7 Reasons Your Furnace Isn’t Working

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Are you having problems with your furnace? If so, you’re not alone. A lot of homeowners experience furnace problems every year. But don’t worry, we’re here to help. In this article, we’ll give you seven reasons why your furnace might not be working. We’ll also provide some tips on how to fix the problem. So read on for more information.


1. There’s A Problem With The Gas Line

If you are noticing that your furnace is not working as well as it usually does, or if you smell gas around your furnace, it may be time to call a technician. There are a few reasons why your furnace might not be working properly, but the most common problem is with the gas line. A technician can help you determine whether the problem is with the gas line or with another part of the furnace.


If there is a gas line issue, the furnace will not be able to pull in enough air or fuel to run efficiently. This can lead to uneven heating and poor indoor air quality. Some of the signs that your furnace has a problem with the gas line include an unusually loud noise when it starts up or shuts down, orange flames instead of blue ones, and sooty deposits on the furnace’s exterior.


2. The Thermostat Is Faulty

There are a few reasons why your furnace might not be working, but one of the most common reasons is a faulty thermostat. If you’re not sure whether or not your thermostat is to blame, here are a few symptoms to look out for:


  • The furnace runs constantly, even when the house isn’t cold.
  • The furnace doesn’t turn on at all.
  • The furnace turns on and off repeatedly.


If you’re experiencing any of these problems, it’s likely that your thermostat needs to be replaced. But before you do that, it’s important to make sure that the basics of furnace problems are taken care of. Make sure your filter is clean, and check to see if the pilot light, gas lines, and other components all look good. If everything looks okay there, then it’s time to take a closer look at the thermostat itself.


3. The Airflow Is Blocked

There are a few reasons why your furnace might not be working, but one of the most common is blocked airflow. If you suspect that your furnace isn’t working because of a blocked airflow, there are a few things you can do to troubleshoot the problem.


The first thing to check is the filter. A dirty or clogged filter can cause the airflow to be blocked. If the filter is dirty, replace it and see if that solves the problem. If the filter isn’t the problem, then you’ll need to check the ducts and vents. Make sure that they’re not blocked and that there’s nothing preventing the air from flowing through them.


4. The Air Filters Need Changing

If you suspect that your furnace’s filters need to be changed, there are a few things you can check to confirm. First, take a look at the filter itself. If it’s dirty and full of dust, it’s definitely time for a change. You should also listen for any unusual noises coming from the furnace. If it’s making strange sounds, it might be because the filters are clogged up and need to be cleaned or replaced.

5. The Ignition Sensor Is Broken

There are several reasons why your furnace might not be working, but one of the most common is a broken ignition sensor. If you’re not sure whether or not your furnace has a broken ignition sensor, there are a few telltale signs you can look for.


One of the most obvious is that your furnace won’t turn on at all – if it doesn’t start up when you switch it on, there’s a good chance the ignition sensor is broken. Another sign is that your furnace might start up, but then shut off after a few minutes. If this happens, it’s likely that the ignition sensor is having trouble staying lit.


6. The Air Isn’t Heated

One of the reasons a furnace may not be working is that it’s not receiving power. This could be due to a tripped breaker, a blown fuse, or a defective thermostat. If the furnace isn’t producing any heated air, make sure it’s getting power by checking these things.


If the furnace is getting power and it’s still not producing heated air, there may be a problem with the pilot light. The pilot light is responsible for igniting the fuel in the furnace, so if it’s not working, the furnace won’t work either. If you think the pilot light may be the problem, you can try relighting it.


If the pilot light is working and the furnace still isn’t producing any heat, there may be a problem with the combustion chamber. This is where the fuel is burned to create heat, so if there’s something wrong with it, the furnace won’t work properly. If you think there may be a problem with the combustion chamber, you should call a professional to have a look at it.


7. Low Refrigerant 

If you’re noticing that your furnace is having trouble starting up, or if it’s not heating your home as efficiently as it used to, there’s a good chance that the issue may have something to do with low refrigerant. If this is the case, you’ll want to call in a professional to take a look and diagnose the problem. Low refrigerant can be caused by a number of things, from a leaky compressor to a clogged filter, so it’s important to get it fixed as soon as possible.


If your furnace isn’t working, it’s important to call a professional right away. There are many reasons why your furnace might not be working, from a clogged air filter to a broken thermostat. Our team of experts can help diagnose the problem and get your furnace up and running again in no time. So don’t wait – give us a call today!

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Superior Mechanical Services, Inc. began in 1948 as a family-owned business with a vision to provide value-minded service with a down-to-earth approach to customers throughout the San Francisco Bay Area. As the premier Commercial and Residential HVAC Service provider for Livermore, Dublin, and Pleasanton, Superior Mechanical can do everything from heating and air conditioning to boiler and plumbing services. Our certified technicians will ensure every part of your project is done right using a careful checklist to guide and test each step. At the end of your appointment, we’ll show you how to get the most out of your new system and give you tips on maintenance so it lasts for years to come. Contact us today for amazing service tomorrow!

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