Performed heating maintenance on Daikin 97% efficient modulating natural gas furnace with VRV heat pump Pulled and cleaned flame sensor Blew out Condensate trap Blower clean iWave air ionizer functioning properly Aprilaire 210 air filter is still good until spring time Humidifier water panel is good Checked aprilaire ERV filters and heat exchanger core Checked aprilaire dehumidifier filter and coil Verified drain lines are are flowing properly Temperature rise for gas furnace is within specification No stored fault codes on the system controller Surge protector status light is still green Inspected intake and exhaust vent piping, no signs of leaks UV light status is normal No concerns found on today's visit