Product Overview
The Haier 2U18MS2HDA is an 18,000 BTU-class FlexFit Multi outdoor unit designed to serve up to two compatible indoor units. A multi-zone system allows each connected room or area to use its own approved indoor unit and controls while sharing one outdoor inverter-driven compressor. This listing is for the outdoor unit only; indoor units, branch piping, line sets, communication wiring, condensate materials, mounting equipment, and electrical components are selected separately.
The active product SKU is 2U18MS2HDA. Older customer copy, tags, and the unchanged Shopify handle referenced 2U18MS2VHB, but those legacy references are not being used for compatibility. Current product metafields identify the HDA unit as a 208-230V FlexFit Multi model for two select Haier multi-zone indoor units. Every indoor combination must be checked against the current approved-combination table because allowable capacities, line lengths, and performance depend on the connected mix.
Key Features:
- FlexFit Multi outdoor heat-pump unit
- 18,000 BTU/hr rated cooling capacity
- Supports up to two compatible indoor units
- 208-230V, 60 Hz, single-phase operation
- DC inverter-driven rotary compressor
- Flare refrigerant connections
Common Uses:
- Two-zone residential ductless systems
- Separate temperature control in two rooms or areas
- Replacement of a matching 2U18MS2HDA outdoor unit
Technical Specifications:
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Series: FlexFit Multi
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System Type: Multi zone
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Number of Indoor Units: Up to 2 compatible models
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Rated Cooling Capacity: 18,000 BTU/hr
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Voltage / Frequency / Phase: 208-230V / 60 Hz / single phase
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Minimum Circuit Ampacity: 19A
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Maximum Fuse Size: 30A
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Outdoor Sound Level: 51 dBA
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Cooling Operating Range: 14-115°F
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Heating Operating Range: -4-75°F
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Maximum Line Length: 65 ft
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Maximum Height Difference: 50 ft
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Liquid Connections: Two 1/4 in. connections
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Suction Connections: Two 3/8 in. connections
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Factory Refrigerant Charge: 60 oz.
Dimensions:
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Width: 35 in.
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Height: 27-5/8 in.
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Depth: 13-1/2 in.
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Net Weight: 110 lb
Compatibility and Installation Notes:
Select only indoor units and combinations approved for 2U18MS2HDA. A qualified HVAC professional must calculate the zone loads, confirm connected capacity, line routing, charge adjustment, electrical service, drainage, and commissioning.
FAQ:
How many indoor units can be connected?
Current product data identifies support for up to two compatible indoor units.
Is the older 2U18MS2VHB model the active SKU?
No. The active SKU is 2U18MS2HDA.
Are indoor units included?
No. They are selected separately from the approved combination list.
Why Buy From Big Frog Supply?
Big Frog Supply provides clear product information, helpful support, and convenient online ordering for multi-zone ductless HVAC equipment.
