Winter is coming and soon, you will be turning on your furnace for the first time in months. You might notice that it’s not working as well as it used to, or maybe that there are strange sounds coming from your vents. These can be signs that you need expert furnace repair. You may be reluctant to call a professional to take a look because you feel like it might be expensive. 

4 Signs You Need Professional Furnace Repair

In reality, the benefits of having your furnace repaired by a professional far outweigh the costs in the long run. Here are four signs you need professional furnace repair. 

A Build-Up of Dust or Other Particles in the Heating Vents

A build-up of dust or other particles in the heating vents might be an indicator that it’s time for professional furnace repair. There are several reasons why this occurs, but they all point to regular maintenance being needed. A bad filter can cause a backup of dust and debris in the vents, while a leaky duct could be letting outside air enter your furnace. In either case, it’s time to have an expert take a look. A leading provider of top ranked furnace installation services in Temple notes that an annual furnace inspection is always a good idea, as it can help prevent future problems with your forced air heater and save you the stress of dealing with emergencies.

Unusual Sounds From the Heating Vents

Unusual sounds are a sign that there is something wrong with the furnace. If you start hearing strange noises coming from your heating vents, call someone to come inspect what’s going on. It could be a simple fix or a much bigger issue. Some of the problems that could cause these sounds include:

  • A motor that’s struggling to start up
  • Metal parts rubbing together 
  • An installation problem that is causing a malfunction
  • Vent flaps might be stuck shut due to lint build-up
  • Broken parts or lose components




In most cases, unusual sounds may indicate that something is wrong with your furnace or venting system. While you can do some DIY furnace fixes, it’s important to have it checked to identify and fix any major problems.

Unpredictable Bursts of Heat

A furnace that spastically and unpredictably bursts out heat can cause some serious problems in your home. This mostly happens because of a dirty air filter or a clogged heat exchanger and can cause discomfort and high energy bills for you. It can also happen when the furnace is too close to a main source of heat, such as an oven or other heater. To avoid this issue, always ensure that the furnace’s air filter is clean and replace it regularly, as per the manufacturer’s recommendation. Additionally, you should have your heating system cleaned every year by professionals to get rid of carbon build-up or other debris that can cause these issues.

4 Signs You Need Professional Furnace Repair - repairman

Heat That Stays on Constantly, Regardless of Your Thermostat Settings

If your furnace is on constantly, regardless of the temperature setting, you might have a thermostat that is not working correctly. Thermostats should typically shut off when they read in the range of 78 to 80 degrees Fahrenheit and turn back on when they sense temperatures dropping below this threshold and vice versa. 

Without functioning thermostats, heating systems may stay on at all times, which wastes energy and money.

  • One common cause of constant heating in homes is when water condensation builds up inside the heating system, preventing the furnace from turning off.
  • Another cause of this problem is that your current thermostat may just be broken or faulty in some way. It could be malfunctioning and unable to detect changes in room temperature appropriately. 

If you notice multiple problems with your heat settings throughout the day (e.g., sudden drops down into the 50s without a drop in temperature outside), this could also be a sign that you have faulty furnace equipment that needs an expert to troubleshoot and identify the problem. Have it checked and repaired. If your current furnace is more than 15 years old, it’s probably time for an upgrade. 

Don’t Ignore Furnace Issues Until It’s Too Late

While everyone knows they need to have their heating system serviced once a year, most people don’t realize that looking out for simple signs that indicate the furnace needs repair could save them from more expensive problems down the line. Don’t wait until it’s too late to get your furnace repaired, because it could cost you far more down the road for a full replacement.