OLMO Sierra 36,000 BTU 3-Zone 12k+18k+18k Wall Mount, 230V, R410A - Ductless Mini Split Air Conditioner Heat Pump | No Kit No Kit No Kit

White Installation Kit OLMO 36000 BTU Ductless Mini Split Air Conditioner with R410A refrigerant 230V SEER 21.0 Inverter

OLMO 36000 BTU Ductless Indoor Unit Mini Split Air Conditioner with R410A refrigerant 230V SEER 21.0 Inverter

OLMO 36000 BTU Ductless Outdoor Unit Mini Split Air Conditioner with R410A refrigerant 230V SEER 21.0 Inverter

Remote Control OLMO 36000 BTU Ductless Mini Split Installation Kit with R410A refrigerant 230V SEER 21.0 Inverter

Components OLMO 36000 BTU Ductless Mini Split Smart WiFi Control with R410A refrigerant 230V SEER 21.0 Inverter

OLMO5-Yr Warranty

OS-MSR36-230VO12WM18WM18WM-NO/NO/NO

Product specifications

Brand	Olmo
Voltage	230V
SEER	22
WiFi	Included
Zone	Three Zone
Type	Wall Mount
Freon	R410A
Compressor	Inverter

~~$2,319.94~~ $2,157.54 Save 7%

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Product variants

Quantity

Pickup available at 3550 Northwest 113th Court

Usually ready in 2-4 days

Hurry to buy! Get your mini-split system with R-410A refrigerant (offer valid until November 27)

Important info

R-410A is being phased down in favor of newer refrigerants; inventory is limited.
Existing R-410A systems remain serviceable; parts and qualified service are widely available.
Check local codes and rebates. Some incentives prioritize high-efficiency heat pumps (R-32/R-454B).
We stock both R-410A and next-gen options—choose what fits your timeline and budget.

Browse: R-410A systems · R-32 · R-454B

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

Complete 3-Zone System

Heat or cool 3 rooms independently from one 36000 BTU outdoor unit (12K+18K+18K) — every zone sets its own temperature, delivered by wall mount indoor units.

Inverter Efficiency — SEER2 22

A variable-speed inverter compressor ramps to match the load instead of cycling on/off, holding SEER2 22 on 230V — steady comfort with noticeably lower energy bills.

Right-Sized Coverage

Engineered to heat & cool up to 1400–1800 sq ft across 3 zones — matched capacity so you never over- or under-size the space.

Sierra Wall Mount

OLMO's Multi-Zone Sierra Series is a versatile HVAC solution designed to provide efficient heating and cooling for multiple rooms, equipped with advanced inverter technology for precise temperature control and significant energy savings. Using eco-friendly R410A refrigerant, the system ensures reliable performance with minimal environmental impact. Perfect for residential or commercial applications, the Sierra Series offers quiet operation, flexible installation, and user-friendly controls, making it an ideal choice for maintaining year-round comfort across multiple zones with one efficient system.

Warranty and Tech Support Info

By selecting OLMO products for your home or business, you’ll receive expert technical support from heating and cooling specialist, including access to product manuals, troubleshooting guides and warranty information.

The manufacturer provides a Limited Warranty of 5 years for the compressor and 2 years for parts.

Warranty terms

White wall-mounted air conditioner with sleek design and modern aesthetic.

Main Features

OLMO's Multi-Zone Sierra Series delivers efficient multi-room comfort with advanced inverter technology for precise temperature control. Its eco-friendly R410A 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.

All Accessories Included

With your purchase, you receive a comprehensive MiniSplit system. MiniSplits4Less ensures you have everything needed for a seamless installation. Your package includes an Indoor Unit, Outdoor Unit, Remote Control, Manuals, a 16ft Line Set, and a Smartkit (WIFI). We've meticulously thought of every detail to provide you with all the essentials for your installation.

Technical Specifications

Indoor Models	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
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-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
Cooling
EER2 Btu/h	12.5	12.5	12.5	10.5
SEER2 Btu/h	21.0	22.0	21.0	20.0
Heating
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
Refrigerant Type/Quantity oz	R410A/63.49	R410A/81.13	R410A/105.82	R410A/120
Refrigerant Precharge ft	50	75	98	98
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	66/197	66/246	66/262
Ambient Temperature
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

Multiple Control Methods

Olmo’s can be managed with a user-friendly remote control. This options offer precise temperature adjustments and optimal climate control for ultimate convenience.

Frequently Asked Questions

How many rooms can the Olmo 3 Zone 36,000 BTU mini split cool?

The Olmo 3 Zone 36,000 BTU mini split can effectively cool two rooms, with coverage up to 1,200 sq ft. This makes it an ideal solution for multi-room applications.

Can I mix BTU sizes with the Olmo mini split system?

Yes, you can mix BTU sizes in a dual zone setup like the Olmo 3 Zone 36,000 BTU system, which includes a 12k BTU unit and an 18k BTU unit. Just ensure the total BTU does not exceed the system's capacity for optimal performance.

Do all zones of the Olmo mini split run simultaneously?

No, the Olmo mini split allows you to control each zone independently. This means you can run one zone while the other remains off, which can enhance energy efficiency.

Is the Olmo mini split more efficient than multiple single-zone units?

The Olmo 3 Zone 36,000 BTU mini split features a SEER rating of 22.0, which indicates superior energy efficiency compared to using multiple single-zone units. This can lead to lower energy bills and a more streamlined installation.

What is the warranty on the Olmo mini split system?

The Olmo mini split system comes with a comprehensive 5-year parts and compressor warranty, ensuring you have reliable coverage for your investment.

Does the Olmo mini split come pre-charged with refrigerant?

Yes, the Olmo mini split is pre-charged with R410A refrigerant for up to 25 ft of line set. This simplifies installation and ensures optimal performance from the start.