Servicing the Chicagoland Area & Suburbs
Emergency 24/7 Service
Call Today! 888-868-6667
Call Today! 888-868-6667
Contact Us
  • 24/7

  • Give Us a Call Anytime!Emergency Service Available
  • 888-868-6667

Troubleshooting Common Gas Furnace Problems

Posted on: February 3, 2015

What’s worse than having no heat in the middle of winter? Not much if you ask us. There are a few problems homeowners commonly experience with their gas furnaces, and we’re here to break them down for you. It’s important to know what to look for when your furnace is not heating properly.

Mismatching Furnace and Thermostat

There are three basic types of thermostats: millivolt, line voltage and low voltage. Low voltage thermostats are the most commonly used thermostats in residential applications. They have to be matched to the system based on the type of furnace that is used, or you may run into problems.
The best way to make sure you’re going to have a thermostat that matches your system is to get it from an HVAC professional, or take your old one to the store with you and ask which type it is.

Squeaks, Rattles and Rumbles

In the case of a squeak, it can be related to a motor failing or making noise. Rumbling and rattling can be caused from an out-of-balance blower wheel caused by debris or age. If you have an older furnace, it may use a belt to drive the wheel that blows the air into your house. If the belt is not lubricated properly, it can make noise.
Squeaks can also be caused from air leaks. If you suspect this is the problem, check the joints where the sheet metal is connected. If you notice a small gap, you can cover it up with tape or a piece of putty.

Furnace Does Not Produce Heat

The purpose of a gas furnace is to produce heat to warm your home. If your furnace won’t heat there are a few possible causes: an improperly adjusted thermostat, the furnace may not be receiving power or gas, or the pilot light could be out. Make sure the set point on your thermostat is raised above the current temperature of the room, or else the furnace won’t kick on. Next, make sure the power to the furnace is turned on. Check your breaker to make sure the lever is in the correct position. Most furnaces don’t use pilot lights anymore, but if yours does, it may need to be relit. Follow the manufacturer’s instructions and exercise extreme caution because dealing with gas can be dangerous.

Knowing a little bit about your system, and being educated about it is the best way to stay on top of it and avoid breakdowns. In any instance where your system requires service or repairs, give us a call.
Read What Your
Neighbors Are Saying About ABC
  • “Keith and his crew were top notch. Calm/cool, trustworthy, efficient, respectful, reliable, thorough, communicative and reassuring. And at the end of the day, quality work! For the bigger projects, I feel confident knowing we have a go-to service to call.”

  • “ABC Plumbing, Heating, Cooling and Electric are fantastic. I recently used them to replace my sump pump, which had exploded! They were very friendly on the phone and Rick H., our technician was fantastic. He explained things thoroughly, we was efficient and very nice. Will definitely be using him and…”

  • “On only a day's notice, Adam came very prepared. He knew immediately what was the issue in each case. He replaced one toilet and repaired another. The bathrooms were left in great order and very clean. I am looking forward to having more work done by Adam and ABC.”

  • “ABC was reliable and professional. Mike G was our technician and was a pleasure to work with. Down to earth, no pressure and gave you a straight answer to what you needed. Felt like I got an honest appraisal and was given a great quote. Will be calling them back…”

  • “You never know for sure what you'll get when you need a contractor in a pinch. I chose ABC Plumbing out of my 2017 Best Picks Report for contractors because ABC was their top choice. After working them, I will use them again and tell everyone who needs this kind…”

  • “EXCELLENT and FAST service provided by ABC plumbing and superb work at our home provided by Tom Glaza. He fielded, diagnosed and fixed all electrical issues. Tom is knowledgeable, friendly, efficient and explains everything in detail to customer so you know what he is fixing and gives accurate up front…”

Read more
Powered by
Our Promises to You
  • Convenient for You!

    We work on your

    Schedule today
  • Background Checks!

    Drug test and back ground
    checks before hiring.

    Learn More
  • No Need for Stress!

    ABC worry-free guarantee
    at no cost.

    Get Started
  • No Surprises!

    Pricing by the job, not
    the hour.

    Contact Us