Three generations of the Mack family and a CSIA certified team with decades of experience in St. Louis and St. Charles homes.
The Mad Hatter Service Company was founded in 1978, born from the self-reliance movement and inspired by August West's chimney sweeping articles in Mother Earth News. What began as a practical response to the energy crisis has grown over 48 years into one of the most technically equipped chimney and ventilation companies in the St. Louis region, still owned and run by the Mack family.
Second-Generation Owner · Certified Chimney Sweep Since 2000
Joe's work with The Mad Hatter began in 1991, the start of a 35-year career devoted to hearth and ventilation systems. With an Associate's Degree in Heating, Cooling, and Refrigeration, he bridges old-world masonry and modern HVAC/R. His 26 years of professional certification are the foundation of every field procedure we use today. Read Joe's story.
Operations
Joe's high school sweetheart and partner for more than 30 years, Annie has been the backbone of the company's operations since the early days. Her leadership keeps the business steady and the Mack family's long-term vision on track.
Director of Technical Operations
Third generation. Marina leads compliance and logistics, keeping our schedules, documentation, and field operations running smoothly.
Our lead technicians maintain active CSIA certification and are trained in the Mad Hatter inspection protocol, with every hearth-related inspection based on St. Louis City & County and St. Charles City & County currently adopted municipal code.
Senior Inspector · Field Mentor · 22+ Years
A cornerstone of our technical team for more than two decades and a CSIA Certified Chimney Sweep. Jason brings a depth of field experience that is hard to match.
CSIA Certified Chimney Sweep · Lead Air Duct Cleaning Technician
Third generation. Junior is a CSIA certified chimney sweep and leads our truck-mounted air duct cleaning and commercial exhaust duct and dryer vent work.
Lead Specialist · 5+ Years
CSIA Certified. Kenny focuses on putting our diagnostic tools to work and on precision chimney restoration.
Specialist in Training · 5+ Years
After five years mastering our systems in the retail division, Rock has moved to the field and is completing his CSIA certification requirements.
Technical Office Assistant · 5+ Years
Sara provides the administrative support behind our inspection reports and service schedules.
Fourth Generation
Representing the fourth generation of the Mack family, Jayce is already learning the commitment to safety and precision that began in 1978.
When you hire The Mad Hatter, you get a team that has worked together for years and knows how St. Louis and St. Charles homes are built.
Jason joined The Mad Hatter in the early 2000s and has spent more than two decades mastering how hearth systems have changed across the St. Louis and St. Charles regions. As a CSIA Certified Chimney Sweep, his experience spans the traditional hand techniques of years past to the camera and diagnostic tools we use today.
In 2026, Jason was named Senior Field Mentor for our incoming class of five technical apprentices. He is responsible for turning 22 years of field experience into the standard operating procedures the next generation will follow.
Jason doesn't just look at a chimney; he reads its history. When our new recruits need to understand why a system is failing, they look to Spidey for the mechanical proof.
Joe Mack, Owner
Learn more about The Mad Hatter, see our chimney inspections, or view our pricing.
Our lead technicians maintain active CSIA certification, and our specialists in training work toward CSIA certification under senior supervision.
A trained member of the Mad Hatter team. Our lead technicians are CSIA certified, and our technicians train at our own Service Training Center.
Book online anytime, or call 636-946-1622 Monday through Friday 8 AM to 4 PM and Saturday 9 AM to 1 PM.
