Cleaned and serviced furnace. Last visit on plan. Tested all mechanical parts. System is very rusted/ corroded. Customer does want a new hsi however wants to schedule a day for it due to work and snow storm. System is operating and heating as it should be at this time. Customer just changed furnace filter. Customer will schedule for hsi with Kristina. Customer renewed maintenance program, prepaid for spring of 2025 and next heating season.