5 Common Furnace Problems That Are Reported By Homeowners

5 Common Furnace Problems That Are Reported By Homeowners

Furnaces are a vital part of our homes, but they can break down at any time. When they do, we notice the difference pretty quickly. That’s why it’s important to know how to identify Common Furnace Problems.

Also check:  Tips for Conserving Heat in the Winter

Top 5 Reported Problems with Residential Furnaces

The top five problems with residential furnaces, as reported by the residential heating and air conditioning industry, are as follows:

  1. Blower Not Working or Running Slow

5 Common Furnace Problems That Are Reported By Homeowners

Blower problems account for approximately 63% of all furnace service calls each year. The majority of blower motor failures occur within the first few years after installation and can be prevented by having a qualified professional install your furnace and provide an initial tune-up and safety inspection.

  1. No Heat

5 Common Furnace Problems That Are Reported By Homeowners

Nearly 25 percent of all furnace service calls involve no heat. This problem is typically due to airflow issues such as dirty filters, blocked registers, thermostats set too low, incorrect wiring/voltage conditions, or malfunctioning limit controls. However, no heat can also be caused by low gas pressure, a clogged heat exchanger, or a loss of power to the furnace.

  1. Burner Not Lighting

5 Common Furnace Problems That Are Reported By Homeowners

In some cases, the burner fails to light because of faulty components such as electronic spark ignition modules, broken wire terminals within the control board, dirty flame sensor ports on the burners, and defective limit controls that do not allow enough voltage to reach the spark ignition system. Dirty flame sensors can be caused by dust build-up in the area near the electrodes or leaking transition fittings where wires enter or exit an electrical box within your home. An oily residue can form on these devices during normal use causing false flame signal errors. Gas Leaking or flow problems are also possible with the issue, which is usually associated with hot surface ignition systems.

  1. Excessive Heat

5 Common Furnace Problems That Are Reported By Homeowners

An overly hot furnace is typically the result of blocked or loose insulation on gas or oil furnaces or ductwork that is too small for the system. A furnace’s superheat safety control will shut down the burner if it senses high temperatures in your home, resulting in a call to your local HVAC professional. When servicing superheat devices, always wear proper protective equipment and never remove wires from any part of the unit when it is operational.

  1. Water Leaks Around Doors & Windows

5 Common Furnace Problems That Are Reported By Homeowners

Condensation can occur anywhere air flows through your venting systems, such as exhaust vents, chimneys, and registers within each room in your home (ducts). Constant water damage due to condensation can affect the performance of your furnace and air conditioning system, as well as be a biohazard for humans if mold begins to grow. Low indoor humidity can also contribute to this condition.

Also check: Should the Pilot Light Always be On in a Gas Furnace


Furnace repair can get expensive if you don’t see the problem early. If you’re experiencing problems with your residential furnace, consider calling K2 Mechanical for a tune-up. K2 Mechanical is one of the most trusted HVAC companies in Deer Park and has a lot of experience with residential furnaces. If you’re looking for furnace repair today, schedule an appointment with their friendly staff now!

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About the author

Mobeen Shahid

Mobeen Shahid is a Mechanical Engineer with two years of experience in the HVAC industry. His passion is analyzing HVAC issues, and he works relentlessly to devise customized solutions. He has been in the industry long enough to know the ins and outs and ensures that areas are optimally heated, cooled, and ventilated.

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