Furnace Repair Contractors: Common Oil Furnace Problems And How To Fix Them

furnace repair contractors

Just like the electric furnace, the oil furnace also develops issues that you should fix for it to continue working optimally. To help you out, here are some of the most common oil furnace problems and how to fix them as given by furnace repair contractors:

Failure of the oil burner to fire

Your unit will have this problem if the oil tank is empty. This problem is common during extremely cold seasons. You might have scheduled oil delivery properly, but if you need a lot of heat, the tank can run dry.

The problem will also come up if the lines have picked up sediment from the bottom of the tank and clogged the nozzles. Other possible causes of this problem are cracked igniter and oil pump that isn’t working properly.

As you might have guessed, to fix this problem you need to fill the tank with fuel and see if doing it will fix the issue. You also should check the air nozzles whether they are clogged. If this doesn’t fix the problem, you should contact a furnace repair expert to give it a look.

Smoke from the burner

The major culprit of this problem is a clogged nozzle. The cool thing is that it’s easy to fix the problem. All you need to do is adjust the nozzle. If this doesn’t fix the problem, you should check for a blockage in the chimney that is causing a decrease in air flow.

If you are unable to find the cause of the problem, consider hiring an expert to help you with the diagnosing and fixing of the issue.

Failure of the oil furnace to work

Your unit is bound to develop this problem if there is loss of power or there is no fuel in your unit. You should check whether you have properly set the thermostat settings. You also should confirm whether the fuses have blown.

You should note that the problem also tends to come about if the wires leading up to the circuit box are broken or frayed.

Heating repair experts recommend that you try turning on the thermostat to the highest level and see if the problem will go away.


These are some of the most common problems that your oil furnace can have. For you to keep the unit in top condition all the time, consider undertaking regular heating systems tune-up.

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