Arrived to the customers home and greeted her at the door. Spoke with the customer about how the system has been performing and if had any questions or concerns. Customer stated still having high electric bills even with new system dating back to her original system during winter months.During today’s post install inspection found customers original thermostat is a one heat one cool that we did not replace with the install being they had just installed it two years prior. Give customer optional thermostat installed new thermostat today and confirmed system is now running heat pump in the heating mode and not electric strip heat. Completed today’s maintenance inspection, checklist uploaded pictures and videos. Collected payment and return system to service.