OLMO Sierra 24,000 BTU Indoor Wall Mount, 230V, R32 - Ductless Mini Split Air Conditioner Heat Pump | 16FT
OLMO5-Yr Warranty
Product specifications
| Brand | |
|---|---|
| Voltage | |
| SEER | |
| WiFi | |
| Type | |
| Freon | |
| Compressor |
⛔ Wait! This is an Individual Component To build a working system, this unit must match your other equipment in two ways:
- Same Brand Only: Only pair with other same Brand and Series.
- Same Refrigerant: Both units must use the exact same gas type (R454B, R32, or R410A).
Mixing different brands or refrigerant types will cause the system to fail and void your warranty.
Please note that all delivery dates and estimated transit times are approximate and are not guaranteed. Delivery times may vary due to carrier delays, weather, holidays, peak shipping periods, or other circumstances beyond our control. How delivery dates are calculated
Pickup available at Medley Warehouse
Usually ready in 24 hours
Mon–Fri, 9:00 AM – 4:30 PM
Questions about this system?
Answers in seconds — tap a question below
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Sized for about the room's square footage at ~20 BTU per sq ft. Rule of thumb: ~20 BTU per sq ft, and 12,000 BTU = 1 ton (this unit is 24,000 BTU (2-ton)). Ceiling height, insulation, sun and climate shift that — if you're between sizes, size up for hot/humid rooms. Not sure? We'll confirm the right BTU for your space.
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12,000 BTU = 1 ton — "tons" is just the older way of stating capacity. So 24,000 BTU = 2 tons, 36,000 = 3 tons, and so on. This system is 24,000 BTU (2-ton). BTU tells you the capacity; SEER2 tells you the efficiency.
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It uses R32 — an efficient, lower-GWP refrigerant that's now the industry standard on modern mini splits. The outdoor unit ships pre-charged for a standard line set, so most installs need no extra refrigerant; your licensed, EPA-608-certified installer verifies the charge and tops it off if your line set is longer.
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Rated SEER2 19.5 — a strong efficiency number, and the higher it is the lower your energy bills. Its inverter compressor ramps up and down instead of cycling on/off, so it holds the temperature steadily, runs quietly, and uses less power than a standard AC or window unit.
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Needs a dedicated 230V circuit, like a large household appliance, so it can deliver full capacity to larger rooms and multi-zone setups. Your licensed HVAC installer or electrician sets up the correct breaker and disconnect to meet local electrical code.
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Yes — a big upgrade. It's far more efficient (inverter, SEER2 19.5) and much quieter, since the compressor sits outside instead of in your window or on the floor. It mounts permanently, doesn't block a window, and heats as well as cools year-round. Higher upfront cost, but lower bills and a longer lifespan.
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Yes to all three. It's an inverter heat pump — cools in summer, heats in winter (even in the cold), far more efficiently than electric heaters. A Dry mode also pulls out humidity, so rooms feel cooler and less muggy.
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Yes — WiFi is included, so you can set schedules, change the temperature, and even turn it on before you get home, all from the mobile app (and pair it with voice assistants). A standard remote is included too.
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Ships as a complete set: OS-24SRW-230VI. Everything arrives together — check the photos and specs for the full kit.
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It should be installed by a licensed, EPA-608-certified HVAC professional — we don't recommend DIY installation. Handling refrigerant requires EPA Section 608 certification under U.S. law, and professional installation keeps the system safe, code-compliant, and your manufacturer warranty valid.
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Yes — you get full inverter heat-pump technology and the same core features as premium brands without paying for the name, which is how we keep prices low. Shipping is free on U.S. orders over $300, and our team can help with sizing and support.
Why buy this mini split from MiniSplitsForLess
- Free Shipping over $300Ships free to the lower 48 states — flat rate, no surprises at checkout.
- USA-Based Expert SupportReal U.S. HVAC pros help with BTU sizing, refrigerant and install questions.
- Genuine Units & Full WarrantyBrand-new, authorized-dealer equipment backed by the full manufacturer warranty.
- Fast Nationwide ShippingIn stock and ready to ship from U.S. warehouses across all 48 states.
What Stands Out
Sleek Wall-Mount Design
A slim, quiet indoor head mounts high on the wall of heating & cooling — modern looks with whisper-quiet operation.
Inverter Efficiency — SEER2 19.5
A variable-speed inverter compressor ramps to match the load instead of cycling on/off, holding SEER2 19.5 on 230V — steady comfort with noticeably lower energy bills.
Smart Wi-Fi Control
Wi-Fi is included — set schedules and adjust the temperature from your phone anywhere, or pair with Alexa & Google Home.
Sierra Wall Mount
OLMO's Sierra Series is a versatile HVAC solution that provides efficient heating and cooling for multiple rooms, featuring advanced inverter technology for precise temperature control and significant energy savings. Using eco-friendly R32 refrigerant, the system delivers reliable performance with minimal environmental impact. Ideal for both residential and commercial applications, the Sierra Series combines quiet operation, flexible installation, and user-friendly controls, making it a perfect choice for maintaining year-round comfort across multiple zones with one efficient system.
Warranty and Tech Support Info
Model OS-24SRW-230VI
By selecting OLMO products for your home or business, you’ll receive expert technical support from heating and cooling specialists, including access to product manuals, troubleshooting guides and warranty information.
Warranty terms: the manufacturer provides a Limited Warranty of 5 years for the compressor and 2 years for parts.
Warranty terms
Energy Efficiency
Cooper&Hunter’s Inverter Technology maximizes efficiency and reduces energy costs by adjusting the compressor speed to your specific needs. Experience unparalleled comfort, quieter operation, and longer equipment lifespan. Choose Cooper&Hunter for cutting-edge HVAC solutions that deliver optimal performance and reliability.
