Today I arrived on site to address the reported AHU wiring issues. Troubleshooting & Repair: Identified wiring issues with the 1st floor AHU. Addressed the wiring issues. System Status: The AHU is now operational for heating and cooling systems. Upon arriving at the property, the client explained to me that he is having failures with the heating system on the 1st floor. The client explained to me that they had previously checked the system but the problem was not solved. I proceeded to check the AhU in the basement. I found a problem in the wiring of the unit. I corrected the wiring in the AhU. I showed the client and explained the situation to the client. I made some recommendations to the client. I recommended the client to consider doing the Duct cleanings of the systems (Attic & basement) I also provided you with information about our service contract. I also recommended the client to consider upgrading the heat systems by HeatPump. I told the client that I will pass t