Cracked Heat Exchanger Oil Furnace

Weld the sheet metal some more as it dries.

Cracked heat exchanger oil furnace.

Symptoms of a cracked heat exchanger. Press this onto the furnace heat exchanger and allow it to dry. A normally operating gas furnace has a steady blue flame. The heat exchanger in your furnace heats air traveling from one end to the other.

This happens when the. This is because air is entering the combustion chamber through the crack in the heat exchanger. This raises the amount of oxygen in the exhaust gases. Here are some signs that may indicate your issue is a cracked or malfunctioning heat exchanger.

When the external components show signs of either minor or significant wear. But the decision to repair or replace a heating unit can be difficult. When carbon builds up within the interior of the heating system then soot accumulates. A heat exchanger acts as a collection station for combustible gas and allows the gas to make the air reach a boiling hot temperature.

Incomplete combustion usually causes an increase in soot. With a cracked heat exchanger the amount of oxygen inside the combustion chamber rises while the blower fan is running. 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. This trips a safety switch and shuts down the furnace.

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. Signs your furnace has a cracked heat exchanger the flame s appearance changes. A burner with a moving yellow. When the flame is blue it means your.

A cracked heat exchanger allows air from the furnace blower to interfere with the flame causing it to flutter or even roll out. It s the most common cause of excess carbon monoxide in a home. A crack in your heat exchanger is no trivial matter. Cracks and corrosion on other components.

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. Beware of an unethical technician who finds a crack with a camera on a furnace that seems to be running just fine. Often when cracks are present in a heat exchanger soot from the combustion process will seep through and discolor the metal. Depending on the age of your furnace a cracked heat exchanger probably means you need a new system.

A furnace flame should be blue in appearance. If your heat exchanger has cracks these cracks cause your furnace to perform inefficiently.