Performed furnace maintenance on two Carrier furnace located in Glenview, Illinois. Humidifier maintenance on AprilAire humidifier replace Aprilaire Humidifier pad filter. Performed air cleaner maintenance on Honeywell Electronic air cleaner. Service done under service agreement-service contract. Call North Shore Heating and Cooling your local heating contractor at 847-729-1040 today and get a free quote on our Preventive Maintenance and safety Agreements. Agreement includes yearly HVAC maintenance, furnace maintenance, air conditioner maintenance, water heater maintenance etc.