6 Common Commercial Furnace Problems and What to Do

October 27, 2022

If your commercial furnace breaks down, it can cause a lot of inconvenience and disruption to your business. A furnace breakdown can also be expensive to fix, so it's important to know how to troubleshoot common furnace problems.


There are a few common commercial furnace troubleshooting situations that you should be aware of. These include:


1. Furnace Not Igniting


If your furnace isn't igniting, the first thing you should check is the power supply. Make sure that the power switch is turned on and that the furnace is plugged into a power outlet.


If the power supply is fine, the next thing to check is the furnace's igniter. This is a small device that produces a spark that ignites the furnace's gas. If the igniter is faulty, it will need to be replaced.


2. Furnace Not Producing Heat


If your furnace isn't producing heat, the first thing to check is the thermostat. Make sure that it's turned on and set to the correct temperature.


If the thermostat is fine, the next thing to check is the furnace's burners. These are the parts of the furnace that actually produce the heat. If the burners are dirty, they won't be able to produce heat effectively. Cleaning the burners should fix the problem. If the burners are clean and the furnace still isn't producing heat, the problem is likely with the furnace's blower. The blower is responsible for circulating air through the furnace. If it isn't working, the furnace won't be able to heat the home.


3. Furnace Producing Strange Noises


If your furnace is producing strange noises, it can be a sign of a problem. Many times, strange noises coming from your furnace are due to loose parts, which can be easily fixed.


If you're hearing strange noises coming from your furnace, the first thing you should do is check for loose parts and tighten them up. If that doesn't fix the problem, then you should call a professional.


4. Furnace Won't Turn On


If your furnace won't turn on, the first thing you should check is the thermostat. Make sure it's set to the correct temperature and that the batteries are good.


If the thermostat is set correctly and the batteries are good, then the problem may be with the furnace itself. If the furnace is getting power, then the problem may be with the pilot light. Try relighting the pilot light and see if that fixes the problem.


If the pilot light is lit and the furnace still won't turn on, then the problem may be with the igniter. Try cleaning the igniter and see if that fixes the problem.


5. Furnace Leaking Water


If your furnace is leaking water, it's usually due to a clogged drain line. The first thing you should do is locate the drain line and clear it out.


If the drain line is clear and the furnace is still leaking water, then the problem may be with the condensate pump. Try cleaning the condensate pump and see if that fixes the problem.


6. Furnace Blowing Cold Air


If your furnace is blowing cold air, the first thing you should check is the thermostat. Make sure it's set to the correct temperature.


If the thermostat is set correctly and the furnace is still blowing cold air, then the problem may be with the furnace itself. If the furnace is getting power, then the problem may be with the igniter or the flame sensor. Try cleaning the igniter and the flame sensor. If the furnace is not getting power, then the problem may be with the circuit breaker or the fuse. Check the circuit breaker and replace any blown fuses.


Conclusion


There are a few common commercial furnace troubleshooting situations that you may come across. If the furnace is not igniting, ensure that there is power to the unit and that the gas is turned on. If the furnace is not producing heat, check the thermostat to ensure it is turned on and set to the correct temperature. If the furnace is making strange noises, it may be due to a build-up of dirt and debris in the unit. In this case, it is best to contact a professional for assistance.


McCormick-Allum Co. are expert HVAC contractors in Massachusetts and Connecticut. We are mechanical contractors providing installation, service, and repair for commercial and industrial clients. Our contractor services include work utilizing many specialized trades, such as refrigeration and service technicians, sheet-metal workers, pipe fitters and plumbers, electricians, designers, and engineers. Get regular services from a trusted
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