Four unit heaters left to service. Tech notes: Rooftop #4: Lennox GCS16-048-120-BG//5605E06789 K20,k3, gas capped off at union. Rooftop #3: Lennox kGA240S4BH2G//5617G01786 Blower contactor 3p 25fla 24v coil Unit heater by east dock doors #9: Lennox (2) 5uf caps (measured 3.43, 3.21 small oval