WhereBasement mechanical room
CatalogueServiced every 12 months · expected life 18 years
CatalogueFilter 16x25x4 · FILXXFNC0024 · Every 6 months
CatalogueIgniter · LH33ZS004 · On failure, about 7 years
CatalogueFlame sensor · LH680014 · Clean yearly, replace at 10
CatalogueKnown to go wrong: Pressure switch trips when the intake screen clogs with leaves
CatalogueKnown to go wrong: Igniter cracks after repeated short cycling