Air conditioner 3.5 kW wall-mounted split multisplit indoor unit Standard 2 LG EZ12CYN.CSJ1

LG Standard 2 Wall-Mounted Air Conditioner – Indoor Unit 3.5 kW

The LG Standard 2 indoor unit is a simple yet effective component of split or multisplit systems, designed for stable and quiet operation in residential and office spaces. Its compact casing (837 x 308 x 189 mm) and weight of 8.7 kg make installation easier—even in space-constrained areas. The unit is controlled via remote, and the built-in temperature display on the panel allows quick verification of the current setting without needing the remote.

With a cooling capacity of 3.5 kW and heating capacity up to 4.0 kW, it is suitable for rooms up to 35 m². It operates efficiently even at low ambient temperatures—down to -10°C during heating—making it ideal for transitional seasons. The refrigerant R32 is environmentally friendly, with low global warming potential, enabling an A++ energy efficiency rating in cooling mode.

Noise level is not just a number—it’s an experience. In cooling mode, the minimum sound level is 19 dBA (almost silent), and the maximum is 41 dBA (a quiet fan hum). In heating mode, noise increases to 26–39 dBA, yet remains non-disruptive. Automatic horizontal and vertical louver control ensures even air distribution without manual intervention.

The anti-dust filters are easy to clean—simply rinse with water every few weeks. There is no motion sensor or “smart” auto-adjustment for occupancy, but this doesn’t mean a lack of intelligence: the Dual Inverter system adjusts compressor output to match real-time load—never fully shutting off, only reducing RPMs. This ensures consistent temperature, reduced fluctuations, and lower energy consumption.

Wi-Fi enables remote control via the LG ThinQ app—ideal for turning the unit on before returning home or off if accidentally left running. No F-gas certification is required to order the unit; it is factory-charged with refrigerant, though it may be recovered prior to shipment depending on sales terms. Installation must be performed by a certified technician—this is not merely a formality, but a safety and performance requirement.

Installation connections: liquid line 6.35 mm (1/4") and gas line 9.52 mm (3/8")—standard dimensions for this power range. Maximum allowable distance between units is 7.5 m without additional refrigerant charge; for every meter beyond 5 m, add 20 g of refrigerant. Height difference between units can reach up to 7 m—sufficient for most multi-family or single-family buildings.

The manufacturer’s warranty lasts 3 years—with no additional conditions such as “online registration.” This means: if the indoor unit fails within this period, service is provided at no extra cost.

There are no “magic” features like automatic interior cleaning or humidity detection. But it has what truly matters: reliable performance, low noise, energy efficiency, and simple operation.