Performed annual maintenance on two residential heating systems: 10-year-old boiler and 11-year-old furnace under rewards membership program. Disassembled and cleaned ultra boiler heat exchanger in main house, replaced customer-supplied humidifier water panel and filters. Restored disconnected thermostat to proper operation. At cottage, serviced furnace by cleaning flame sensor and condensate components, and performed standard boiler maintenance without disassembly as inspection indicated minimal fouling. All systems verified operational upon completion.
