What is the maximum extension length of the connection pipes for the Mijia Air Conditioner Pro Eco A+++ 12K?

The maximum length of the connection pipes for the Mijia Air Conditioner Pro Eco A+++ 12K is 10 meters. When the pipe length exceeds 7 meters, additional refrigerant (15g per meter) must be added to avoid affecting the cooling performance.
Here are reasons why there is a extension length limitation for the connection pipes for your reference:
1. Longer pipes increase pressure drop in the system, which can reduce cooling efficiency. Adding refrigerant compensates for this loss and maintains optimal pressure;
2. Excessive pipe length can lead to temperature fluctuations and unstable operation. Staying within the 10-meter limit ensures steady and reliable performance;
3. Without extra refrigerant, the indoor unit will not receive enough refrigerant, causing insufficient cooling or potential compressor damage.