Single system Homecare. Flushed and pumped drain line. Visually inspected blower, ducting, coils and heat exchanger. Checked electrical components and safeties. Checked refrigerant levels. Performed carbon monoxide inspection. Cleaned flame sensor. Found system to have buildup in ducting, dirty blower, minimal flood protection dirty ac and no IAQ products. Quoted repairs. Customer will budget and address repairs in coming weeks. Informed customer system is single stage and zoned. Heat exchanger shows excessive wear given age and would not expect to get full life expectancy out of equipment.