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In addition to the type of routine maintenance you might be willing to perform, your furnace should be inspected regularly by a properly
trained service technician. You should work with your dealer or service technician to assure your inspection includes the following at a
minimum.
MAINTENANCE CHECKLIST
DESCRIPTION
INSPECTION INTERVAL
Monthly Bi-annually Annually
Furnace specific, external items:
Clean or replace air filters. X
Inspect cabinet for signs of damage. X
Inspect and clean door louvers if needed. X
Inspect electrical disconnect for p roper function. Repair or replace as
necessary.
X
Inspect external wiring for damage. X
Inspect gas supply line and manual shut-off for leaks. X
Furnace specific, internal items:
Inspect and clean blower assembly (includes b lower housing, blower
wheel and motor).
X
Inspect gas valve and ch eck for proper manifold gas pressure A djust as
needed.
X
Inspect ignition system and safety controls. Clean and adjust as
needed.
X
Inspect control box, associated controls, wiring and connections. X
Check combustion blower housing for lint and debris and clean as ne-
cessary.
X
Inspect burner assembly - clean asneeded. X
Inspect heat exchanger - clean as needed. X
Inspect flue system—check for proper attachment to the furnace, any
dislocated sections, and for signs of corrosion. R eplace if necessary.
X
System:
Inspect airflow system (ductwork)—check for leaks and repair as
needed.
X
Inspect evaporator coil, drain pan and condensate drain lines as applic-
able. Clean asneed ed.
X
This list may not include all maintenance items, and inspection interval times may vary depending on operational conditions of the furnace.
Ask your servicing dealer for further details about an economical service contract that covers seasonal inspections.