Air Purification & Filtration in Sherman Oaks, CA

The Coil Is Often the Problem, Not the Air Outside

Filtration is usually discussed as a way of keeping outdoor contaminants out. That is valid, but it misses the source that produces the most complaints in a climate like this one. Sherman Oaks runs its cooling for a very long season, and through all of it the evaporator coil sits wet — condensation forms on it continuously by design.

A dark, permanently damp surface with a steady supply of organic dust passing over it is an excellent growth medium. What develops there produces the faintly musty smell people notice in the first seconds after the system starts, and because the coil sits downstream of the filter, every air filter in the world does precisely nothing about it. The air is being cleaned and then passed over the contaminated surface on its way to the rooms.

What Actually Addresses It

Treating the coil requires something other than better filtration:

• UV Germicidal Lights: Installed to irradiate the coil surface, which is the targeted solution to this problem.
• Professional Coil Cleaning: Removes existing growth; the necessary first step before any preventative measure.
• Condensate Pan Treatment: Clearing and treating the pan, where the related growth accumulates.
• Drainage Correction: Standing water in a pan that does not drain properly keeps the problem returning.
• Better Upstream Filtration: Genuinely helps, but as prevention of future fouling rather than a cure.