Two system heat maintenance in Grayson. Arrived on site, changed filter and cleared barometric ports. Checked ignition systems, electrical connections, amp draw and capacitance. Found upstairs system has no secondary water safty. Main level has no water safty at all, amp draw is high on inducer motor, 5uf capacitor is reading 2.5uf and blower assembly is dirty both putting stress on motor that is showing signs of oil leaking. Flame sensor reading low as well. Due to age and condition of system, I recommend replacing main level furnace. Both systems, however, are operating at this time.