Conversely I have ECM's on both the indoor and outdoor units and the
compressor is a VFD. No RFI. It depends on the vendor, their OEM's, etc.
Best advice is find an installer that will take the time to understand
what you need. My installer was even interested enough to take me around
to existing installs of the system so I could listen for RFI.
73,
Steve
W1SRD
On 7/17/2024 11:35 AM, Jim Brown wrote:
On 7/17/2024 11:25 AM, Steve London wrote:
I have a 20 year old forced hot air, gas furnace. Still working fine,
but
it will need to be replaced in the next few years. I would also like
to add
A/C to the mix.
Hi Steve,
Controllers for variable speed motors are notoriously noisy, and
should be avoided. Yes, they are more efficient.
73, Jim K9YC
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