Can 3P 4 10a inverter air conditioner be installed without vacuuming? Fluorine addition takes about 15 seconds (without vacuum pump). It won't have any effect, will it?

Of course. I didn't spend time. Then, cleaning with snow seeds is impossible! Because, R4 10a snows are always mixed together. If the system is not vacuumized, the effect will be poor! It's just that you can't feel the locker of a threesome! Inverter air conditioners like 1P, especially Daikin and Mitsubishi, will have a much worse effect!