Meet the Team
Experienced Professionals. Certified Standards. Trusted Results.
Our team is built to inspect Colorado’s premier hearth systems in high-demand mountain zones — where luxury homes, complex installations, and certified inspections define the work. Because our focus is on high-value systems in premium markets, every team member is selected not only for skill and certification, but also for the ability to deliver high-efficiency, high‐impact service. We don’t chase volume — we deliver excellence. Our team members are empowered to focus full attention on each client rather than rushing through job after job.
Daniel Freeman - Founder, Owner, CEO
Daniel Freeman is the founder of The Chimney Doctor, Ltd. and Freeman Fire Inspectors, leading both organizations with a focus on certified safety, technical precision, and industry education.
He entered the chimney and fire safety field in 2013 and established The Chimney Doctor in 2016, building it on three principles that still define the company today: problem-solving, continuous education, and protecting life and property through certified practice.
Daniel remains deeply engaged in advancing industry standards. He serves as an instructor for leading national education programs and sits on multiple technical and code committees — including two Underwriters Laboratories Standards Technical Committees (STC103 and STC127) and the NFPA 211 Technical Committee responsible for national chimney and venting standards.
As the founder of Freeman Fire Inspectors, Daniel also provides expert witness and forensic inspection services across the United States, bridging fire investigation, construction, and code compliance disciplines to support litigation, insurance, and regulatory matters.
He holds a B.S. in Marketing Management and an MBA in Strategy & Leadership from Western Governors University, and has completed executive leadership and consulting programs in both the U.S. and Europe.
Outside of his professional work, Daniel prioritizes time with his wife and five children, enjoys hands-on projects and travel, and serves actively in his faith community as an Interfaith Outreach Specialist for the Colorado Southwest Slope Area Communications Council.
- IAAI-FIT Fire Investigation Technician
- F.I.R.E. Certified Fireplace & Chimney Inspector FCI-338
- NFI Certified Instructor / Master Hearth Professional (Wood, Pellet, Gas) #176537
- NCSG Honorary Master Chimney Professional
- ICC Certified Residential Mechanical Inspector #9688396
- ICC Class B Contractor
- ICC Master Mechanical ContractorCSIA Certified Chimney Specialist #41, Sweep #9430
- C-DET Certified Dryer Exhaust Technician #1137
- HeatShield Factory Trained Installer
- Underwriters Laboratory Standards Technical Committee Member (STC103 & STC127)
- NFPA211 Technical Committee Member
Esteban Zavala - Apprentice Inspection Specialist
Esteban Zavala brings a strong work ethic, hands-on technical experience, and a people-first mindset to The Chimney Doctor team. Originally from Cleveland, Tennessee, Esteban values building genuine relationships with the clients and coworkers, drawing on both his Southern roots and his Latin American heritage to connect with people from all backgrounds.
With professional experience spanning construction, remodeling, vehicle inspection, and customer-facing service coordination, Esteban is detail-oriented and safety-minded. His background includes hands-on work in framing, roofing, electrical, plumbing, and equipment maintenance, as well as formal training in OSHA safety standards and mechanical systems. He takes pride in maintaining clean, organized work environments and communicating clearly with customers about conditions, options, and expectations.
Esteban enjoys working outdoors and continually seeks new experiences that expand his knowledge and understanding of the world. He is known for his reliability, loyalty, and respect for others—values he attributes to his Christian upbringing—and approaches his work with integrity, accountability, and a commitment to doing things the right way.
Bill Fister - General/Operations Manager
- NFI Certified Hearth Design Specialist
Bill brings over 20 years of experience running A Perfect Stone, a successful landscaping and masonry company that managed up to 18 employees at its peak.
Since joining our team in 2018, Bill has earned the respect of both staff and customers through his hard work, straightforward approach, and his ability to explain complex topics with clarity and patience. His background in the military instilled in him a strong sense of discipline and respect—values that guide how he leads and serves.
While Bill does not work in the field as a technician, he is actively pursuing industry certifications to deepen his technical expertise. His dedication to education and communication has made him an invaluable bridge between our technical team and our clients—helping homeowners understand their chimney systems with confidence and clarity.
His previous experience as an Investment Broker has also shaped his strategic approach to business management, and he continues to follow financial markets closely with genuine interest.
At the office, Bill is rarely seen without his loyal dog, Shasta, whose energy and companionship are a daily reminder that good leadership includes heart as well as focus. If you have the opportunity to speak with Bill, you’ll quickly understand why he’s become such an essential part of both our company and our customer experience.
Tammy Mancuso - Administrative Assistant
Since joining The Chimney Doctor in 2017, Tammy has been an invaluable part of our team—known for her genuine care, steady professionalism, and deep commitment to both customers and staff. For Tammy, family isn’t just a word—it’s a way of life.
Originally from Rochester, New York, she moved to Colorado’s Western Slope in 2015 before relocating to Manti, Utah, where she continues to work remotely. Tammy assists with payroll, customer follow-ups, and administrative coordination, ensuring operations run smoothly behind the scenes.
Beyond her work with us, Tammy is also a birth and postpartum doula, helping families navigate the joys and challenges of new life transitions. Her long history of community service includes leading a large women’s organization, directing youth enrichment camps, and teaching youth development programs—all centered on connection, growth, and compassion.
Tammy is “Dear” to one, “Mom” to six, and “Grams” to eleven—a title she holds most dear. Though we miss seeing her in the office daily, we’re deeply grateful for her continued presence, dedication, and heart.
2944 I-70 Business Loop #210
Grand Junction, CO 81504
info@chimney.doctor
Certifications & Associations
