What Repairs Do Electric Furnaces Need?

What Repairs Do Electric Furnaces Need?

by | Feb 6, 2023 | Blog | 1 comment

Even while an electric heating system has benefits, it is often less preferred than any other furnace system on the market today due to its high operating costs.

The high cost makes it even more crucial than with other types of systems to prevent heat loss brought on by incorrectly installed ducts or insufficient insulation.

Every year before the start of the heating season, have your electric furnace cleaned and adjusted by a qualified service technician for maximum energy efficiency.

Avoid attempting any repairs to an electric furnace’s heating elements, electrical connections, relays, transformers, or similar parts; these repairs should only be carried out by a qualified technician.

Electric furnaces are safer, cleaner, and simpler to install. The only issue is that, like any machine, they might become worn out. Over time, this will result in repair problems.

If you request a repair as soon as you can, you can prevent suffering more damages or higher utility costs. Here are six repair problems to watch out for:

1. Bad Heating Element

Is the furnace merely being unresponsive? There could be a variety of heating components at fault. The rest of the system may stop working if one of them has failed or stopped working as a result of faulty wiring.

You’ll arrive at your freezing home fast. Fortunately, fixing the problem should only require changing the damaged component.

2. Defective Blower Motor

Perhaps even if your furnace appears to turn on, no hot air is emanating from the vents. You might also note that there isn’t a fan running. If so, it’s possible that the blower motor has burned out.

The blower fan will direct the hot air that the heat exchanger has produced into the ducts. However, your furnace won’t be able to transmit that warm air if that fan motor fails.

It’s critical to have this corrected right away because it can potentially contribute to overheating problems.

3. The Sequencer Has Issues

If every heating element in the furnace were to operate simultaneously, the circuit would be immediately overloaded.

Instead of overwhelming the system, the sequencer’s purpose is to turn the elements on and off. If the sequencer breaks down, the furnace may trip the circuit breaker or cease to operate altogether.

4. A faulty or broken limit switch

The limit switch is installed to avoid overheating of your furnace. During normal operation, it will prevent the furnace from going overboard and producing an excessive amount of heat.

However, if the limit switch is malfunctioning, it may simply turn the furnace off. Or it might not work at all, causing the furnace to overheat.

5. Outdated Electrical Infrastructure

A wide range of electrical issues can prevent your furnace from functioning properly, whether it’s because of faulty or outdated wiring or from an electrical panel that cannot handle all of your equipment.

It’s also possible that these issues are caused by the thermostat rather than the furnace, making the problem’s origin harder to determine. In the end, it’s always preferable to have an expert review the situation for you.

6. Unclean Air Filter

Finally, before calling for furnace maintenance, always remember to check the air filter. One of the most frequent causes of furnace difficulties is clogged air filters.


Problem 1 – Furnace won’t run


No electricity

It is switched off

The motor is overloaded


1. Inspect the furnace, the main entrance panel, any additional entrance panels, and any blown fuses or tripped circuit breakers; then, restore the circuit.

2. On a separate power switch that is on or close to the furnace.

3. Press the reset button after waiting 30 minutes. If necessary, repeat.

PROBLEM 2- Not enough heat


1. An improperly set thermostat.

2. Filter dirty.

3. A blocked blower.

4. Closed or blocked registers.

5. An out-of-balance system.

6. A loose or damaged blower belt.

7. A defective element


1. Increase the temperature by 5°.

2. Replace or clean the filter.

3. Wipe down the fan assembly.

4. Check that all registers are open and that no furniture, drapes, or carpets are in the way.

5. A system of balance.

6. Change or adjust the belt.

7. Speak to a specialist.

PROBLEM 3 – Furnace turns on and off repeatedly


1. Remove dirt.

2. The blower or motor has to be lubricated.

3. A blocked blower.


1. Replace or clean the filter.

2. Lubricate the motor and blower if they have oil ports.

3. Wipe down the fan assembly.

PROBLEM 4 – Blower won’t stop running


1. Incorrectly configured blower control.

2. Defective relays.


1. Reset the thermostat to AUTO from ON.

2. Speak with a specialist.

PROBLEM 5 – Furnace noisy


1. Loose access panels.

2. Sticking, worn-out, or defective belts.

3. An incorrectly sized or sized blower belt.

4. The blower or motor has to be lubricated.


1. Properly mount and secure access panels.

2. Apply fan belt dressing to noisy belts and replace any that are worn or broken.

3. Change the belt.

4. Lubricate the motor and blower if they have oil ports.


Like any other home device, electric furnaces can break down. Because of this, you must make sure you have some troubleshooting advice at the ready.

You should now be able to identify and repair your electric furnace should it malfunction as a result of what we just taught you. Additionally, we would suggest that you have your electric heater professionally serviced on a regular basis by an expert.




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