Skip to content 
FAQS
Frequently Asked Questions
At Tornado HVAC, we believe homeowners should have clear, honest information before scheduling a service. Have questions about air duct cleaning, dryer vent cleaning, or HVAC services? You’re not alone.
Here are answers to the most common questions we receive about air duct cleaning, HVAC maintenance, and indoor air quality:
How often should I get my air ducts cleaned in Sherman Oaks?
Most homes in Sherman Oaks benefit from air duct cleaning every 3 to 5 years. If you have pets, allergy sufferers, or your home recently went through a renovation, we recommend cleaning every 2 to 3 years. The San Fernando Valley’s heat and Santa Ana wind seasons push more dust and debris into duct systems than in coastal areas, so shorter intervals make sense here.
How do I know if my air ducts need cleaning?
The most common signs are dust reappearing quickly on furniture after you clean, a musty or stale smell when the AC or heat turns on, allergy symptoms that are worse at home than outside, and rooms that don’t cool or heat as evenly as they used to. If it’s been more than five years since your last cleaning — or you have no idea when it was last done — a camera inspection is worth scheduling.
What does air duct cleaning include?
A professional air duct cleaning covers your supply ducts, return ducts, grilles, registers, and air handler unit. At Tornado HVAC, every job starts with a camera inspection so you can see the condition of your system before we touch anything. We use HEPA-filtered negative-air equipment and provide before-and-after photos when the job is complete.
How long does air duct cleaning take?
Most residential air duct cleanings in Sherman Oaks take between 2 and 4 hours, depending on the size of the home and the number of vents. Larger homes or systems that haven’t been cleaned in many years may take longer. We give you a realistic time estimate before we start.
Is air duct cleaning worth it?
Yes — when it’s done properly. Clean ducts improve indoor air quality, reduce dust circulation, and help your HVAC system run more efficiently. Homeowners with pets, allergies, or older ductwork typically see the most noticeable difference. The key is using a company that does a real cleaning with proper equipment, not a rushed job with a shop vac.
Can dirty air ducts make my allergies worse?
They can. Dust, pet dander, mold spores, and pollen accumulate inside ducts over time and recirculate through your home every time the HVAC system runs. If your allergy symptoms are worse at home than at work or outside, contaminated ductwork is a common contributing factor. Cleaning and sanitizing the duct system removes the source rather than just treating the symptoms.
How much does air duct cleaning cost in Sherman Oaks?
Residential air duct cleaning in Sherman Oaks typically runs between $150 and $350 for most homes, with larger or more complex systems up to $500. At Tornado HVAC, we provide a written quote after a camera inspection before any work begins — the price you see is the price you pay. First-time customers receive $20 to $50 off their first service.
Do you clean air ducts the same day?
Yes. Tornado HVAC offers same-day air duct cleaning throughout Sherman Oaks and the San Fernando Valley. We operate 24 hours a day, 7 days a week, and most requests made before mid-afternoon can be scheduled the same day. Call (818) 740-5813 and we’ll confirm your availability right away.
What is the difference between air duct cleaning and HVAC cleaning?
Air duct cleaning focuses on the passages that carry air through your home — the supply ducts, return ducts, registers, and grilles. HVAC cleaning goes further and includes the system components that condition the air, such as the evaporator coil, condenser coil, and blower motor. We recommend combining both services, since clean ducts with dirty coils still deliver compromised air quality and reduced efficiency.
Can mold grow inside air ducts?
Yes. Mold grows in ductwork when moisture is introduced — typically from a roof leak, plumbing issue, or condensation near the air handler. It’s often invisible from the vent opening but gets dispersed through your home every time the system runs. A camera inspection will show exactly what’s in your ducts, including any mold growth, so it can be properly cleaned and treated.
Do I need to leave my house during air duct cleaning?
No, you don’t need to leave. The cleaning process is contained — we use negative-air equipment that captures debris rather than blowing it into your living space. Most customers stay home during the job. If sanitizing is being applied, we’ll let you know what product we’re using and whether any brief ventilation is recommended afterward.
Why does my house get dusty so fast in Sherman Oaks?
Rapid dust buildup is one of the most common complaints we hear from Valley homeowners. The San Fernando Valley’s geography traps airborne particulates, and homes here run their HVAC systems harder and longer than in coastal areas — which means more air cycling through the duct system every day. If your ducts are carrying accumulated debris, that material keeps recirculating onto every surface in your home. Cleaning the duct system is usually the most effective fix for persistent dust problems.
