4 Zone 36,000 BTU OLMO Sierra Ductless Mini Split AC Wall Mounted 9k+9k+12k+12k | No Kit

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

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

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

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

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

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

OLMO5-Yr Warranty

OS-MSR36-230VO09WM09WM12WM12WM-NO

Product specifications

Brand	Olmo
Voltage	230V
SEER	21
WiFi	Included
Zone	Four Zone
Type	Wall Mount
Freon	R410A
Compressor	Inverter

~~$2,390.02~~ $2,222.71 Save 7% Sold out

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All Zones Installation Kit: No Installation Kit

No Installation Kit 16FT Installation Kit 25FT Installation Kit 50FT Installation kit

Product variants

Pickup currently unavailable at 3550 Northwest 113th Court

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

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, optional LineSet, 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 4 Zone 36,000 BTU mini split cool?

The Olmo 4 Zone 36,000 BTU mini split can effectively cool up to four rooms, with a total coverage area of approximately 1,500 sq ft. This flexibility allows you to manage temperature control in different zones simultaneously.

Can I mix BTU sizes for the Olmo multi-zone system?

Yes, the Olmo 4 Zone system can accommodate mixed BTU sizes, such as the 9k+9k+12k+12k configuration. This allows you to customize cooling based on the specific needs of each room while still maintaining efficient operation at a total of 36,000 BTU.

Do all zones in the Olmo mini split system run simultaneously?

In the Olmo 4 Zone 36,000 BTU system, all zones can run simultaneously, allowing for independent temperature control in each area. This feature enhances comfort and efficiency, particularly in larger spaces.

Is the Olmo mini split system good for heating in cold weather?

Yes, the Olmo 4 Zone 36,000 BTU mini split is designed to provide effective heating even in colder temperatures. With a SEER rating of 21.0, it offers superior efficiency, making it a reliable choice for year-round climate control.

What warranty does the Olmo 4 Zone system offer?

The Olmo 4 Zone 36,000 BTU mini split comes with a 5-year parts and compressor warranty, ensuring reliable performance and peace of mind for your investment. This warranty covers the essential components of your system.

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

Yes, the Olmo 4 Zone 36,000 BTU mini split comes pre-charged with R410A refrigerant for installations with up to 25 ft of line set. This feature simplifies installation and ensures optimal performance right from the start.