Arrived to remedy a system that’s is not consistently heating longer heating. Upon arrival spoke with homeowner about the system and the seemingly consistent issues with the system. Started diagnostic on the system. Found that one of the breakers for the air handler was tripped as well as the breaker for the outside unit and the water heater. Reset these breakers and started system up. System started heating like normal. Tried testing individual components checking for things out of manufacturers specifications. Was unable to find any issue inside the air handler. Went to the breaker panel and found that the air handler breakers were wired into the air handler backwards. This meant that the heat kit was running on a smaller breaker meant for the furnace control board and system fan. The heat kit requires much more power than this breaker is rated to handle. Made the necessary adjustments to the systems wiring. System is functioning properly at this time.