Wi-Fi thermostat interferes with digital cable

OK this is gonna sound crazy but my background is 20 years in the service industry for HVAC so that being said we have a Honeywell Wi-Fi thermostat installed or HVAC system when and only when the thermostat calls for cool our digital signal starts pixelating like it interferes with it. I’ve tried 4 different thermostats relocated it the same thing I jump the wire with bubypassing the thermostat and it doesn’t it going I’m going over to his