Furnace Preventative Maintenance

The following furnace maintenance items should be performed once a year or as needed. Some are DIY but others should be performed by a qualified technician.

Burner

• Clean the burner head to remove debris and corrosion.
• Inspect for distortion or large holes.
• Replace as necessary.

Igniter

• Check and clean igniter for carbon or corrosion.
• Check for cracks in porcelain.
• Replace if bad.

Gas Valve

• Clean the orifice.
• Check amp draw of gas valve solenoids and replace if weak or bad.
• Check electrical connections to be sure they are tight.

Blower and Combustion Wheels

• Inspect for balance and replace if damaged.
• Clean dirt and obstructions off wheel.

Combustion Chamber

• Inspect air intake and exhaust for mud dabber nests.
• Clean chamber per manufacture approved methods.
• Inspect chamber for cracks and holes. None are allowed.

Blower Motor

• Replace if it fails or makes abnormal noises

Circuit Board and Wiring

• Inspect board for water damage, loose solder joints and excessive dirt.
• Check furnace wiring for broken or melted insulation. Always replace with correct temperature rated wiring.

Ducts and Plenum

• Check that ducts are connected properly to the plenum box.
• Check for smashed or torn ducts.
• Check for register damage and that rugs or other objects are not blocking air flow.
• Check CFM and air temperature coming out of ducts.

Gas Pressure

• Do gas pressure drop test at test port near burner.
• Verify that pressure is sufficient with other propane devices running.
• Low gas pressure can cause incomplete combustion and sooting.
• Use approved leak detector to check any fittings that were opened during testing.

Sail Switch

• Remove switch and clean dirt or lint.
• Check switch for operation and verify it does not stick closed

Voltage

• Check that 12VDC voltage is within proper operating limits.

Want to schedule service by a qualified technician? Click Here