{"product_id":"5-zone-42-000-btu-olmo-series-ductless-mini-split-ac-wall-mounted-12k-12k-12k-12k-12k","title":"5 Zone 42,000 BTU OLMO Series Ductless Mini Split AC Wall Mounted 12k+12k+12k+12k+12k","description":"\u003cp\u003eThe OLMO Sierra 5-Zone Ductless Mini Split System features five wall-mount zones, each with 12,000 cooling BTU, and uses R454B refrigerant for efficient operation. It includes an outdoor unit model OS-RMS42-230VO, supports optional Wi-Fi control, and operates down to -4°F for heating in cold climates.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-zone system\u003c\/strong\u003e — the OS-RMS42-230VO outdoor unit powers 5 independently controlled wall-mount indoor units (rated for up to 5 zones); diameter adapters included, no branch boxes required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42,000 BTU nominal capacity\u003c\/strong\u003e across 5 zones — each room set and run on its own remote\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInverter heat pump\u003c\/strong\u003e — efficient variable-speed cooling and heating from one system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeats down to -4°F\u003c\/strong\u003e outdoor ambient — dependable cold-weather heating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR454B refrigerant\u003c\/strong\u003e — next-generation lower-GWP (A2L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Wi-Fi control\u003c\/strong\u003e and a remote included with each indoor unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eYour System Includes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutdoor unit (condenser):\u003c\/strong\u003e OS-RMS42-230VO — R454B multi-zone outdoor unit, factory pre-charged for up to 125 ft of line, with line-set diameter adapters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone 1 — Wall Mount:\u003c\/strong\u003e OS-RM12SW-230VI (12,000 Btu\/h) with remote control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone 2 — Wall Mount:\u003c\/strong\u003e OS-RM12SW-230VI (12,000 Btu\/h) with remote control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone 3 — Wall Mount:\u003c\/strong\u003e OS-RM12SW-230VI (12,000 Btu\/h) with remote control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone 4 — Wall Mount:\u003c\/strong\u003e OS-RM12SW-230VI (12,000 Btu\/h) with remote control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone 5 — Wall Mount:\u003c\/strong\u003e OS-RM12SW-230VI (12,000 Btu\/h) with remote control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine-set kits\u003c\/strong\u003e — choose the copper line-set length per zone at checkout (or supply your own)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications — OS-RMS42-230VO Outdoor Unit (208\/230V)\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e208\/230V \/ 1 Ph \/ 60 Hz (voltage range 187–253V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefrigerant\u003c\/td\u003e\n\u003ctd\u003eR454B (A2L) — next-generation, lower-GWP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefrigerant Charge (factory)\u003c\/td\u003e\n\u003ctd\u003e105.8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSEER2 (catalog)\u003c\/td\u003e\n\u003ctd\u003e22.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor Unit MCA \/ Max. Fuse\u003c\/td\u003e\n\u003ctd\u003e36 A \/ 60 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor Airflow\u003c\/td\u003e\n\u003ctd\u003e3,357 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor Noise Level\u003c\/td\u003e\n\u003ctd\u003e64 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Connectable Indoor Units\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre-charged Line Length\u003c\/td\u003e\n\u003ctd\u003e125 ft (add 0.16 oz\/ft beyond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Line Length — Total \/ Per Indoor\u003c\/td\u003e\n\u003ctd\u003e262 ft \/ 82 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Height Difference (Indoor–Outdoor \/ Between Indoors)\u003c\/td\u003e\n\u003ctd\u003e49 ft \/ 25 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Range — Cooling \/ Heating\u003c\/td\u003e\n\u003ctd\u003e5 to 125°F \/ -4 to 75°F outdoor ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor Unit Dimensions (W×D×H)\u003c\/td\u003e\n\u003ctd\u003e38.38 × 32.88 × 14.12 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor Unit Net \/ Gross Weight\u003c\/td\u003e\n\u003ctd\u003e172 \/ 194 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eOutdoor-unit specifications as printed in the official OLMO catalog and installation manual; combined-system capacity varies with the indoor-unit mix. Line sets are selected per zone by run length.