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Why Is My Furnace Blowing Cold Air?

Winter in New Jersey can be harsh. Is your furnace keeping up with your heating demands? If you hear the fan running constantly but you still feel chilly, place your hand over a few supply registers around the house. If the air feels cold, you have a problem! Here are five possible reasons why your furnace is blowing cold air and when to schedule furnace repair to fix the problem.

The Thermostat Is Set to “On”

Thermostats have two fan settings: “on” and “auto.” When it’s set to “on,” the blower continuously runs, even when the burners aren’t lit. There’s nothing wrong with this setting, but the air coming from supply registers will feel cold at times. To save on operating costs, set the thermostat to “auto” so the blower only operates when the furnace is running.

The Pilot Light Is Out

Older furnaces rely on a constantly burning pilot light to ignite the burners. If your home feels chilly even though the furnace is running, check the pilot light to see if it has burned out. You can relight it if you feel comfortable doing so. Otherwise, schedule furnace repair and let a professional handle it.

The Flame Sensor Is Dirty

This prevents the burners from staying lit, so the air feels warm at first and then goes cold. For a safe and proper flame sensor cleaning, call in a professional technician.

There’s a More Technical Issue

The above problems are quite easy to recognize. If you can’t see a problem but your furnace is clearly blowing cold air, a more technical issue—such as a faulty igniter or malfunctioning circuit board—could be to blame. HVAC professionals can diagnose and fix the issue.

The Ductwork Is Leaking

There might not be anything wrong with your furnace at all. Instead, the air may simply be cooling off by the time it exits the supply registers. Leaky ducts with no insulation can cause the air to lose a lot of heat, especially if your ductwork runs through the attic. Check any exposed ducts and if you see unsealed gaps, loose connections, or missing insulation, call a professional to fix the problem.

Schedule Furnace Repair in Central Jersey

If you attempt the troubleshooting tips here but find that your furnace still blows cold air, contact Arctic Air Conditioning today to schedule repair. The faster you act, the sooner your home will feel comfortable again!

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”It is a pleasure dealing with Arctic Air Conditioning. They are professional, communicate and show up when they say they will. The technician was knowledgeable and thorough. He explained the…”

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”We have used Arctic Air since 2017 when we installed a new HVAC system. Today we had Alex Demauro come out for our yearly fall maintenance. After a not so…”

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”Highly recommend! Alex D who came and serviced our heat was great and very professional.”

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”Yet another great experience with these guys! The lady on the phone to Greg coming in and fixing my heat explaining everything ! Thanks !!”

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”I delt with Allison in the office and Eric Reed was my technician two very highly professional people extremely helpful and solved my ongoing problem Iwill always recommend Artic air…”

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”Frank was an excellent mechanic. Knew his stuff and respected my home. He installed what was in the provided kits. This unit was installed by Artic and I expected them…”

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”Alex was great. Highly recommend them for both air conditioning and heating.”

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”They replaced both our heater, filter and ac unit. These guys were great. Very polite and got the job done without issues. The work they did was clean and organized.…”

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”Great job cleaning an older HVAC system. On time, fast, efficient and charged reasonable fee.”

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”They replaced both our heater, filter and ac unit. They showed up on time in masks and gloves, and got right to work. These guys were great. Very polite and…”

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”We were extremely satisfied with the spring air conditioning tune up provided to us by Frank Santarpia of Artic Air. He went above and and beyond to answer any questions…”

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”My reason for contacting Artic Air was to assist in my HVAC inspection for my CCO Application. I felt from my initial contact to inspection it was a seamless and…”

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”During the maintenance, they found that my upstairs valve was not working... They fixed it. Job well done.”

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