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Is My HVAC Making My Home Smell Musty?

Woman holds nose while air conditioner runs.

What’s That Smell?

It can be difficult to sniff out where that strange smell in your home is coming from. Is it a sulfur-like smell from the garbage disposal? Or maybe there’s some old food hiding in the back of your fridge? Is it more of a musty smell? It’s likely coming from your HVAC system.

The best way to find the specific issue that is causing this musty smell from your HVAC is to call a technician for help. Until we arrive for your appointment, however, the DG Heating & Air Conditioning team is here to teach you some common causes of this smell.

Excess Moisture

A musty smell is often associated with mold or mildew. Both of these organisms grow due to the presence of excess moisture. This moisture could likely be developing in your air ducts or vents, allowing for the air from your HVAC to pass through and spread the smell all throughout your home.

This moisture build-up could be happening for a variety of reasons.

Leaky Air Ducts

A leak allows for the interior of your air ducts to change temperature and humidity levels. If the leak is located in your attic or crawlspace, notoriously dirty places, your ducts are more susceptible to dirt, dust, mold, and other contaminants build-up.

Clogged Condensate Line

The condensate line for your HVAC is connected to your drip pan and carries moisture away from your system. This line can become clogged with dirt and dust accumulated by the rest of the unit, and when it does, the moisture will begin to pool.

The Wrong Sized HVAC

Did you know that homes of different sizes require different sized HVAC systems? If your system is too large for your home, it will produce extra air, meaning extra moisture throughout your ducts and vents. If you suspect your system is too large for your home, give our team a call.

HVAC Services in San Jose, CA

Ditch the musty smell in your home and give DG Heating & Air Conditioning a call today at (408) 669-3496 for answers or to schedule an appointment!

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