About The Mad Hatter Service Company

Our Story

Founded in 1978, The Mad Hatter Service Company began as a small family chimney sweep business serving the O'Fallon and St. Charles communities. Over the past 46 years, we've grown into one of the most trusted chimney and air duct cleaning companies in the St. Louis metropolitan area — but we've never lost our family-owned values.

Our motto, "Large Enough to Serve, Small Enough to Care," reflects our commitment to combining professional-grade equipment and expertise with the personal attention that only a family-owned business can provide. When you call Mad Hatter, you're not just a ticket number — you're a neighbor.

What Sets Us Apart

Chimney Safety Inspections Built on Local Code

Every Mad Hatter chimney safety inspection is based on St. Louis City & County and St. Charles City & County currently adopted municipal code. We live and work here, so we inspect to the codes that actually apply to your home — not a generic national checklist. You get a clear, documented report of what meets code, what doesn't, and what it takes to make it right.

Truck-Mounted Vac for Air Ducts & Commercial Vents

For air duct cleaning and commercial dryer and exhaust vent cleaning, we bring our truck-mounted vacuum system. It pulls dust and debris out of the system and straight to the truck outside, so it isn't recirculated through your home or building.

BBB A+ Accreditation

We're proud to maintain an A+ rating with the Better Business Bureau — a distinction we've held through decades of honest business practices, transparent pricing, and quality workmanship. Our 4.9-star Google rating from over 1,662 customer reviews speaks to the trust our community places in us.

Our Commitment to You

• Transparent pricing — we publish our rates and provide free estimates before any work begins
• Certified technicians — background-checked, fully insured, and continuously trained
• No-mess guarantee — we protect your floors and furnishings and leave your home as clean as we found it
• Satisfaction guaranteed — we stand behind every job we do
• Community focus — we're your neighbors, and we treat your home like our own

Our Service Area

Based in O'Fallon, Missouri, we serve homeowners and businesses across St. Charles County, St. Louis City, and St. Louis County. Our service area includes O'Fallon, St. Charles, St. Peters, Lake St. Louis, Wentzville, Florissant, St. Louis, Clayton, Kirkwood, Chesterfield, and surrounding communities.