Arrived to do a maintenance on a carrier system vertical in closet. I cleaned and flushed the drain line. Checked the electrical system. Washed the washable filters, 2-12x20x1 washable. I cleaned the coils with cleaner. Cleaned the drain line with cleaner and water. It is time for the renewal of the maintenance plan. I replaced the pan treatment. The uv lights will need to be replaced on the next maintenance. They have to be replaced yearly to be most effective. The system is working good at this time. Thanks for using air now for your air conditioning needs. Arrived to do a maintenance on a carrier system vertical in closet. I cleaned and flushed the drain line. Checked the electrical system. Washed the washable filters, 2-12x20x1 washable. I cleaned the coils with cleaner. Cleaned the drain line with cleaner and water. It is time for the renewal of the maintenance plan. I replaced the pan treatment. The uv lights will need to be replaced on the next maintenance. They have to be