Air Duct Cleaning in San Diego, CA

How the inspection works

Before any cleaning is quoted, we look at your system: where the air handler sits, the supply registers and return grilles, and the inside of accessible duct runs where they can be reached without damage. The goal is to see whether there is substantial visible mold growth, signs of vermin, or excessive dust and debris — the situations EPA identifies as reasons to consider cleaning.

If the inspection doesn't show a clear reason to clean, we'll say so. EPA notes that if no one in the household suffers from allergies or unexplained symptoms, and a visual inspection shows no large deposits of dust or mold, having ducts cleaned is probably unnecessary.

The inspection is a visual check for cleaning purposes. It is not an HVAC performance test, a mold test, or an air-quality test.

• Where the ducts run and how each section can be reached
• Duct material — sheet metal, flexible duct, or fiberglass duct board — which affects which cleaning methods are appropriate
• Visible damage, disconnected runs, or moisture, which call for a repair contractor rather than cleaning
• Underlying causes such as leaks or pests, which EPA says must be corrected first or the problem will likely recur

Source: U.S. EPA — Should You Have the Air Ducts in Your Home Cleaned?

Access: attics, basements, crawlspaces, and multi-unit buildings

How the system is reached shapes the time and equipment a job needs. Air handlers and duct runs are often in attics, basements, crawlspaces, closets, or garages, and the technician needs a safe path to them.

Attics and crawlspaces need a clear, safe entry point, such as a hatch, pull-down stairs, or crawlspace door. Tight clearances, deep insulation, or unsafe footing can limit which runs can be reached; anything that can't be reached safely is noted in your estimate rather than skipped without mention.

Basements and utility rooms need a clear path to the furnace or air handler and to any exposed trunk lines.

Exterior and roof equipment: most home duct systems are serviced from inside. Rooftop units and ducts that pass through the roof are evaluated case by case, and roof work is done only where it can be done safely.

Condos, apartments, and townhomes often have rules about work in common areas, roof access, and working hours, and some duct runs may be shared or owned by the building. Check with your HOA or property manager before scheduling; their approval or access arrangements may be needed.

Electronic in-duct air cleaners are regulated in California

California's air cleaner regulation (AB 2276), in effect since 2008, requires indoor air cleaners sold in or shipped to California to meet ozone emission and electrical safety standards, with ozone emissions no greater than 0.05 parts per million. The regulation's former exemption for electronic in-duct air cleaning devices has been eliminated, with a phase-in period that ended October 1, 2022, and CARB links to a list of devices that meet its standards.

California Air Duct Pros cleans ducts and dryer vents; it doesn't sell or install air cleaning devices. If anyone offers you an electronic device for your ductwork, check CARB's list first.

Source: California Air Resources Board — California's Air Cleaner Regulation (AB 2276)

What cleaning can and can't do during smoke season

During smoke events, the filter does the work. CARB recommends a MERV 13 or higher filter if your system can take one. Cleaning doesn't filter smoke, and EPA notes that duct cleaning has never been shown to actually prevent health problems — so think of it as removing built-up dust and debris, not as smoke protection.

Sources: California Air Resources Board — Smoke Ready California; U.S. EPA — Should You Have the Air Ducts in Your Home Cleaned?

What cleaning can't do

Duct cleaning removes accumulated dust and debris from the components that are cleaned. It does not repair or seal leaky ducts, fix disconnected or crushed runs, correct a poorly designed system, or replace damaged insulation.

EPA states that duct cleaning has never been shown to actually prevent health problems, and that little evidence exists that cleaning only the ducts improves system efficiency. We don't promise allergy relief, health outcomes, or lower energy bills.

Moisture and mold are a separate problem. EPA notes that controlling moisture is the most effective way to prevent biological growth in ducts, and that insulated ducts which get wet or moldy cannot be effectively cleaned and should be removed and replaced. We don't test for, diagnose, or remediate mold.

Underlying causes such as leaks, pests, or moisture need to be fixed first; otherwise, EPA warns, the problem will likely recur.

• Damaged, leaky, or disconnected ducts need a qualified HVAC contractor
• Furnace, air conditioner, gas, and electrical repairs are outside our scope
• Mold testing and remediation need a qualified mold professional
• Suspected asbestos-containing materials need a qualified specialist before any work

Source: U.S. EPA — Should You Have the Air Ducts in Your Home Cleaned?

Signs you may want an inspection

EPA does not recommend cleaning air ducts routinely — only as needed. It identifies three situations where you should consider having them cleaned:

Mold needs care: EPA notes that something that looks like mold may need laboratory analysis to confirm, and that the underlying moisture problem has to be fixed. A cleaning inspection is not mold testing.

Moving into a home with an unknown maintenance history or finishing a dusty renovation are common reasons people ask for a look; the inspection is what tells you whether cleaning is warranted.

• Substantial visible mold growth inside hard-surface (for example, sheet metal) ducts or on other parts of the heating and cooling system
• Ducts infested with vermin, such as rodents or insects
• Ducts clogged with excessive dust and debris, or particles actually being released into the home from supply registers

Source: U.S. EPA — Should You Have the Air Ducts in Your Home Cleaned?