Air Handler With Water Heating Coil – Noise From Flow Sensor Client has an air handler with a water heating coil connected to a tankless water heater. The tankless unit is a rental through Enercare. Client reported a noise coming from the flow sensor. Confirmed the noise and determined the flow sensor will likely need to be replaced. Since the tankless water heater is under Enercare’s rental . We will look into warranty coverage and provide next steps, or proceed with replacement if the client prefers us to handle the repair. System is still operating at this time. Client will monitor it for now, and we will follow up with options.