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Cathar · 09-11-2003, 11:46 PM

I have an Iwaki MD-30RZ pump

It's fairly quiet. The pumps have a turbine whine to them, but a very quiet one.

My pump sits inside my radiator box.

The volume of noise it makes while it's inside the box can best be described as when everything else is off in the room, them room seems silent. When the pump is then turned off, you can sense that the room has become quieter, but not for the lack of any particular noise.

When outside of the box, yeah, it's audible. I'd place it at maybe 25-30dBA sort of volume.

09-11-2003, 11:46 PM	#9
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	I have an Iwaki MD-30RZ pump It's fairly quiet. The pumps have a turbine whine to them, but a very quiet one. My pump sits inside my radiator box. The volume of noise it makes while it's inside the box can best be described as when everything else is off in the room, them room seems silent. When the pump is then turned off, you can sense that the room has become quieter, but not for the lack of any particular noise. When outside of the box, yeah, it's audible. I'd place it at maybe 25-30dBA sort of volume.