4 AC Smells That Could Mean Trouble

Marietta AC Company Air Vent | Anytime HVACWhen outdoor temperatures rise and you turn your AC on, all you expect in return is a breeze of refreshing, cool air. However, sometimes, that air is accompanied by a strange odor. Unpleasant HVAC smells aren’t just annoying — they could also indicate hazardous issues. If you notice any of the following four strange smells in your home, don’t ignore them. Some problems have a DIY solution, while others require that you contact a Marietta AC company to get to the bottom of the issue.

Rotten Eggs

That “rotten egg” smell is actually sulfur, which is added to odorless natural gas as a safety mechanism. If you smell sulfur coming from an AC vent, there could be a gas leak near the air ducts. AC units are usually connected to a complete HVAC system that includes a heating unit, making a gas leak a deadly possibility. Leave your house as soon as you notice a rotten egg smell. Your first call should be to your gas company, and your second to a Marietta AC company.


If your HVAC system is too small for your home, it will struggle to remove the correct amount of warm air and humidity from your space. The smell itself is annoying, but that’s not the only problem with an undersized AC unit. It will also have to work harder to cool the rooms in your home, often struggling to reach the desired temperature. This will drive up your energy costs while negatively impacting the comfort levels in your home, as well as producing a foul odor.

Dirty Feet

Stinky feet smells come from clogged, dirty air conditioners. Stagnant water that hasn’t drained properly produces musky smells, like what you’d experience at the gym or if someone put their dirty socks in the air vent. Have an HVAC professional repair and clean your unit to ensure proper water drainage, which will remedy the smell issue.


Moldy odors are a common complaint with AC units. Multiple parts of your HVAC system could experience mold and mildew growth, including the duct system and condenser coils. Don’t ignore this odor. Excessive, lingering moisture could be growing a population of mold spores in your home. Depending on the severity of the issue, the problem could be solved simply by replacing your filter, evaporative coil, or the whole cooling unit.

Count on Anytime HVAC for the Help You Need

It’s never a good sign when there are strange smells coming from your AC unit or air vents. Give Anytime HVAC a call at the first sign of unpleasant odors. We provide 24/7 emergency repair services, as well as preventative maintenance programs and free estimates on new equipment. Contact us today or call 678-606-9006 to schedule your appointment.

data-width="600" data-num-posts="10">


It's really nice when you get fast, professional service these days and that's exactly what we got from Anytime Heating & Cooling. They arrived on time, diagnosed our heater's problem quickly, and had it fixed just as fast. The technician was very polite & knowledgeable, and the charges were very reasonable - especially for an emergency repair. We will recommend Anytime to all of our friends and neighbors.


Tel: 678-606-9006
Email: info@heatingandairmarietta.com

Contact Us

135 South Ave. Suite 190
Marietta, GA 30060

Call Anytime... Any Time at 678-606-9006