Cracked Heat Exchanger Oil Furnace

Cracks and corrosion on other components.

Cracked heat exchanger oil furnace.

The heat exchanger in your furnace heats air traveling from one end to the other. Signs and symptoms of a cracked gas furnace heat exchanger change in flame appearance. Fire up a welder and use the liquid metal to form a glue like line around the edge of your sheet metal. Depending on the age of your furnace a cracked heat exchanger probably means you need a new system.

When carbon builds up within the interior of the heating system then soot accumulates. Here are some signs that may indicate your issue is a cracked or malfunctioning heat exchanger. If you see evidence of soot which is actually a black carbon buildup on the inside of the furnace it s a sign your furnace isn t burning cleanly. But the decision to repair or replace a heating unit can be difficult.

Beware of an unethical technician who finds a crack with a camera on a furnace that seems to be running just fine. Signs your furnace has a cracked heat exchanger the flame s appearance changes. When the external components show signs of either minor or significant wear. With a cracked heat exchanger the amount of oxygen inside the combustion chamber rises while the blower fan is running.

A cracked heat exchanger allows air from the furnace blower to interfere with the flame causing it to flutter or even roll out. Press this onto the furnace heat exchanger and allow it to dry. This raises the amount of oxygen in the exhaust gases. It s the most common cause of excess carbon monoxide in a home.

A burner with a moving yellow. This happens when the. If your heat exchanger has cracks these cracks cause your furnace to perform inefficiently. A heat exchanger acts as a collection station for combustible gas and allows the gas to make the air reach a boiling hot temperature.

It tests under actual operating conditions. This is because air is entering the combustion chamber through the crack in the heat exchanger. This trips a safety switch and shuts down the furnace. When the flame is blue it means your.

Incomplete combustion usually causes an increase in soot. The result will be a buildup of soot around the crack site and or spots that are a darker color than the rest of the metal. A normally operating gas furnace has a steady blue flame. Often when cracks are present in a heat exchanger soot from the combustion process will seep through and discolor the metal.

If you have a steel exchanger then cut down a piece of sheet metal to cover the crack plus 2 inches all the way around. A furnace flame should be blue in appearance.