They are also more expensive and unreliable than PSC motors and probably will
never pay for themselves in energy savings. But they are designed to federal
energy standards where cost to the consumer is of no consequence.
I recently had one fail in my heat pump. After some heroic troubleshooting (if
I do say so myself) I found a shorted winding in the motor and was able to pry
the windings apart, clean off the carbon track and dab on some insulation. I
figured I saved $1K on a new motor and at least $1K in service charges.
Naturally, I used my $2K savings to purchase a $3K radio, a TS-890S.
Wes N7WS
On Thursday, January 7, 2021, 5:03:12 PM MST, Steve Dyer via RFI
<rfi@contesting.com> wrote:
Electronically Commutated Motor. And no, they aren't by design noisy.
Poorly implemented ones can be though!
I have several in my HVAC and they are quiet. The air handler blower
motor and condenser cooling fan are often ECM in modern systems like
what K2KW is looking at.
73,
Steve
W1SRD
On 1/7/2021 15:56, Jim Brown wrote:
> On 1/7/2021 1:24 PM, Kenny Silverman wrote:
>> If the units are single stage, is there less concern about RFI?
>
> If there is a variable-speed-contolled motor, there will be noise. I
> don't know what ECM is the acronym for. :)
>
> 73, Jim K9YC
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