I own a 2018 Nissan leaf with a heat pump for Heater. I understand that when the temperature is low enough the resistive Heater auxiliary turns on. I noticed that when the temperature is below 25° I hear an intermittent noise from what I assume is the resistive heater fan. It is fairly loud and comes on and off as needed. The service department person at Nissan tells me this is normal. I would like to know if either 2018 Nissan leaf owners with the heat pump experience the same noise.