What Is The Most Common Problem With Furnaces?

A malfunctioning furnace in the middle of a cold day could be a worst nightmare for any homeowner. With continuous usage, every machine is bound to get worn out. If you keep up with the necessary services and look after your system, it might be able to last longer than usual.

When your furnace stops working, you need a solution quickly. Read below to learn about the most common furnace problems often faced by many homeowners.

Common Problems With Furnaces

  • Thermostat Not Working

This is the most common problem. If your fan is constantly running, your thermostat’s batteries can run out quickly, leading to an inefficient furnace. Set the fan on auto setting to solve this problem.

  • The Furnace Is Not Blowing Air

There could be several causes behind this problem. The most common issue is a clogged blower. You should always ensure that the blower is not clogged and is clear of debris. If the problem continues, it’s time to call Diversified Heating & Cooling for furnace repair services in Yucca Valley.

  • Dirty Filters

Dirty or clogged filters will reduce the necessary airflow your furnace needs to function and reduce its efficiency. It can also damage your limit switch. So every homeowner should ensure that these filters are cleaned or replaced regularly.

  • Malfunctioning Blower Belt

The blower belt helps in running your furnace’s fan. Over time, these will start to break or fray. While operating, you can identify this problem by a high-pitched squealing sound from the furnace. Replacing the belt is the best option as it will improve the efficiency and performance of the fan.

  • Frequent Cycling

If your furnace seems to kick on frequently after just finishing a cycle, then it may be because of a dirty filter, insufficient airflow, or being run too high or too low. A frequently cycling furnace can lead to high energy bills.

Pilot Light

The pilot light is necessary for a properly working furnace. If you notice your pilot light is flickering or is yellow, it indicates the presence of excessive carbon monoxide in the furnace. If you notice any change in your pilot light, it is best to call a professional immediately. At Diversified Heating & Cooling, we offer 24/7 service for emergencies so don’t hesitate to call (760) 418-0426 right away for heating repairs in Yucca Valley.

  • Damaged Heat Exchanger

The heat exchanger keeps your furnace running safely. The heat exchanger can crack if your system is overheating or if you don’t pay attention to the filter’s replacement. It is costly to repair, and you will need to contact a professional for repairs.

  • Strange Noises

If you notice popping, rattling, or pinging noises coming from your furnace, it means that something is wrong. There can be several reasons behind these noises. Rattling noises indicate loose panels on your furnace, which need to be tightened. Pinging and popping noises are related to problems in the ductwork.


If you are experiencing any issues with your furnace, it is time to schedule furnace repair with a professional. Contact us at Diversified Heating and Cooling, and get the best services for your heating and cooling systems.