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Anytime you detect an odd odor emanating from your HVAC unit, it’s a cause for alarm. That unexpected smell is a clue that either the machine is malfunctioning or that you’re in possible danger. Here’s a guide to the most common HVAC smells you may encounter and what they mean. 

3 HVAC Smells to Watch Out For

1. Sulfur

The first smell to watch out for is a release of sulfur, which people commonly compare to “rotten eggs.” This odor is usually added to natural gas, which is a fuel source for some heating units. After enough usage, machines can break down and develop leaks, allowing the gas to escape. As soon as you smell the rotten egg odor, you should evacuate everyone from your home — too much exposure can cause nausea, fatigue, and respiratory distress. Once your family is safe, call your HVAC crew so they can contain the leak and repair the device. 

2. Ozone

Another odor to watch out for is ozone, which is often reminiscent of the chlorine you would smell in a pool. The ozone smell releases when your heating unit begins to overheat. The excess of electricity and high temperature can combine to damage key parts like your wire insulation, or even trigger an electrical fire. The earlier you detect the smell, the sooner you can schedule repairs and eliminate the threat.  

3. Mold

HVACCatching a whiff of mold is not only unpleasant, but can trigger allergies and create general respiratory difficulty. If you don’t see an obvious source along a wall or ceiling, the culprit may very well be coming from inside your HVAC unit. If the condensation in the machine does not fully evaporate or drain, the lingering moisture can quickly accrue mold and mildew. Your HVAC contractor can flush the internal part, and repair the condensation system. 

 

If you notice any strange smells coming from your HVAC unit, don’t hesitate to get in touch with a top heating and air conditioning contractor like Air Rescue in Warrenton, MO. Fully-licensed and insured, this family-owned business will quickly investigate the odor and solve the malfunction. To receive a free estimate, just call the HVAC repair crew at (636) 764-0700. Learn more about the company by visiting their website

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