Main Features
OLMO's Sierra Series delivers efficient room-by-room comfort with advanced inverter technology for precise temperature control. Its eco-friendly R32 refrigerant reduces environmental impact, while quiet operation ensures minimal disruption. With flexible installation options, sleek design, and reliable heating and cooling, it’s the perfect solution for modern multi-zone climate control needs.
Technical Specifications
Indoor Unit Specs
| Model | OS-24SRW-230VI |
|---|---|
| Net/Gross Weight | 29.8/37.5 lb |
| Power Supply | 208-230V, 1Ph, 60Hz |
| Maximum Fuse Size | 35 A |
| Min. Circuit Ampacity | 21 A |
| Copper Line Size (Liquid/Gas) | 3/8"/5/8" |
| Noise Level (Hi/Med/Lo) | 50/48/43/41 dB |
| Airflow (Turbo/Hi/Mi/Lo) | 706/706/647/559/441 CFM |
| Dehumidification | 4.2 pt/h |
| Drain Pipe Diameter | 3/4" |
| Controller | L1-12 |
System Specs
| Cooling Capacity | 24,000 BTU |
|---|---|
| SEER2 | 19.5 |
| Voltage | 230V |
| Refrigerant Type | R32 |
| Copper Line Length | 16.4 ft |
| Compressor | Inverter |
| WiFi | Included |
Series Comparison Table
Technical specifications for every model in the series — this product is one of them.
| Indoor Models | OS-RM09SW-230VI | OS-RM12SW-230VI | OS-RM18SW-230VI | OS-RM24SW-230VI |
|---|---|---|---|---|
| Power Supply (V-Ph-Hz) | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 |
| Cooling Capacity (Btu/h) | 9000 | 12000 | 18000 | 23400 |
| Heating 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 |
| Refrigerant Piping (Liquid Side / Gas Side) (in) | 1/4" / 3/8" | 1/4" / 3/8" | 1/4" / 1/2" | 3/8" / 5/8" |
| Outdoor Models | OS-RMS18-230VO | OS-RMS24-230VO | OS-RMS36-230VO | OS-RMS42-230VO |
|---|---|---|---|---|
| Power Supply (V-Ph-Hz) | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 | 208/230V-1Ph-60 |
| Cooling Capacity (Btu/h) | 18000 | 27000 | 36000 | 42000 |
| EER2 | 13.33 | 12.85 | 12.85 | 12.0 |
| SEER2 | 22.0 | 23.0 | 22.0 | 22.0 |
| Heating Rated Capacity (Btu/h) | 18000 | 27000 | 36000 | 36000 |
| HSPF2 | 10.0 | 10.0 | 10.0 | 9.5 |
| COP2 (W/W) | 3.82 | 3.60 | 3.91 | 3.60 |
| Max Fuse (A) | 30 | 40 | 50 | 60 |
| Outdoor Air Flow (Hi) (CFM) | 1850 | 3357 | 3357 | 3357 |
| Outdoor Side Noise Level (dB(A)) | 55 | 62 | 64 | 64 |
| Dimensions (WxHxD) (in) | 33.88x26.38x12.25 | 38.38x32.88x14.12 | 38.38x32.88x14.12 | 38.38x32.88x14.12 |
| Outdoor Unit Packing (WxHxD) (in) | 39x28.75x17.75 | 43.75x37.75x18.12 | 43.75x37.75x18.12 | 43.75x37.75x18.12 |
| Net/Gross Weight (lbs) | 101.4/112.4 | 160.6/183.2 | 169.8/191.8 | 172/194 |
| Refrigerant Type/Quantity (oz) | R32/51.15 | R32/76.2 | R32/105.8 | R32/105.8 |
| Refrigerant Piping (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 | 82/230 | 82/230 | 82/262 |
| Ambient Outdoor (Cooling) (°F) | 5~125 | 5~125 | 5~125 | 5~125 |
| Ambient Outdoor (Heating) (°F) | -13~75 | -13~75 | -13~75 | 4~75 |
What’s Included
| Indoor unit | OS-24SRW-230VI |
|---|---|
| Remote controller | L1-12 |
Installation kit is not included in the selected option — pick 16ft, 25ft or 50ft above to add one.
Shipping & Returns
- Free shipping on every order over $300.
- Delivery estimate for your ZIP is shown in the buy box above.
- Returns accepted per our policy — unopened units in original packaging.
Warranty
5-year manufacturer warranty
- Limited manufacturer warranty on the compressor and sealed system components.
- Your order number is the proof of purchase — keep it for any claim.
Multiple Control Methods
Olmo’s Sierra Series can be managed with a user-friendly remote control and the. This options offer precise temperature adjustments and optimal climate control for ultimate convenience.
Frequently Asked Questions
Is this a complete system or just the indoor unit?
This listing is the indoor unit only. The OLMO Sierra 24,000 BTU indoor unit is sold as a single component for replacements and custom builds, so it does not include the outdoor condenser, line set or installation kit. Order the matching components separately if you are building a full system.
Which units is the OLMO Sierra 24,000 BTU compatible with?
It pairs with OLMO R32 equipment of the same refrigerant and voltage — R32, 230V. Match the indoor capacity to an outdoor unit rated for it, and keep the refrigerant identical: R32 components cannot be mixed with R410A.
What line set size does it use?
Copper line size is 3/8"/5/8" (liquid/gas). Use the same diameters on the matching component, and keep the run within the manufacturer's maximum length.
Do I need a licensed technician to install the OLMO Sierra 24,000 BTU?
Yes. Connecting refrigerant lines requires EPA 608 certification in the United States, and correct evacuation and charging are what keep the rated SEER2 of 19.5 and the factory warranty intact.
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