Have HVAC Questions? Ask an HVAC Expert for Answers
Hello there and welcome to Just Answer. My name is ***** ***** I will be assisting you today. I am an engineer with over 30 years of electrical and electronic training, repair and installation experience. I will try and answer your question accurately and precisely so that we can get you on your way.
As you are aware, the mini split simply cools (or heats) the air already in the room and recirculates it. If you are getting an odor, this is what is most likely happening:
The indoor unit has a condensate pipe that exits through the wall and drains outside. There is a possibility that the pipe is clogged or restricted which will cause condensate water to pool in the indoor unit and eventually give off a moldy smell.
You would need to check to see if the drain pipe is indeed draining the indoor unit of condensate. If it isn't then there is a restriction and you would need to track it down and clear it.Once you have done that, you may want to closely inspect the indoor unit and give the inside of it a clean with Chlorox or something similar to kill any mold or mildew that may have collected.Please let me know if I can help you further.