LG Multi V Vertical Air Handler Indoor Unit, 42,000 BTU, 208–230V, R-410A — ARNU423NKA4 | New, Factory Sealed

Vertical air handler indoor unit for LG Multi V VRF (Variable Refrigerant Flow) systems. It installs in a closet or mechanical room and connects to ductwork, much like a conventional air handler.

Condition & availability

New, factory sealed, never installed. Original manufacturer packaging; the outer carton may show storage or handling wear. Ships in 1–3 business days by freight carrier with liftgate delivery included (lower 48).

Before you buy

• Requires a compatible LG Multi V outdoor unit at matching voltage. On heat recovery systems it connects through an LG heat recovery branch box. We sell equipment, not system design — please confirm compatibility with your HVAC contractor before ordering.
• Powered separately from the outdoor unit (208–230V, single-phase).
• Ductwork, grilles and filters beyond the unit itself are not included. Requires an LG wall controller (not included).
• R-410A refrigerant, for existing or expanding R-410A Multi V systems. Confirm with your contractor that it can be installed under current rules where it is going.
• Installation and start-up by a qualified HVAC contractor is required.

Manufacture date

The manufacture date is printed on the unit label. After your payment is authorized, we email you a photo of the label before anything ships. If the date doesn’t work for you, reply and we’ll cancel the order — your card is not charged.

Buying here

Card checkout with no card fees. Tax-exempt? Email your certificate to orders@facilitysurplus.com before ordering. Sold new and as-is — see our Terms of Service and Return Policy.