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eThis System’s Zones\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eZone\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eIndoor Unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCooling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eOS-RM12SW-230VI\u003c\/td\u003e\n\u003ctd\u003e12,000 Btu\/h\u003c\/td\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eOS-RM12SW-230VI\u003c\/td\u003e\n\u003ctd\u003e12,000 Btu\/h\u003c\/td\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eOS-RM12SW-230VI\u003c\/td\u003e\n\u003ctd\u003e12,000 Btu\/h\u003c\/td\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eOS-RM12SW-230VI\u003c\/td\u003e\n\u003ctd\u003e12,000 Btu\/h\u003c\/td\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eOS-RM12SW-230VI\u003c\/td\u003e\n\u003ctd\u003e12,000 Btu\/h\u003c\/td\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow many rooms can this OLMO Sierra system heat and cool?\u003c\/h3\u003e\u003cp\u003eThis is a 5-zone system: the OS-RMS42-230VO outdoor unit connects to 5 wall-mount indoor units (12,000 BTU, 12,000 BTU, 12,000 BTU, 12,000 BTU, 12,000 BTU), so it conditions 5 separate rooms or areas at once. Each indoor unit has its own remote and runs independently — set a different temperature in every room, or turn off the zones you are not using to save energy.\u003c\/p\u003e\u003ch3\u003eDoes it heat as well as cool?\u003c\/h3\u003e\u003cp\u003eYes. It is an inverter heat pump — it both cools in summer and heats in winter from the same system, with rated heating down to -4°F outdoor ambient, so no separate furnace is needed in most climates.\u003c\/p\u003e\u003ch3\u003eWhat refrigerant does it use?\u003c\/h3\u003e\u003cp\u003eR454B — a next-generation lower-GWP (A2L) refrigerant. The system ships factory pre-charged; a licensed installer tops off refrigerant based on your line length.\u003c\/p\u003e\u003ch3\u003eIs everything included, or do I need to buy line sets?\u003c\/h3\u003e\u003cp\u003eThe system includes the outdoor condenser, all indoor units, and their remotes; line-set diameter adapters are packed with the outdoor unit. Copper line sets for multi-zone systems are selected by run length per zone — choose the line-set kit length you need for each zone at checkout (or supply your own). Standard factory charge covers up to 125 ft of total line length.\u003c\/p\u003e\u003ch3\u003eCan I install it myself?\u003c\/h3\u003e\u003cp\u003eMulti-zone mini splits require a licensed HVAC professional for the refrigerant connections, electrical, and startup — professional installation is also required to keep the warranty valid. Many customers buy the equipment here and hire a local installer.\u003c\/p\u003e\u003ch3\u003eWhat warranty does it come with?\u003c\/h3\u003e\u003cp\u003eIt is backed by OLMO’s limited manufacturer warranty — \u003cstrong\u003e5-year compressor, 2-year parts, and 1-year remote\u003c\/strong\u003e. Coverage requires installation by a licensed HVAC contractor and product registration at olmo-comfort.com within 60 days of purchase.\u003c\/p\u003e\n\n\u003ch2\u003eWarranty \u0026amp; Support\u003c\/h2\u003e\n\u003cp\u003eBacked by OLMO’s \u003cstrong\u003e5-year compressor \/ 2-year parts \/ 1-year remote\u003c\/strong\u003e limited warranty. Installation by a licensed HVAC professional and product registration at olmo-comfort.com within 60 days of purchase are required to keep coverage valid.\u003c\/p\u003e","brand":"OLMO","offers":[{"title":"No Installation Kit","offer_id":47822193098997,"sku":"OS-RMS42-230VOM12SRWM12SRWM12SRWM12SRWM12SRW-NO","price":3910.5,"currency_code":"USD","in_stock":true},{"title":"16FT Installation Kit","offer_id":47822193131765,"sku":"OS-RMS42-230VOM12SRWM12SRWM12SRWM12SRWM12SRW-16FT","price":4091.94,"currency_code":"USD","in_stock":true},{"title":"25FT Installation Kit","offer_id":47822193164533,"sku":"OS-RMS42-230VOM12SRWM12SRWM12SRWM12SRWM12SRW-25FT","price":4138.02,"currency_code":"USD","in_stock":true},{"title":"50FT Installation kit","offer_id":47822193197301,"sku":"OS-RMS42-230VOM12SRWM12SRWM12SRWM12SRWM12SRW-50FT","price":4381.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0558\/6914\/5280\/files\/olmo-5-zone-42-000-btu-series-ductless-mini-split-ac-wall-mounted-992.webp?v=1773414644","url":"https:\/\/minisplitsforless.com\/products\/5-zone-42-000-btu-olmo-series-ductless-mini-split-ac-wall-mounted-12k-12k-12k-12k-12k","provider":"MiniSplitsforLess","version":"1.0","type":"link"}