It s likely that mold developed in the unit over the winter and you didn t notice it until you turned on.
Mold in my central air conditioner.
Molds thrive when the humidity levels exceed 70 percent.
When black mold grows on walls floors carpets and so on it s relatively easy to spot.
As soon as you switch your heater or air conditioner on the microscopic particles start floating and blowing out with air into the room.
Secure ducts check the ducts in the basement or attic for leaks while the blower is on.
I often find mold on the exterior of air conditioning systems more often than the interior.
Or an hvac technician might discover the mold when performing routine maintenance or repairs.
When mold grows within the central heating cooling and ventilation system there are high chances that every room connected to the vents receives generous amounts of mold spores.
Allow the solution to sit on these surfaces for approximately 10 minutes then rinse with water and a damp cloth.
Moisture is the building block for mold and mildew growth which can cause a musty smell from your air conditioners.
Let the unit filter grille and metal cover dry completely.
You may also be able to see the presence of mold around drip pans air ducts and within intake vents.
If you had simply left the air conditioning running it would have cooled the home and removed moisture from the air and circulated and filtered the air.
Mold does have a tendency to grow inside air conditioners that sit unused for a while.
Also clean the air conditioner front grille if it has mold on it.
Mold spores naturally traveling in the air attach to damp areas then begin to grow.
A vacant house also receives little or no sunlight through closed shades and no air movement with the fan off and the doors locked.
Reassemble the air conditioning unit and plug it back into its power source.
However when black mold starts growing in your air vents things get a little trickier.
Mold can be one of the negative effects of floods or can indicate a problem with your air conditioning system.
Here are some common reasons that could be causing a mildew odor to develop in your ac.
One of the first signs that black mold is growing in your air vents is a distinct musty mildew like smell in specific rooms or even throughout your entire home.
Mold is common in environments that have dirt dampness and darkness.