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Furnace Problems Range From Mechanical to Faulty Thermostats

A customer called Arco Comfort Air because his furnace was not producing enough heat, and his thermostat wouldn’t rise above 73 degrees. This is a pretty typical problem we see in furnaces throughout the winter, and so you can try to avoid them if it happens to you, we’re here to give you a list of other common heating system troubles we come across.

Top Eight Most Common Furnace Problems and Their Causes

Noisy furnace: This could be caused by loose access panels, worn or damaged belts, blower
belts that were too loose or too tight, a motor that needs to be lubricated,
and/or dirty burners.

Furnace that won’t run: The furnace itself could have no power, the power switch could be off,
the motor could be overloaded, the pilot light might be out, or you could
be out of gas.

The blower won’t stop running: The blower control or limit switch could be set wrong, or you’ll
need to have a professional come and adjust the limit control.

Your home isn’t getting enough heat: This could be caused by a number of things – the thermostat is
set too low, the filter is dirty, the blower is clogged, the heat registers are closed or blocked, the blower belt is loose or broken, or the burner could be dirty.

Speaking of thermostat, that could be the problem: The batteries could be low and need replacing, it could be the power supply to the furnace, or the thermostat itself might be broken. If that’s
the case, you will need a thermostat replacement.

Furnace is cycling on and off: You may have a dirty filter or a motor that needs lubrication.

Pilot won’t light at all: The opening to the pilot could be blocked, or you could have no gas.

The pilot light won’t stay lit: You could have a loose or faulty thermocouple, the pilot flame is set
too low, or you could have a faulty electric pilot.

No matter what furnace problem you are experiencing, trust that Arco Comfort
Air can help. Call us today!

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What Are Customers Are Saying

Preston Gordon you are the man. Thank you for fixing bathroom and finding my lost hidden treasures.

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Katie Lock

Katie Lock

July 24, 2026

Thank you for the great and friendly service Shavine. I appreciate all the advice and friendly attitude.

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Christen Keith

Christen Keith

July 23, 2026

Princeton was amazing. He diagnosed the issue quickly and solved it without fail. Would recommend.

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William Keys

William Keys

July 23, 2026

Cliff did a great job with my emergency breaker job he was quick and dedicated to getting it done to helping me restore my power. I really appreciated the swift response.

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Derek Murphy

Derek Murphy

July 22, 2026

Reggie was absolutely fantastic. Very knowledgeable and explained everything in simple terms. Would definitely recommend him for any of your electrical needs!

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Christian Mayfield

Christian Mayfield

July 21, 2026

Princesten was wonderful! He was very thorough, helpful and extremely professional. We have had many service professionals come through our home and he is by far one of the most professional and respectful people I’ve ever had.

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Elisa Race

Elisa Race

July 20, 2026

Amazing work today by Evan and Shavine. They were able to fix a problem no one else was able to fix. Will definitely use these guys again

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Darren Eaddy

Darren Eaddy

July 20, 2026

Shavine and Evan were very knowledgeable and were able to fix the issue at hand . They answered all our questions and made sure everything was complete before they left .

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Char E

Char E

July 20, 2026

Outside GFI outlet not working. Could not reset. Within a short time problem was resolved. Electrician Shavine was excellent. I would highly recommend Arco and their service provided.

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Bob Ochsner

Bob Ochsner

July 20, 2026

We originally called Acro for one issue but ended up with getting our very out dated breaker boxes replaced which was definitely needed. Shavine M. and Evan S. were both our electric technicians for our full job. Shavine M. was the first technicians on site and was very prompt. The gentlemen let us know before hand the amount of time the power was going to be out and we gave them the space to work. After the work was completed, Shavine gave a walk through of the work completed today and a explaination of the next steps after. We are very happy with the work completed and Shavine and Evan were a pleasure to have as technicians on the job.

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Jasmin A

Jasmin A

July 18, 2026

Great experience! Quote and installation/service performed same day when others were weeks out just for quote appointment. We had an attic vent fan hooked up and some landscape lighting repaired, but seems they could really do any/all electrical projects you would need.

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Marc Mellion

Marc Mellion

July 16, 2026

Andrew Corrothers with Arco was very polite and answered questions that I had when he came for my A/C maintenance.

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Sherry Runner

Sherry Runner

July 15, 2026

Shavine switched out/repaired more outlets and switches in our home than I can count! He also installed several light fixtures for us and they work and look outstanding ! Now all of our lights and outlets are functional and I am so happy with the work that was done . It was a very big job and Shavine worked finished it all in a day ! I highly recommend Shavine with your electrical needs!

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Susan Simpson

Susan Simpson

July 13, 2026

We had our AC serviced by Arco. The first day we had a technician. He said he had to order parts and would return the next day. The next day we got a new technician EUGENE and he was so professional, h shared what he was doing, he was friendly, and insightful. We had to replace our thermostat. He was quick and proficient. I highly recommend Arco but specifically Eugene. Thank you.

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Tamika Glenn

Tamika Glenn

July 11, 2026

They are reliable and always show up as scheduled. Shavine did a great job installing our motion sensor floodlights. I would hire them again for any electrical work.

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Kern Jolibos

Kern Jolibos

July 10, 2026

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