Heating maintenance braselton. Completed heating maintenance on 4 year old system. Blower and evap coil clean. Static pressure is good meaning system has good air flow. Filter is good. Heat strips are working properly. Insulation is good in attic. System has no back up water safety to protect system as well as house from water damage. System would also greatly benefit from having surge protector installed as well as UV light treatment to kill bacteria viruses and chemicals in air that could cause harm to residents.