Performed maintenance on ICP system installed by another company. Ductwork was replaced by Total Air in 2021. The supply plenum below the ceiling in the garage is contaminated with biological growth which is effecting the new ductwork and causing allergies. Recommended to client on having a Pure Air X whole house UVC system installed to eliminate the growth and protect the home which client opted to move forward with for the discounted price of 900. Cleared drainage system. Electrical components and refrigerant levels good at this time. Total 900 paid with discover. Job complete.