Combo Tune Ups Performed- performed maintenance on two 2020 Lennox furnaces and two ac pro condensers. Upon arrival systems are working and operational. I began my maintenance at the outdoor units by breaking them down and cleaning with water and solution. Removed heavy amounts of dirt and debris. I then inspected all electrical components for signs of wear and checked for tight connections. I measured amp draws and recorded refrigerant pressures. I then proceeded to the indoor furnace units. Here I took temperature splits and measured static pressures. I inspected the condensate lines for proper drainage. I checked electrical components for tight connections and wear. Inspected the blower housing for balance and dust. Checked heating components for wear. Inspected heating components for proper operation. Filters have been checked at this time, do not need to be changed. Upon inspection of both systems I found there to be no form of electrical protection on any of the units, recommende