[RFI] Ruud Furnaces and AC units

[Dan K2YWE]

Electronically Controlled Fan. I'm not so sure. The are some in high end
Carrier AC/heat pumps that some local hams have reported as EMI quiet.
Probanly some other brands too.

73, Dan

On Sun, Jul 6, 2025, 3:51 PM Jim Brown <jim at audiosystemsgroup.com> wrote:

> What's an ECM fan?  If it's variable speed, it's almost certain to be
> noisy.
>
> 73, Jim K9YC
>
> On 7/6/2025 8:54 AM, Dan K2YWE wrote:
> > Is there any group knowkedge with respect to RFI from Ruud oil furnaces
> and
> > AC units that have ECM fans?
>
>
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