St. Louis Chimney Sweep & Air Duct Cleaning Experts
Family-owned since 1978. Hearth safety inspections based on local adopted municipal code, truck-mounted air duct cleaning, and masonry repair — all backed by a no-mess guarantee. Serving St. Charles, St. Louis City, and St. Louis County.
Chimney & Air Duct Services Built on 46 Years of Trust
From code-based chimney safety inspections to truck-mounted air duct cleaning, we deliver professional-grade service with a no-mess guarantee across the St. Louis metro area.
Chimney Sweep & Inspection
Professional chimney sweeping and safety inspections based on St. Louis City & County and St. Charles City & County currently adopted municipal code, with full documentation.
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Air Duct Cleaning
Negative pressure air duct cleaning that removes dust, allergens, and debris from your entire HVAC system. Improves air quality and system efficiency.
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Dryer Vent Cleaning
Professional dryer vent cleaning that removes lint buildup and reduces fire risk. Improves dryer efficiency and extends appliance lifespan.
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Chimney Repair & Masonry
Chimney crown repair, tuckpointing, brick restoration, waterproofing, and gas appliance service. Full masonry expertise to keep your chimney safe and structurally sound.
Learn moreDifferent by Design, Trusted by Thousands
We combine old-fashioned family values with cutting-edge diagnostic technology to deliver results you can see and breathe.
Truck-Mounted Vac System
For air ducts and commercial dryer and exhaust vents, our truck-mounted vacuum pulls debris straight out to the truck — nothing recirculated through your home or building.
Inspected to Local Code
Our chimney safety inspections are based on St. Louis City & County and St. Charles City & County currently adopted municipal code — the rules that actually apply to your home — with clear, documented findings.
Family-Owned Since 1978
Three generations of the Mad Hatter family have served St. Louis. We're large enough to serve you professionally, small enough to care personally. Every job is our family name.
Transparent Pricing
We publish our pricing upfront — no surprise charges, no hidden fees. You'll know exactly what you're paying before we start the work. Honest estimates every time.
Fully Insured & Certified
BBB A+ accredited, fully insured technicians trained on local adopted municipal code. Background-checked, uniformed, and professional on every job — your home is in trusted hands.
Same-Day Service Available
Urgent chimney or air duct issue? We offer same-day and emergency appointments across the St. Louis metro. Call 636-946-1622 and we'll be there.
1,662 Reviews Can't Be Wrong
Our customers trust us with their homes and their families' safety. Here's what they have to say.
"The Mad Hatter team came out and did a fantastic job cleaning our chimney and air ducts. They were on time, professional, and left no mess at all. Their vac truck made quick work of our ducts — you can see the difference immediately."
"We've used Mad Hatter for years. Their chimney inspection was incredibly thorough — they showed us the video and explained everything. Found a crack we didn't know about and fixed it. Highly recommend."
"After our dryer vent cleaning, our dryer dries clothes in half the time. The technician was knowledgeable and friendly. Fair pricing and excellent service. We'll be using them again."
Proudly Serving the St. Louis Metro Area
Based in O'Fallon, MO, we serve homeowners and businesses across St. Charles County, St. Louis City, and St. Louis County.
Your Chimney & Air Duct Questions, Answered
We recommend an annual chimney safety inspection, with sweeping as needed. Our inspections are based on St. Louis City and County and St. Charles City and County currently adopted municipal code. An annual inspection ensures your chimney is structurally sound and free of creosote buildup, which is the leading cause of chimney fires. If you use your fireplace regularly, scheduling a cleaning before each heating season is ideal.
The EPA and NADCA recommend having your air ducts cleaned every 3 to 5 years for optimal indoor air quality. Homes with pets, allergies, or recent renovations may benefit from more frequent cleaning. Signs your ducts need attention include visible dust around vents, musty odors, or increased allergy symptoms.
Our truck-mounted vacuum is used for air duct cleaning and commercial dryer and exhaust vent cleaning. It pulls dust and debris out of the system and straight to the truck outside, so nothing is recirculated through your home or building.
Yes. All Mad Hatter technicians are certified, background-checked, and fully insured. We are BBB A+ accredited, and our chimney safety inspections are based on St. Louis City and County and St. Charles City and County currently adopted municipal code. Our team trains continuously to stay current with local code and NADCA air duct standards.
We serve St. Charles County, St. Louis City, and St. Louis County, Missouri. This includes O'Fallon, St. Peters, St. Charles, Lake St. Louis, Wentzville, Florissant, St. Louis, Clayton, Kirkwood, and surrounding communities. Call us at 636-946-1622 to confirm service availability in your area.
You can book online through our secure scheduling system or call us directly at 636-946-1622. Our online booking lets you choose your preferred date and time, and you'll receive a confirmation email with all the details. Same-day appointments may be available for urgent issues.
Ready to Breathe Easier?
Schedule your chimney inspection or air duct cleaning today. Same-day appointments available across the St. Louis metro area.