Does Your HVAC Unit Sound Haunted? 5 Spooky Sounds Your Unit Might Make

Are you noticing spooky sounds coming from your furnace? If your HVAC unit sounds haunted, it’s important to know what these sounds are trying to tell you and what you should do to fix them. Here are the top 5 spooky sounds your unit might make.

1. Banging, Popping, Booming, Oh My!

Do you ever hear a loud banging, popping, or booming sound when your furnace first turns on? Some homeowners say that it sounds very similar to a gunshot. There could be three likely reasons for these sounds, including:

• A Dirty Burner: Your burner could be dirty from all that dust and dirt build-up.
• Metal Ductwork: If you have metal ductwork, the ducts can expand and contract when the temperature changes – which is entirely normal.
• Gas Build-Up: Gas can build-up in your combustion chamber when the gas burners inside your furnace don’t ignite on time.

2. Whining or Squealing

A whining or squealing noise is likely not an animal, but it could still be spooky. If you hear this noise coming from your HVAC unit, it’s likely just your blower belt. Over time, it can experience some wear and tear that causes it to misalign or loosen. We recommend you schedule your annual maintenance and address this at your next appointment. You may find that your blower belt just needs some lubrication. However, if there is a more serious issue, your technician will be able to inspect it for you.

3. Rattling

There are typically two reasons for rattling noises inside your furnace. A rattling noise may indicate a loose panel or a loose screw in your HVAC unit which is usually an easy fix and not something to worry too much about. On the contrary, it could be a leak or crack in your heat exchanger – which is very dangerous if not addressed quickly. Faulty heat exchangers can end up leaking carbon monoxide into your home, which can be deadly. If you hear this noise, don’t wait to contact your local HVAC professionals.

4. Whistling

No, the whistling sound is not an indication that your house is haunted. It’s usually due to restricted airflow from a clogged air filter. According to the EPA, it’s recommended you change your air filter every 3 months – at the very minimum. We recommend you try to change your air filter to see if the noise goes away. If it persists, contact your HVAC professionals for further assistance to figure out the cause of this sound.

5. Humming

While it’s normal for most HVAC units to produce a low humming sound during operation, it could be an indication of a more serious problem if it becomes noticeably loud. Usually, this is due to an issue with your blower fan or capacitor. To prevent further damage to your fan, have a technician take a look and see about repairing your blower motor right away.

Schedule an HVAC Maintenance With the Professionals at Freedom Air in Cocoa, FL Today!

you need to schedule a diagnostic, repair, replacement, or maintenance, our team of experts are here to help with all your HVAC needs! Contact us today at 321-631-6886 or online here.