Hi, my first advice would be to check that your fins are very clean, and if not to buy a good cleaning system and use it frequently. The first reason of vacuum dropping is the fouling of the fins which reduce the heat exchange.
If you’re still loosing vacuum in your ACC, misting is a good idea but:
– If your relative humidity is high (more than 80%, the results is not going to be signifiant). More your air is dry, more it is efficient.
– it’s better to use soft water that demin water which required 316L materials.
Please contact me to get more information about our ACC Cleaning Robots and our Fogging Modular Solutions. (www.ax-system.com )