OLMO Sierra 24,000 BTU Single Zone Wall Mount, 230V, R32 - Ductless Mini Split Air Conditioner Heat Pump
OLMO5-Yr WarrantySKU: OS-SR24-230VO24WM-16ft
Product specifications
- Voltage
- 230V
- Type
- Wall Mount
- Freon
R32
Choose Your Configuration
The factory kit is already in the box. “Additional” kits are longer line sets sold with the system.
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FREE Delivery
Ships from the nearest of our three US warehouses, leaves in 1–2 business days. Shipping policy
OLMO · WALL MOUNT
Built for year-round comfort
OS-SR24-230VO24WM-16ft
Product Description
The OLMO Sierra 24,000 BTU (2 Ton) single-zone wall-mount mini split is an air conditioner and heat pump running on R32 refrigerant with a 19.5 SEER2 inverter compressor on 208/230V power. A 16 ft copper line set and communication cable ship in the box, Smart Connect Wi-Fi app control is included, and the Blue Fin coated condenser resists corrosion. Heating operation continues down to −5°F outdoor ambient.
6 Modes for Maximum Comfort
Engineered to adapt to every season, every room, every need.
Maintain a comfortable indoor temperature by automatically switching between heating and cooling as needed. Ideal for year-round use.
WHEREVER YOU ARE
Control your comfort, your way
- Easy scheduling & timer
- Multiple ways to control your comfort
- Smart geo location
- In-app support & assistance
- Voice control
WARRANTY
BACKED BY OLMO COMFORT
Industry-leading protection on every unit
Compressor: 5-year coverage
With product registration after professional installation.
Parts & components: 3-year coverage
All major components and refrigerant circuit parts.
Technical Specifications
Series Comparison Table
Technical specifications for every model in the series — this product is one of them.
Indoor Models
| Specification | OS-M09SRW-230VI | OS-M12SRW-230VI | OS-M18SRW-230VI | OS-M24SRW-230VI |
|---|---|---|---|---|
| Power Supply V-Ph-Hz | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 |
| Capacity Btu/h | 9000 | 12000 | 18000 | 23400 |
| Rated Capacity Btu/h | 9500 | 13000 | 19000 | 26000 |
| Output Power W | 25 | 25 | 35 | 35 |
| Rated Current A | 0.11 | 0.11 | 0.17 | 0.17 |
| Indoor Air Flow CFM | 341 | 365 | 647 | 706 |
| Indoor Noise Level (Hi/Mi/Lo) dB(A) | 39/35/30 | 39/35/30 | 45/41/37 | 47/45/42 |
| Net Dimensions (WxHxD) in | 32.02x10.75x8.13 | 37.38x10.75x8.13 | 48x12.63x9.25 | 48x12.63x9.25 |
| Packing (WxHxD) in | 39.38x13.19x6.38 | 39.38x13.19x6.38 | 51.75x15.44x12.50 | 51.75x15.44x12.50 |
| Net/Gross Weight lbs | 19.84 / 24.25 | 19.84 / 24.25 | 31.97 / 37.48 | 31.97 / 37.48 |
| Liquid Side / Gas Side in | 1/4" / 3/8" | 1/4" / 3/8" | 1/4" / 1/2" | 3/8" / 5/8" |
Outdoor Models
| Specification | OS-MSR18-230VO | OS-MSR24-230VO | OS-MSR36-230VO | OS-MSR42-230VO |
|---|---|---|---|---|
| Power Supply V-Ph-Hz | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 |
| Capacity Btu/h | 18000 | 24000 | 32000 | 42000 |
| EER2 Btu/h | 12.5 | 12.5 | 12.5 | 10.5 |
| SEER2 Btu/h | 21.0 | 22.0 | 21.0 | 20.0 |
| Rated Capacity Btu/h | 18000 | 24000 | 36000 | 42000 |
| HSPF2 Btu/h | 9.50 | 9.05 | 9.00 | 8.95 |
| COP2 W/W | 3.45 | 3.66 | 3.37 | 3.17 |
| Minimum Circuit Ampacity A | 23 | 25 | 32.2 | 35 |
| Max Fuse A | 30 | 30 | 50 | 50 |
| Outdoor Air Flow (Hi) CFM | 1850 | 2350 | 3411 | 3411 |
| Outdoor Side Noise Level dB(A) | 55 | 55 | 59 | 63 |
| Dimensions (WxHxD) in | 33.88×26.38×12.25 | 37.38×33×13.38 | 37.38×41.38×13.38 | 37.38×41.38×13.38 |
| Outdoor Unit Packing (WxHxD) in | 39×17.75×28.75 | 43.75×18.13×36.25 | 43.75×18.13×47.25 | 43.75×18.13×47.25 |
| Net/Gross Weight lbs | 116.8/125.6 | 158.7/169.5 | 188.5/220.5 | 198.4/224.5 |
| Refrigerant Type/Quantity oz | R410A/63.49 | R410A/81.13 | R410A/105.82 | R410A/120 |
| Refrigerant Precharge ft | 50 | 75 | 98 | 98 |
| Liquid Side / Gas Side in | 1/4" / 3/8" | 1/4" / 3/8" | 1/4" / 3/8" | 1/4" / 3/8" |
| Max Refrigerant Pipe Length Each/Total ft | 82/164 | 66/197 | 66/246 | 66/262 |
| Outdoor (Cooling) °F | 14~114.8 | 14~114.8 | 14~114.8 | 14~114.8 |
| Outdoor (Heating) °F | -13~75.2 | -13~75.2 | -13~75.2 | -4~75.2 |
Manufacturer Technical Support
Reach your brand's tech support team directly
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The OLMO Sierra 24,000 BTU (2 Ton) single-zone wall-mount mini split is an air conditioner and heat pump running on R32 refrigerant with a 19.5 SEER2 inverter compressor on 208/230V power. A 16 ft copper line set and communication cable ship in the box, Smart Connect Wi-Fi app control is included, and the Blue Fin coated condenser resists corrosion. Heating operation continues down to −5°F outdoor ambient.
