Before we know it, fall and winter will be here. As the cold air temperature slowly rises in Oklahoma City, you should inspect your furnaces at home to see if it’s still functioning well. You won’t like the idea of a faulty furnace during cold nights!

The majority of Americans use furnaces as their heating system. So, we listed the most common warning signs of a faulty furnace. And if these problem signs occur, you need to hire a reliable team offering furnace repair in Oklahoma City at the soonest possible time. 

Strange furnace smells

Ideally, your furnace at home will give out a smell that is similar to the fuel it uses. However, the odor will disappear while the equipment is being used. If it doesn’t go away, it might be a sign of a problem in your heating unit. These odors might occur due to a gas leak or dust accumulated inside your furnace. To assess it accurately, call an HVAC professional to get a proper heater evaluation and repair in OKC.

Functionality issues

Do you have difficulty turning your furnace on and keeping it running throughout the day? Although these scenarios are typical in old furnaces, they should not be ignored and must be assessed by an HVAC technician. The possible reasons could be damaged thermostats or loose wiring, which must be attended to immediately.

Yellow pilot light

A pilot light ignites the gas that is released into the burner when the furnace is turned on. Ideally, the pilot light that you should see is a blue flame. However, if you notice some discoloration of the pilot light, such as yellow or orange, have your furnace checked. This usually points to issues in the ventilation of the unit. The color change can also happen if there is an imbalance in the gases at work in your furnace, such as a high amount of carbon monoxide. When this happens, find a dependable team that specializes in furnace repair in Oklahoma City to check your unit right away.

Insufficient heat production

If your furnace doesn’t effectively warm up your house despite the correct settings in your thermostat, schedule a heater repair in OKC immediately. The HVAC technician will examine the ductwork for any leaks and check for a faulty thermostat.

Constant, strange noises

It’s not uncommon for a furnace to make noises now and then. However, a persistently loud noise calls for a thorough check by an HVAC specialist. High-pitched, squealing, or whistling sounds are usually associated with belt or fan issues. A groaning and banging noise can be caused by loose or broken internal parts. 

Poor Air Quality

Achieving good indoor air quality has a lot to do with your HVAC system at home. That’s why proper and regular furnace maintenance is always essential to keep the air clean to keep allergies, asthma, and other respiratory-related illnesses at bay.

Faulty Carbon Monoxide Detector

Carbon monoxide detectors should be used in conjunction with furnace systems. The detector would indicate the presence of toxic gases in the unit and is a crucial part of the safety of our homes. If your furnace carbon monoxide detector isn’t working properly, turn off the unit immediately and schedule a repair with an HVAC professional.


For all your HVAC repair, maintenance, and service needs in Oklahoma City, contact Southwest Mechanical Contractors! Call 405-632-3381 now!

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