I arrived to the customers home and greeted her at the door. Spoke with the customer on how the systems been performing. I’ve had any concerns at this time. Customer showed me main systems thermostat saying auxiliary heat was running at 50° outdoor temp. Completed today’s maintenance inspection on both systems. Maintenance inspection, checklist uploaded pictures and videos. Address concerns with customer with main level system found failed low pressure switch causing outdoor unit not to run allowing auxiliary heat to operate. Quoted customer for a labor only repair customer would like to verify the JB labor warranty is expired paperwork shows 02/16/24 as the expiration date. Emailed customer incomplete estimate until office can verify for customer and send updated estimate. Returned to service