[RFI] HVAC Quality

[James Jordan]

I have mentioned before that despite being variable speed units indoor and out I have had no RFI issues with my Carrier Infinity system. I thought I had a problem yesterday (turned out to be an old circuit breaker in the house) but I had  removed the corner cover on the outdoor unit to check incoming voltage. I was amazed at the number of toroids, large and small on various leads to the system circuit boards. That explains it and shows that some manufacturers are concerned about RFI. Admittedly it is also in their best interests for their systems not to be affected by stray RF. It might be useful if you’re considering a new HVAC  system to “look under the hood” to see if that brand and model is also taking RFI seriously. 
73,
Jim K4QPL