Who Should I Call for Mold in My HVAC System?

You've spotted dark specks around your AC vent, or the air suddenly smells musty every time the mini-split kicks on. Your first instinct is to call your HVAC technician — but is that actually the right call? In Los Cabos, where humidity and salt air push mold growth into overdrive, choosing the wrong professional wastes time and often makes the contamination worse.

HVAC technicians handle mechanics, not contamination

A licensed HVAC technician is trained to service refrigerant, coils, blowers, and drainage — the mechanical side of your cooling system. Many will happily wipe visible mold off a coil and reinstall the cover, but they aren't trained in containment, HEPA filtration, or air testing. Cleaning a colonized coil without negative-air containment aerosolizes millions of spores into your home. Call your HVAC tech to fix a refrigerant leak or repair a broken condensate pump — not to eliminate mold.

Duct cleaners clean dust; they don't remediate mold

Standard duct cleaning removes accumulated dust and debris with brushes and vacuums. That's valuable maintenance, but it isn't remediation. If mold has colonized the interior of your ductwork, insulation, or drain pan, brushing spreads spores rather than destroying them. Reputable duct-cleaning companies will refer you out the moment they see active mold growth.

Certified mold remediators do the full job

For visible mold, musty odors, or occupant health symptoms tied to your HVAC, you need a certified mold remediation company. That includes a full inspection with moisture mapping, HEPA-contained removal, coil and duct sanitization, ozone shock treatment, and post-remediation air testing. Look for OSHA and Cal OSHA credentials, transparent protocols, and a willingness to share lab results.

When to call ProZone

If you suspect mold in your HVAC and want a certified team to handle it correctly the first time, message us on WhatsApp at +52 624 141 6627. Founded in 2014 after Hurricane Odile, ProZone is OSHA and Cal OSHA certified and has remediated some of the most iconic homes across Los Cabos, San José, and Todos Santos. Ask us — we know how.