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Explaining Common Furnace Problems

By Admin / in , , , /

Do you get chills hearing your furnace go bump in the night? Have you found yourself being treated to a chilly breeze instead of the toasty blast you were expecting? These are typical signs that mean your HVAC machinery is in need of maintenance. Instead of getting stuck in the cold in the middle of winter, make sure to call Vanak Mechanical if your system exhibits any of the following symptoms.

Sounds of Scraping

If your HVAC system sounds like there are bits of metal scraping against each other, there is most likely a problem with the blower wheel in your unit. Anytime you hear this type of sound, you should immediately disable your system and call Vanak Mechanical for an inspection. Your blower wheel could have any number of issues ranging from a simple loose screw to a defective turret that needs to be replaced. In some cases, it might not be the actual wheel, but the motor mount in need of servicing.

Audible Bang During Startup

If you hear a loud pop or explosion when your furnace boots up, it is usually a sign of a handful of possible issues. The most common causes are a dirty igniter or a dirty burner. When either of these areas are dirty, it can cause a buildup of excess gas, so when ignition occurs, you hear a minor explosion caused by the extra gas. Repeated explosions can cause cracks in the heat exchanger or even a carbon monoxide leak, both of which are inherently dangerous. Less common, the sound can be a result of undersized metal ducts or a clogged filter that is attached to your heating system.

Shrill Whining

High pitched whining not only is audibly disruptive, but it can also be a sign of furnace malfunction. In some cases, it could be that the shaft bearings need to be oiled, or the blower belt may be having some issues, having the techs from Vanak Mechanical come to check your system prior to the start of the season is a great way to address these issues.

Heating System Blowing Cold Air

There are a plethora of issues that could result in your HVAC system blowing cold air in instead of heated air. The first thing you should check is the thermostat to ensure that it is programmed to “automatic,” not simply “on.” When a system is set to on, it will blow air all the time, whether it’s heated or not. The second thing you should check is the air filters, typically filters need to be changed once a month to avoid becoming clogged. If there are leaks in your ductwork, it can also result in a reduction of heated air. Not only does this wear out your equipment, but it also increases your energy bills dramatically.

How We Can Help

When your heating system starts showing warning signs, it’s time to call Vanak Mechanical at (416) 278-3895. We are happy to set up a time to come out and diagnose your heating troubles and craft a solution that fits your needs and your budget.