Castillo Air Duct Cleaning LLC removes dangerous buildup to prevent carbon monoxide leaks, fires, and costly repairs—with licensed, insured service backed by a 100% satisfaction guarantee.
Comprehensive air duct cleaning for Chelsea homes and businesses.
Deep-cleaning of all ductwork, vents, coils, and blower components to remove allergens, mold spores, and combustible debris.
Comprehensive inspection of ductwork and vents to identify leaks, blockages, or corrosion that could allow CO to enter your living space.
Removal of combustible debris—lint, pet hair, insulation fragments—that accumulates in ducts and poses a fire risk near heating elements.
Targeted treatment of ducts and vents to eliminate mold colonies and prevent regrowth in Chelsea’s humid climate.
Complete extraction of nests, droppings, and carcasses from ducts, followed by sanitization to neutralize pathogens.
Documented proof that your ducts meet Massachusetts indoor air quality standards, with recommendations for ongoing maintenance.
We hold ourselves to the highest standards so you can hire with total confidence.
Chelsea homes built before 2000 often have ductwork that doesn’t meet current fire safety standards. Our cleaning ensures your system aligns with Massachusetts amendments to NFPA 90A, reducing liability for homeowners and landlords alike. Non-compliance can void insurance claims after a fire—don’t gamble with outdated systems.
CO poisoning cases spike in Chelsea during December and January when furnaces work overtime. Our duct assessments catch leaks before they become emergencies, a critical step for homes with attached garages or shared duct systems. Early detection can save lives—and your heating bills from wasted energy.
Many Chelsea homeowners qualify for 5–15% discounts on homeowners insurance after documented duct cleaning. Providers like State Farm and Allstate recognize clean ducts as a fire and health risk reducer. Ask us for a letter to submit with your next renewal.
With asthma rates in Suffolk County 20% higher than the national average, clean ducts directly impact your family’s health. Parents in neighborhoods like Bellingham Square and Admirals Hill report fewer sick days after our service. Clean air isn’t a luxury—it’s a necessity.

At Castillo Air Duct Cleaning LLC, we don’t just clean ducts—we protect Chelsea homes from hidden fire hazards and silent carbon-monoxide threats. Our team combines IICRC-certified training with Massachusetts building-code expertise to deliver air-duct systems that meet or exceed NFPA 90A standards, ensuring your family breathes cleaner air while reducing the risk of duct-related fires. We inspect every vent, seal every gap, and remove every speck of dust, mold, or debris that could ignite or circulate toxins. Chelsea’s older housing stock and humid coastal climate make this work especially critical—don’t let your home become another avoidable statistic.
"After my son’s asthma flared up last winter, I called Castillo. They found mold in our ducts that the HVAC company missed. My son’s symptoms improved within days, and the air smells fresher. Worth every penny."
"I was skeptical until Castillo explained how my 1920s ductwork was a fire hazard. They cleaned it thoroughly and gave me a fire code compliance certificate. My insurance agent was impressed—saved me $200 on premiums."
"Rodent droppings in our ducts were making my elderly mother sick. Castillo removed everything, sanitized the system, and sealed entry points. She’s breathing easier, and we finally have peace of mind."
"I thought duct cleaning was a scam until I saw the black gunk they pulled out of my vents. My energy bills dropped 15% the next month. Highly recommend for any Chelsea homeowner."
"My landlord refused to address the mold in our building’s ducts. Castillo came out the same day I called and provided documentation for my complaint. The city inspector cited the landlord for code violations—saved us all."
"Winter came early this year, and my furnace was struggling. Castillo cleaned the ducts and found a CO leak near the blower. They fixed it on the spot. Could’ve been a tragedy—glad I called them first."
Expert local advice for Chelsea homeowners.
Learn how to spot and stop carbon monoxide risks in Chelsea homes before winter’s chill sets in. Protect your family with a free risk assessment.
Read more →Learn what a full HVAC system sanitization in Chelsea includes, why it’s critical for fire safety, and how it protects your home year-round.
Read more →Learn why Chelsea homeowners trust air duct cleaning to cut fire risks, improve air quality, and cut heating bills. See local costs, benefits, and how to pick the right pro.
Read more →Call (617) 993-9334 or use our online scheduler for a same-day or next-day appointment. We’ll confirm your duct type, HVAC setup, and any specific concerns like pets or recent renovations.
Our technicians arrive with EPA-certified meters to measure particulate levels, mold spores, and CO in your ducts. This baseline data ensures we target the right contaminants and gives you proof of improvement after cleaning.
Using truck-mounted vacuums, rotary brushes, and antimicrobial treatments, we remove 99% of debris from your entire duct system. For Chelsea homes, we pay extra attention to basement ducts and crawl spaces where moisture and pests thrive.
We provide a detailed report with before/after air quality data, photos of problem areas, and a maintenance plan. Follow-up inspections are scheduled automatically to keep your ducts compliant with Massachusetts standards.
Proudly serving Chelsea and these nearby communities.
Yes—older ductwork in Chelsea’s triple-deckers often contains flammable dust, lint, and even creosote buildup from decades of heating use. A single spark can ignite this cocktail, turning a routine winter night into a full-blown fire. We remove every hazard and seal gaps to prevent ignition, giving you peace of mind that your 1920s-era home meets today’s safety codes.
Absolutely—Chelsea winters strain heating systems, and dirty ducts force furnaces to work harder, driving up energy bills and risking breakdowns. A pre-season cleaning improves airflow by up to 40%, lowers heating costs, and reduces the chance of a mid-January repair call. Think of it as a tune-up for your home’s lungs.
Yes—even without a fireplace, dust, pet dander, and outdoor pollen accumulate in your ducts year-round, especially in Chelsea’s high-traffic neighborhoods near Route 1A. These contaminants circulate through your AC, triggering allergies and asthma. A deep clean removes the hidden pollutants that settle in your vents, keeping indoor air quality high all summer.
Indirectly, yes—clogged ducts restrict airflow, forcing furnaces and boilers to burn fuel inefficiently. This incomplete combustion can produce carbon monoxide, which then gets trapped in your ducts and recirculated. We clear blockages and inspect your entire HVAC system to ensure safe, efficient combustion.
Immediately—renovations in Chelsea’s older homes kick up massive amounts of dust, drywall particles, and insulation fibers that settle deep in your ducts. We recommend a post-renovation cleaning within 30 days to prevent these contaminants from circulating through your home for years.
No—DIY methods often involve aggressive brushing or improper vacuuming that can damage plaster, dislodge asbestos (in pre-1980s homes), or push debris deeper into the system. Our technicians use soft-bristle tools and HEPA vacuums to clean safely without risking your home’s historic integrity.
Clogged dryer vents—lint buildup in dryer ducts is the #1 cause of preventable house fires in Chelsea, according to local fire departments. We clear these vents completely and install vent covers to stop lint from escaping into your walls, a critical step for multi-unit buildings.
Yes—our cleanings meet Massachusetts rental housing code requirements, including the removal of visible mold, dust, and debris from ducts and vents. We provide a signed certificate that landlords and tenants can submit to inspectors, proving your property is code-compliant.
Fast response, upfront pricing, and workmanship guaranteed. Get your free estimate today.