About Mastertech York
Meet Tom Duff
Founder of MasterTech Environmental of York, PA. Certified mold inspector with 17+ years of experience and over 8,000 inspections completed.
Mastertech Founder, Inspector
17 Years of Honest Mold Answers
I'm Tom Duff, founder of MasterTech Environmental and MasterTech Franchise Systems. For the past 17 years, I've been helping people get honest answers about mold. In that time, I've completed more than 8,000 mold inspections in homes, businesses, and just about every type of building you can imagine.
Along the way, I've also served as an expert witness in mold-related court cases, where my inspections and reports were put under serious scrutiny. When I put my name on a report, you can be confident it's something I'll stand behind.
My background in home inspections gave me the foundation for this work. It taught me how homes are built, how they age, and how water sneaks into places it doesn't belong. That experience - combined with years in the field - means I know where to look, what tools to use, and how to spot problems others might miss.
- Certified Mold Inspector - 17+ years of experience
- 8,000+ mold inspections completed
- Expert witness in mold-related court cases
- MasterTech Franchise trainer nationwide
How I Work
Empathetic, Professional, and Always Improving
Mold can be stressful. It raises health concerns, it makes homeowners worry about their property, and it often feels overwhelming. That's why I take the time to talk clients through my findings in plain English - no confusing jargon, no scare tactics.
When you schedule an inspection with me, I'll give you a detailed report, but I'll also sit down and explain exactly what it means. My goal isn't just to hand you lab results - it's to make sure you understand what's happening in your home and what your options are moving forward.
I also train new MasterTech franchise owners across the country, teaching them how to perform inspections the right way - with accuracy, empathy, and integrity. That means I'm not only sharpening my own skills, but also raising the bar for inspectors nationwide.
Why That Matters
Experience You Can Trust
All of that background - the thousands of inspections, the courtroom testimony, the training of new inspectors - isn't just a résumé. It's what allows me to walk into your home and give you answers you can trust.
Because I've inspected so many properties, I know how to find mold in the places most people overlook. Because I train others, I know the latest tools and real-world techniques. And because I've spent years talking with people in stressful situations, I know how to deliver results with empathy and clarity.
Certified Mold Inspector
17+ years of experience and thousands of inspections completed.
Detailed Lab Reports
Clear, easy-to-read results you can actually understand.
Fast Turnaround
Most reports delivered within 1-2 business days.
Locally Based
Serving York, Dallastown, Red Lion, Hanover, West Manchester & nearby towns.
Get in Touch
Your family's health is worth peace of mind.
If you're worried about a musty smell, moisture problem, or possible mold, getting your home tested is the best way to know what's really going on. A professional mold inspection can help you protect your family and your property before small issues turn into bigger ones.
Ready to get started? Send us a message or call us - we're happy to help.
(717) 676-3574