joekewe

I just wanted to report success in resurrecting my Insteon home automation network from my new Carrier Infinity Variable Speed Heat Pump. Communications with my devices were almost completely blocked when the heat pump was running. I tried the Intermatic ET-NF that someone else suggested on this thread, but it didn’t help. I asked an engineer friend for the best EMI filter for 120-132 kHz, and he recommended the TDK-Lambda RSHN-2020 for my 208-230V-1 phase x 19.5A heat pump. It was only $36 from Digikey. It is about 5x2x2” (127x51x51mm), so I had to get a Carlon waterproof 6x6x4" junction box to hold it. Now my Insteon network is working like a charm with or without the heat pump running!