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Furnace Problems Range From Mechanical to Faulty Thermostats

A customer called Arco Home Services 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

Andrew came out and inspectioned my furnace to make sure it's ready for the upcoming Cleveland Ohio winter. He showed me the parts that needed replaced and explained what those parts do. Then he went over different options for financing.

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Angel Black

Angel Black

October 2, 2026

I had a great experience with Shaun. He was professional, knowledgeable, and clearly knew his stuff. He quickly diagnosed the issue, explained everything clearly, and completed the repair efficiently. What stood out most was his expertise and attention to detail. It’s not often you find someone who is both highly skilled and genuinely committed to providing excellent service. I highly recommend Shaun to anyone. I will definitely use his services again in the future. Thank you for the outstanding work!

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Inday R

Inday R

October 1, 2026

Tech Andrew came out for our seasonal furnace inspection. He was efficient and knowledgeable. He maintained the great experience I’ve had using Arco.

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Ian Kish

Ian Kish

October 1, 2026

Cliff was great. on time and made sure my new generator is working perfectly. Highly highly recommend

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Ben Deccola

Ben Deccola

September 30, 2026

I had my furnace installed by arco and it has been great. When I had an issue they came out same day. Andrew was very knowledgeable and quick with his diagnosis. Had my issue solved within minutes and offered me multiple solutions for prevention.

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Jane Howell

Jane Howell

September 30, 2026

Great service. Recieved a quote and the issue fixed same day and very friendly and professional servicemen. Would highly recommend and affordable.

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Victoria Philpotts

Victoria Philpotts

September 29, 2026

Andrew is great. We have had a lot of good technicians service us, but we've never had a person so thorough and explain everything so clearly. He also has a really great personality.

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Frank

Frank

September 29, 2026

Jesse was awesome, and did a great job on my PM service. I would highly recommend them and him!

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Richard Gutch

Richard Gutch

September 28, 2026

We contacted Arco Home Services for plumbing repairs. Jacob Adams was our tech. Jacob showed up on time and gave us an estimate for the multiple items we wanted done. He was professional, knowledgeable, and personable. He explained all steps and issues that were encountered and spent close to a day and a half completing the many repairs we requested. He knew what he was doing and worked diligently to make sure that the work was done timely and correctly. I can say it was a pleasure to have him complete the work we needed which included installing a new utility tub with new faucets and shut off valves, new bathroom faucet, installing a new sink with faucet and all plumbing in the second bathroom, repairing a toilet flange and reseating the toilet along with multiple other time consuming items to bring the plumbing in our older home into good working order. I can highly recommend Jacob's work and would ask for him again if I needed any additional repairs done. Thank you Jacob for a job well done.

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R. E. Tesmer

R. E. Tesmer

September 26, 2026

Andrew came out did an outstanding job serving my furnace. I had horrible experiences in the past with a different technician, but Andrew came in and turned my opinion around. Great job !

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Tina Andears

Tina Andears

September 25, 2026

We had a limb fall on our main line and Domenic came out and replace the entire unit. Evan came out and replaced a basement unit. Both were very efficient and polite.

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Annette

Annette

September 25, 2026

Andrew came out and performed yearly maintenance on my furnace. He arrived on time and was very efficient. He informed me my system was in good condition and I am prepared for winter. Highly recommend!

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Kathryn Pierce

Kathryn Pierce

September 25, 2026

The ARCO rep Andrew, that took care of the A/C inspection was knowledgeable, professional and courteous! He answered questions completely!

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Giyate Giyate

Giyate Giyate

September 25, 2026

Kellyed Reyes and Shaun McAlpin were great! Assessed the issue, and shared with me my options.

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Hallie Johnson

Hallie Johnson

September 24, 2026

Arco representative Andrew Corrothers came out to inspect our AC unit and did a great job detailing the issues with our unit. Andrew also provided informative options for our unit and potential replacement options. Definitely a job well done by Andrew. Note: There was no charge for visit, part of my service contract.

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John Alexander

John Alexander

September 24, 2026

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