Key Features
- 24,000 BTU cooling / 24,000 BTU heating — inverter compressor, 208/230V
- 19.5 SEER2 / 10.6 EER2 / 8.5 HSPF2 — current R32-generation ratings
- 16 ft line set + communication cable INCLUDED (25 ft or 50 ft kit optional)
- Smart Connect Wi-Fi included — app control + IR remote
- Heats to −5°F outdoor ambient; cooling operation 5–118°F
- Blue Fin coated condenser — corrosion protection
- Self-clean, Turbo/Eco, Sleep mode, auto-swing louver, LED display
- UL Listed, AHRI Certified — distributed in the USA by Comfortside LLC
Included in Your Order
- Outdoor unit (condenser): OS-SR24-230VO — 24,000 BTU, pre-charged for up to 24.6 ft of line
- Indoor unit (air handler): OS-24SRW-230VI, wall mount, with IR remote control
- 16 ft installation kit in the box (copper line set + communication cable) — or choose a 25 ft / 50 ft kit
- Smart Connect Wi-Fi app control
Specifications — OS-24SRW-230VI + OS-SR24-230VO
| Power Supply | 208/230V, 1Ph, 60Hz |
| Cooling / Heating Capacity | 24,000 / 24,000 Btu/h |
| SEER2 / EER2 | 19.5 / 10.6 |
| HSPF2 (Region IV / V) / COP | 8.5 / 8.0 / 3.3 |
| Minimum Circuit Ampacity (MCA) | 21 A |
| Max. Fuse / Breaker | 35 A |
| Indoor Air Flow (Turbo/Hi/Mid/Lo/Silent) | 706 / 706 / 647 / 559 / 441 CFM |
| Indoor Noise Level | 50 / 48 / 43 / 41 dB(A) |
| Indoor Unit Dimensions (W×D×H) | 42.5 × 12.37 × 9 in |
| Indoor Unit Net / Gross Weight | 29.8 / 37.5 lbs |
| Outdoor Air Flow | 647 CFM |
| Outdoor Noise Level | 60 dB(A) |
| Outdoor Unit Dimensions (W×D×H) | 33.88 × 25.5 × 12.2 in |
| Outdoor Unit Weight | 101.4 / 110.2 lbs |
| Refrigerant Type / Charge | R32 / 47.6 oz |
| Design Pressure | 620 PSIG |
| Pre-charged Line Length | up to 24.6 ft |
| Line Set (Liquid / Gas) | 3/8" / 5/8" |
| Max. Pipe Length | 98.4 ft |
| Max. Elevation Difference | 49.2 ft |
| Operating Range — Cooling / Heating | 5–118°F / −5–75°F outdoor ambient |
OLMO Sierra Single-Zone (R32) Lineup
| Capacity | Model (Indoor + Outdoor) | Voltage | SEER2 |
| 9,000 BTU | OS-09SRW-115VI + OS-SR09-115VO | 115V | 20.0 |
| 12,000 BTU | OS-12SRW-115VI + OS-SR12-115VO | 115V | 18.0 |
| 9,000 BTU | OS-09SRW-230VI + OS-SR09-230VO | 208/230V | 22.5 |
| 12,000 BTU | OS-12SRW-230VI + OS-SR12-230VO | 208/230V | 20.0 |
| 18,000 BTU | OS-18SRW-230VI + OS-SR18-230VO | 208/230V | 21.0 |
| 24,000 BTU | OS-24SRW-230VI + OS-SR24-230VO | 208/230V | 19.5 |
| 36,000 BTU | OS-R36SRW-230VI + OS-RSR36-230VO | 208/230V | 20.0 |
Warranty & Support
Covered by OLMO’s 5-year compressor / 2-year parts warranty — installation by a licensed HVAC professional and registration at olmo-comfort.com within 60 days required. OLMO is distributed in the USA by Comfortside LLC, so replacement parts and English-speaking support are readily available.
Questions about sizing or line-set length? Our HVAC specialists will help you pick the right system before you order.
Frequently Asked Questions
What’s included in this system?
A complete single-zone system: the indoor unit and its matching outdoor condenser. Choose a line-set kit length at checkout, or supply your own.
What size room does it suit?
It is rated at 24,000 BTU — size it to your room’s square footage and insulation for the best match.
Does it heat as well as cool?
Yes — it is an inverter heat pump that both cools and heats. See the specifications for this model’s heating range.
What refrigerant does it use?
R32. The system ships factory pre-charged; a licensed installer adjusts the charge for your line length.
Who should install it?
A licensed HVAC professional — required for the refrigerant, electrical, and startup work, and to keep the manufacturer warranty valid. Many customers buy the equipment here and hire a local installer.
What warranty does it come with?
It is backed by OLMO’s limited manufacturer warranty — 5-year compressor, 2-year parts, and 1-year remote; professional installation and registration at olmo-comfort.com within 60 days are required to keep coverage valid.