/gross weight (lb) | 18.7/23.1 |
| Unit dimensions (WxDxH) | 32 1/16x10 5/8x8 7/16 |
| Packing dimensions (WxDxH) | 34 1/4x13 3/16x10 7/16 |
| Operation range - heating | 61F-86F |
| Operation range - cooling | 61F-86F |
| Minimum circuit ampacity (A) | 3 |
| Max fuse (A) | 5 |
| Indoor noise level (H/M/L) | 39/37/35 |
| Indoor air flow | 394/365/312/253 |
| ESP range | / |
| Drainage pipe diameter (inch) | 3/4" |
| Filter dimensions (WxDxH) (inch) | 11 15/16 x 1/2 x13 3/4 |
Overview
The OS-RM12SW-230VI is a 12,000 Btu/h indoor wall-mounted unit from OLMO's Multi-Sierra Series, designed to be combined with any OLMO Multi-Sierra outdoor unit as one zone of a multi-zone system. Smart Connect lets you control this zone independently from anywhere via the OLMO app.
This 208-230V, 1Ph, 60Hz unit uses R454B refrigerant, is rated up to 23 SEER2 with an EER2 of 12.25, and delivers 12,000 Btu/h within an operation range of 61°F-86°F.
Features
- Smart Connect Included, independent per-zone control
- Sleep Mode
- Turbo Mode
- Eco Mode
- Multiple Fan Speeds
- Timer
- Auto Swing Louvers
What's Included
- OS-RM12SW-230VI indoor wall-mounted unit
- Remote control
- Designed to combine with an OLMO Multi-Sierra outdoor unit (sold separately)
Specifications
| Refrigerant type | R454B |
| BTU rated | 12,000 |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 2.1 |
| Voltage range (V) | 187-253 |
| Controller | L1-12 |
| Refrigerant piping - liquid/gas side (inch) | 1/4"/3/8" |
| EER2 | 12.25 |
| SEER2 | 23 |
| Net/gross weight (lb) | 18.7/23.1 |
| Unit dimensions (WxDxH) | 32 1/16x10 5/8x8 7/16 |
| Packing dimensions (WxDxH) | 34 1/4x13 3/16x10 7/16 |
| Operation range - heating | 61F-86F |
| Operation range - cooling | 61F-86F |
| Minimum circuit ampacity (A) | 3 |
| Max fuse (A) | 5 |
| Indoor noise level (H/M/L) | 39/37/35 |
| Indoor air flow | 394/365/312/253 |
| ESP range | / |
| Drainage pipe diameter (inch) | 3/4" |
| Filter dimensions (WxDxH) (inch) | 11 15/16 x 1/2 x13 3/4 |
Details
Overview
The OS-RM12SW-230VI is a 12,000 Btu/h indoor wall-mounted unit from OLMO's Multi-Sierra Series, designed to be combined with any OLMO Multi-Sierra outdoor unit as one zone of a multi-zone system. Smart Connect lets you control this zone independently from anywhere via the OLMO app.
This 208-230V, 1Ph, 60Hz unit uses R454B refrigerant, is rated up to 23 SEER2 with an EER2 of 12.25, and delivers 12,000 Btu/h within an operation range of 61°F-86°F.
Features
- Smart Connect Included, independent per-zone control
- Sleep Mode
- Turbo Mode
- Eco Mode
- Multiple Fan Speeds
- Timer
- Auto Swing Louvers
What's Included
- OS-RM12SW-230VI indoor wall-mounted unit
- Remote control
- Designed to combine with an OLMO Multi-Sierra outdoor unit (sold separately)
Submittals
Frequently Asked Questions
Who do you sell to?
We sell exclusively to licensed HVAC contractors and industry professionals. Professional installation by a licensed technician is recommended to ensure proper installation, system performance, code compliance, and maximum manufacturer warranty coverage.
What brands do you carry?
We specialize in high performance brands like Cooper and Hunter along with ductless and mini split systems that meet California low GWP and energy compliance standards. We also stock trusted installation and service brands including NAVAC, RectorSeal, Fieldpiece, Armbridge, Olmo, and Diversitech.
Do you stock equipment locally?
Yes. We have a ton of equipment and accessories in stock across the Bay Area and Sacramento, available for local pickup or freight shipping. More locations coming soon.
Can I get help sizing a system?
Absolutely. We help contractors with equipment selection, line set sizing, refrigerant matchups, and other technical questions. Reach out via phone or email for support.
Do you offer volume discounts?
Yes. We offer contractor pricing and volume breaks for bulk orders. Reach out directly if you're planning a multi-unit install or need project pricing.
Do you help with warranty claims?
Yes, you will need to first reach out to the Cooper & Hunter Technical Support line 1 800-977-0722 to go through troubleshooting, and if it is determined to be a defective unit, we will work with the manufacturer and you as the customer to source you a replacement unit under warranty. If it is determined to need replacement parts, you as the customers will work with Cooper & Hunter to source replacement parts.
Can I buy online?
Yes. As long as you have a licensed contractor account with us, you can place orders online for delivery or pickup at any of our branch locations.
What makes CoolMan different?
We’re not just a supplier — we’re a partner. We know the ductless business, we understand California codes, and we move fast to help you win jobs and keep clients happy.
