The webasto does make some noise on the exterior of the van while running.
I have a muffle on the exhaust and even a silencer on the intake altough
most say the intake silencer is not really needed. The muffler makes a big
difference.

The noise it makes is a bit of a low pitch drone. I'll try to get a youtube
video posted of the noise both outside and inside.

All in all I love the heater. It's nowhere near as annoying as a generator
but it does make noise.

Abel.
On Feb 9, 2015 11:34 AM, "Michael Magnani" <mfmagnani@sbcglobal.net> wrote:

> Hi Abel,
> I was wondering if you could let me know how much noise your Webasto
> heater makes when it's running. I'm considering trying to find an Air Top
> 2000T to install in my 1990 2WD Westy.
> Thanks,
> Mike M
>