6 Common Furnace Problems That Need to Be Repaired

Furnace Problems : Here are the common furnace problems that you might experience that require professional repairs to fix. It’s recommended that you replace your filter

Dealing with heating issues is always a pain, especially if you live in an area that gets very cold in the winter. As such, it’s better to be prepared for any upcoming issues with your furnace than to deal with the problems as they come. If you’re looking for a Winchester heater repair, there are a ton of companies available that can provide you repair services in an emergency situation. However, it’s also worth contacting them even if you’re not in immediate need of repair so you can have preventative care and maintenance done to avoid any problems.

Here are the common furnace problems that you might experience that require professional repairs to fix:

1. The Furnace Not Producing Heat

What’s the point of having a furnace if it can’t provide you any heat at all? When this issue is present with your furnace, you need it repaired immediately.

First, make sure that the furnace is turned on and the thermostat is set to ‘heat.’ After doing so, try to moving the dial up a few degrees to check if there’s a noticeable change in the temperature or if you can feel any hot air blowing. If there are no changes after doing these steps, you could check if the circuit breaker or fuse was tripped or blown.

If this doesn’t result in any change or improvement, it’s time to call a repair technician as there could be a bigger underlying issue.

2. The Furnace is Not Producing Enough Heat

If you set the temperature to the highest degree possible and it’s still not warming up your house, there’s a problem with your furnace that you need to look at immediately.

One of the potential reasons why your furnace isn’t heating up properly is because of a clogged filter. You need to make sure that the air filter is clean and is in good condition. It’s recommended that you replace your filters every 3–12 months, depending on the size of your filter. But, if you can’t see the filter material itself, even if it hasn’t reached its deadline, you should replace it immediately.

Again, if this change doesn’t resolve the issue, call your local repair company to come check out your furnace.

3. The Furnace Does Not Blow Air

When the furnace is turned on but isn’t blowing any air, you should check the inspection window on the furnace. You have to make sure that the blower is debris-free and is completely free to blow air. Along with this, there should be a flashing green or red light.

If the flashing light is green, the furnace is okay and might need some cleaning. However, if the light is red, you should call for service. On the other hand, if there’s no light flashing through, there might be a problem with the furnace’s thermostat, the blower motor, the run capacitor, furnace control board, or transformer. You should have them checked if there’s an ongoing issue and have them fixed immediately.

4. Noisy Furnace

When you’ve turned the furnace on and it produces noisy sounds such as rumbling, squeaking, and rattles, you should check it immediately as those sounds aren’t normal for furnaces.

The sounds may be indicating that there are mechanical problems, airflow reductions, or a clogged burner. Here the common sounds that you should look out for and what might cause them:

  • Rattling Noise – Loose panels
  • Squealing Noise – It could be a belt that connects the motor to the fan that has slipped or that the fan needs to be replaced.
  • Grinding Noise – The motor bearings need repair.
  • Pinging or Popping Noise – It could be a thermal expansion wherein the ductwork expanding and contracting as it heats and cools.

When you hear any odd noises, you should identify which sound they are and try to resolve it. But if the issue persists, you should call a furnace repair technician immediately.

5. Smelling Gas

If you’ve turned on your furnace and you smell a strong odor of gas, you should immediately leave your home and contact your gas utility company. This is very hazardous to your family so you should make them stay far away from your house as much as possible.

6. The Furnace is Not Operating

When your furnace is not operating, the first thing that you should do is to check the safety switch on the furnace door.

The safety switch prevents the burner and fan from turning on while the access panel is removed. When you open the door, a safety switch is activated. If it stays up after you close the door, it can inhibit the functioning of your furnace. This may be due to the door being misaligned and not entirely closed, so be sure to check that.


Having to have a furnace installed in your home or your company provides a ton of great benefits, most especially when it’s wintertime. With the amazing benefits of a furnace on the table, you should be on the lookout for any common problems that may arise and you should know the first thing that you can do to repair it. If you’ve tried everything you can but your condition hasn’t changed, you should call a furnace repair technician. Along with this, you should know how to maintain your HVAC and furnace to avoid any possible problems in the future.

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