musty smell

From musty smells to electrical issues to lingering household odors, discover five reasons your HVAC system smells and when to take action. HVAC system seems to be doing more harm than good in the odor department, you may need professional help.

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Musty Smell

Just because you haven’t noticed black or green spots, the telltale signs of mold, doesn’t mean that this fungus don’t lurk in your home. If your HVAC system tends to propel a musty smell throughout your home, there’s a good chance it’s harboring mold or mildew.

While mold and mildew don’t usually signal an HVAC emergency, they are good indicators of indoor air quality issues. Fortunately, the Western Hills Heating & Air Conditioning team can help. Schedule an appointment with our experienced technicians, and we’ll find out where mold is hiding in your HVAC system. Depending on the severity, a simple maintenance program could prevent mold from returning.

Electrical Issues

The smell of burning plastic or electrical components are enough to send most homeowners into high alert and for good reason. If you suspect that this smell is coming from the HVAC system, you’ll want to take action right away.

How to Clean Window Ac Unit that Smells Musty or like Dirty Old Sox! -  YouTube

First, turn off the system altogether. Next, call our team for an emergency appointment. Electrical issues aren’t HVAC problems that you should attempt to fix on your own, so always leave this to a professional. Whether your system needs a new part or you need a new system altogether, our team will have you up and running as soon as possible.

Clean Coils

Coils are responsible for heat exchanges in the HVAC system and come into regular contact with the outside air circulating throughout, so it’s essential they are kept clean. HVACs have two main sets of coils: the interior, evaporator coil; and the exterior, condenser coil. However, it’s most likely that a dirty evaporator coil is the culprit. To alleviate smelly odors, as well as prevent a build-up of allergens, dust, grime, and spores in the HVAC’s coil system, be sure the coils are routinely cleaned.


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