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Gas Furnace Problems

As soon as the cold weather arrives, many people call Deljo Heating & Cooling for furnace repair in the Chicago Loop and other areas of Chicagoland. Whether it’s a residence or a commercial setting, the basic causes of gas furnace problems tend to be similar, and by knowing what these are you can become proactive and prevent many of them from occurring.

Lack of Maintenance

Regular, professional maintenance is absolutely essential to keep your system working properly. Lack of professional maintenance can lead to a poorly performing unit, unexpected breakdowns and increased energy costs.

Dirty or Clogged Filters

Monthly replacement of the filter in your furnace is one of the easiest and most important things you can do to increase the efficiency and extend the life of your furnace. A dirty filter restricts the air flow through the system and makes your furnace work harder to circulate warm air.

Mechanical Wear and Tear

Your furnace contains many mechanical parts essential to the operation of the system. Wear and tear on these parts can lead to numerous problems, but a heating specialist performing regular maintenance can prevent many of these problems from occurring.

Pilot or Ignition Control Problems

Today’s gas furnaces typically contain one of two possible ignition systems:

  • Hot surface ignition
  • Intermittent pilot

The hot surface system uses an electrically controlled resistance heating element (like the filament in a light bulb) to ignite the gas burner. The intermittent pilot system is also electronically controlled but uses a high voltage electrical spark to ignite the pilot and main burner. If the pilot isn’t working, check to see if an electrical surge has tripped a breaker cutting off power to the unit. If not, unless you’re highly skilled, it’s probably best to call for professional help.

Thermostat Malfunctions

The thermostat determines when and how much heat is produced to keep you warm, and problems with the thermostat can lead to intermittent heat or no heat at all.

It’s essential to remember that furnaces and thermostats are not mix and match. Using the wrong thermostat with a furnace can cause serious problems, so with this problem it’s best to call in the professionals at Deljo.

If you need furnace repair in the Chicago Loop and surrounding areas, call Deljo Heating & Cooling at 773-829-4295. The specialists at Deljo are the best in the business and are available 24/7, 365 days a year to come to your assistance.

Client Testimonials

Read the opinions of our satisfied customers.

I always use Deljo. The entire staff is amazing from intake calls to install. They were fast, professional and gave us a fair price.

Monica OConnor Chicago IL.

Joe was great. We came home to a cold house on a Sunday night and he came out to diagnose the issue right away. Very knowledgeable, very friendly.

Kyle Sant Chicago IL.

We’ve been using Deljo for several years and have had a great experience with them. They’re prompt, reliable, and trustworthy. The technicians (David was the most recent) have been great.

Ari Telisman Chicago IL.

My hot water heater had some leaky pipes due to corroded unions. The repair took longer than I thought due to some unforeseen circumstances. Unfortunately after the repairs the water heater stopped working...

Maria Pradd Chicago IL.

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Our Service Areas

Contact Deljo Heating & Cooling today. We look forward to hearing from you and helping out with all your indoor comfort needs.

Chicago Suburbs

Chicago Neighborhoods

This or That?

With the purchase of a full system, choose from:

This : Free Tanked Natural Draft Water Heater


That: Up to a $3,000 discount

Monthly payments as low at $89/Month

Must qualify for financing through Service Finance Company

All other discounts and promotions may not be applied to this offer. All installations must be completed by April 14, 2024 to qualify.

Promotion can be redeemed only after moving forward with proposal or equipment replacement. Can be scheduled via email, phone, or website.