Mini-Split fan noise concern - AVS Forum
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post #1 of 4 Old 10-06-2013, 12:14 AM - Thread Starter
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Hey all,

 

I just had my mini-split installed in the unfinished 19.5' x 13' theater space. It seems kind of loud at the lowest speed (28 db.)  I am wondering if this amount of sound will be and issue. Should I be concerned about clearly hearing the fan running in a space that is pretty much just sheet rocked walls or will the sound not be as bad in a finished space with a movie playing?

 

I think the unit might be over sized for my space, it is a Mitsubishi MSZ-GE18NA with 17,000 BTU and cools the room in minutes at the lowest fan speed. I am seriously considering dropping the wall unit down to the MSZ-GE12NA which is only 12,000 BTU and at the lowest speed is 19 db. This assumes I can keep the larger outside unit in place and just use a smaller wall unit inside.

 

How much difference would a drop of 9 db. make in a quiet home theater? I am sure this will cost me to make the change but it is probably easier to do now with the other side of the wall still open. Or perhaps I am being paranoid and the 28 db will be fine. I really have no reference point and was wondering if anyone had any opinion on the matter.

 

Thanks.


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post #2 of 4 Old 10-06-2013, 06:28 AM
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Is it 28 db at the listening position or at the head unit?

Generally, 28 db is pretty quiet. WHen you get all in and projector running and even at low volume, I'd be surprised if it bothered you. Your projector will likely be louder (unless you have it in a projection room).

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post #3 of 4 Old 10-06-2013, 08:41 AM - Thread Starter
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It is 28 db at the head unit. This head unit is about 6 1/2 feet away from the front row of seats, and it is about 1 foot from the back row. The unit is just below the back right surround speaker.


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post #4 of 4 Old 10-06-2013, 01:07 PM
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Every 3 dB is half the power, so you're talking about 1/8 th the sound level. I hate fan noise (I'm typing this on a fanless computer) and choose low noise everything. I put in 0.3 sone Panasonic bathroom fans and still think they're loud. So, I'd choose the lower noise unit if you can and it meets your requirements. On the other hand, some people don't seem bothered by fan noise. If you're one of them, then ignore what I said.

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