Performed maintenance on the 4 working unite Replaced all filters: (4) 20x20x2 20x25x2 (2) 16x25x1 Cleaned flame sensors Checked capacitors Ran combustion test on the old unit (passed for healthy heat exchanger) Checked blowers Blower belt OK on big unit out back No water leaks present Blower wheels in good condition No concerns found at this time
