FAQ: Why Isn’t My Furnace Generating Heat?

As trusted heating experts in the South Jersey area we get a whole lot of questions. But of all of them come the winter season the one we typically hear the most has to be “Why isn’t my furnace blowing warm air” or “why isn’t my furnace generating heat”.

And it’s honestly no surprise! Despite the fact that it’s either totally not doing it’s job, or just don’t the exact opposite of what it’s supposed to, there are actually a ton of potential causes. Is your furnace trying to make its debut as an ice machine? Follow along with the team at McAllister…The Service Company while we discuss the most common causes!

The Many Causes of Furnaces Not Heating

We weren’t kidding when we said there are a lot of possibilities. Because of that we’re going to try to touch on them all, but if you’re confused or don’t see an obvious cause feel free to contact a McAllister expert online. We would love to help you out!

The most common causes include:

  • A dirty air filter. You’ll notice that a large portion of the potential causes deal with various forms of airflow restriction. This is because when airflow is obstructed in a heating system it causes a) heated air to not move properly, and b) creates pressure problems in the unit. So be sure to check your filter first! It’s an easy fix to handle all on your own.
  • Control mistakes. Sometimes the brush of an elbow or the misguided pranksterism of a child can be the root of your issue. Before you shell out for a furnace repair call, be sure to ensure your settings are correct and that your fan is set to “on.”
  • Blocked vents. Vents blocked by cloth, furniture, dust and grime, or vermin can all cause the issues we mentioned in the air filter description. Familiarize yourself with the location of all of your vents so you can check them fast if you have a heat generation issue!
  • Blower motor failure. No blower motor, no blowing warm air. Blower motor failure is hard to suss out on your own, so you’ll likely end up calling on an expert for this one.
  • Duct leaks. It’s possible that your ducts have holes, dents, or other leak-causing problems. If you haven’t had your ducts checked in a few years, you should schedule an inspection. Just one less thing to worry about, and you’ll get an energy-efficiency boost for your troubles!
  • Short-cycling. An incorrectly sized or overheating system can cause short-cycling, meaning the furnace only kicks on for a couple minutes at a time at best. Both a too large and a too small furnace can cause this issue.
  • Pilot not lit. If you have a gas furnace it’s wise to check your pilot if you’re not getting any warm air. A deactivated pilot can cause the furnace to heat poorly, or with modern furnace it’ll cause them to shut down completely.

Furnace Repair in Somers Point

Looking for a service team with the skills and training to bring you reliable furnace repair? If so you’re in the right place! We’ve been offering leading furnace services for years, so call us now or contact us online to schedule service!