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Location

York, Pennsylvania

Hours

9:00am to 5:00pm (Mon-Fri)

Call or Text

5 stars

Mold Inspection & Testing Reviews

Reviews

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See what our Clients say

“I called Tom because I kept smelling something musty but couldn’t figure out where it was coming from. He showed up the next day, did a full inspection with his thermal camera, and found a slow leak behind the kitchen wall. He walked me through what needed to be fixed and even helped me come up with a plan to dry it out safely. Super professional, down to earth guy.”
Mark T., Mold Inspection

“I was worried we had mold in our basement after a pipe burst last winter. Mastertech tested the air and explained what the spore counts actually meant — something no one else had ever done. They helped me understand what was normal and what wasn’t, then gave me a simple step-by-step plan to clean and prevent it from coming back.”
Jennifer L., Mold Testing

“If you’re looking for a stand up company, look no further! I am so thankful and trust Master Tech completely. Not only are they respectful of your home (masks), but they do not use scare tactics to rob you of your money. You can trust what they say and they all really do give you peace of mind! Every single person we dealt with gave us great customer service and followed up with emails and recommendations to keep your home safe and healthy! Thank you again, MasterTech!”
Alex M, Mold Testing

“I honestly expected bad news, but Tom walked me through everything and showed me that the mold levels were totally normal. He explained what probably caused the staining and told me there was no need for remediation. That kind of honesty is rare in this industry.”
— Rick B., Mold Testing

“Tom was incredibly patient. I had about a hundred questions and he answered every one of them. He found a moisture issue under our flooring that we would’ve never noticed otherwise. We followed his remediation plan and the musty smell is completely gone. It’s such a relief.”
— Chris D., Mold Inspection

“I really appreciated that they didn’t try to sell me anything. He just inspected, explained, and gave me straight advice. He found a small amount of mold in the attic, told me exactly how to fix the ventilation problem, and even recommended the right type of fan to install. You can tell he cares more about helping than making a buck.”
— Angela S., Mold Inspection

“Short version: I googled/called many companies and MasterTech was without a doubt the right call after my experience. Excellent! It was a great experience working with MasterTech Environmental and their whole team for an inspection and remediation on a property I am helping manage.

Through the entire job (multiple appointments), they were 100% professional (timely written estimates, updates, follow-ups). The inspectors and team were always on-time, courteous, and respectful of your home. It made this process much less stressful. Also, they are very knowledgable in the field and actually helpful, their inspectors were happy to answers all of my questions. They explained what was being done and the process behind it, educating me around this topic so I knew what was going on. 100% recommend using the MasterTech team.”
— Ed S, Mold Inspection & Removal

“Our home had a history of leaks, so we wanted a full inspection before listing it for sale. Mastertech checked every inch, from the crawlspace to the attic, and found one area that needed attention. They gave us a remediation plan that was clear and realistic. Thanks to him, we fixed it before it became a problem for the buyers.”
— Brian K., Mold Inspection

“I thought I needed a full remediation, but after testing, Tom showed me the levels were normal. He explained what likely caused the discoloration in our bathroom and gave us a plan to clean and seal the area correctly. Saved me thousands of dollars and a ton of stress.”
— Lisa P., Mold Testing

“Tom was great — professional but easy to talk to. He explained how the moisture readings worked and what areas we needed to watch moving forward. He even gave advice on dehumidifiers and how to set them up properly. You don’t get that kind of help from most companies.”
— Dan M., Indoor Air Quality Inspection

“We’d been dealing with a musty smell for months and couldn’t pinpoint it. The Mastertech inspector used his moisture meter and found the issue behind a section of drywall in the basement. He helped us outline a remediation plan and explained how to keep humidity levels under control long-term. Couldn’t have asked for better service.”
— Rachel H., Mold Inspection

“Mastertech inspected our rental property after a tenant reported mold. They were super professional and handled everything quickly. They took air samples, explained what the lab results meant, and gave us a plan to resolve the issue safely without tearing the place apart. That kind of knowledge saved us a lot of time and money.”
— Steve G., Mold Testing

“We were nervous after seeing black spots on our basement wall. Tom took samples, explained the results clearly, and showed us how to fix the root moisture problem before cleaning. He even checked back a week later to make sure things were drying properly. That follow-up meant a lot.”
— Nina R., Mold Inspection

“I’ve dealt with contractors who make everything sound like an emergency. Tom’s the opposite. He’s calm, factual, and doesn’t exaggerate. He helped me understand what type of mold we were dealing with and what kind of cleanup was actually needed. Honest guy who knows his stuff.”
— James F., Mold Inspection

“Tom helped me figure out why my daughter’s allergies were worse at home. He did air testing and found elevated counts in one bedroom. He showed me the moisture issue near the window and gave me clear steps for fixing it. Since we followed his plan, her symptoms have improved a lot.”
— Megan B., Indoor Air Quality Inspection

“I called Tom convinced we had a major mold problem. After he inspected and did the air tests, he told me everything looked fine and that I didn’t need any big cleanup. Most people would’ve tried to sell me something, but he didn’t. Just a straight shooter who gives you facts.”
— Michelle P., Mold Inspection

"I found Mastertech through a friend who swore by them, and now I see why. The inspector explained everything from how mold grows to what the air sample results really meant. He gave me a detailed report and a remediation plan that made total sense. No pressure, no upselling.”
— Kyle W., Mold Testing

“Tom showed up exactly when he said he would and took the time to check every part of my crawlspace. The guy knows his trade inside and out.”
— Sarah J., Mold Inspection

“We’d already spent money on a cheap test kit that told us nothing. Mastertech came out, did a real inspection, and found the hidden source of moisture under the sink. Inspector explained what steps to take before hiring anyone for cleanup, which probably keep us from getting scammed.”
— Mike E., Mold Testing

“Tom was respectful and thorough. He checked our entire home after we had a roof leak and found two small spots that needed to be addressed. He gave us a detailed plan on what materials to replace and how to confirm it’s dry afterward. Felt good having someone who actually cared about getting it right.”
— Allison D., Mold Inspection

“I run a small daycare, so indoor air quality is a big deal for me. Mastertech's inspector checked the whole building, did air testing, and went over the results in detail. You can tell they cares about helping people, not just doing a job.”
— Kevin S., Indoor Air Quality Inspection

“We had another company do remediation after a flood, and Tom came in afterward for post-verification testing. He explained how the sampling worked and why certain areas needed to be checked again. His report gave us confidence that everything was finally done right.”
— Jeff C., Post Remediation Verification Inspection

“Tom’s the kind of guy who actually takes time to teach you something. I had no idea how mold testing worked before he came by. Now I know how to read the results and what to look for in the future. He’s professional, knowledgeable, and just a genuinely good person to deal with.”
— Brian N., Mold Testing

“Professional and Reasonably Priced, lol! I had windows leaking and causing damage. I wanted to make sure my family was safe from mold so had some testing done. Our inspector (Tom, I think) was very informative and professional. I had my results in 2 days! Highly Recommend to anyone!”
Scott L, Mold Testing

“I hired Tom to do a post-remediation inspection after we had another company handle cleanup. He found one area they missed and explained exactly how to fix it — no drama.”
— Laura V., Post Remediation Verification Inspection

Tom came out after another company tried to either scam me or scare me into paying for a full mold remediation. He tested everything, explained the results, and showed me that the mold levels were normal. He prob saved me thousands of dollars.”
— George L., Mold Testing

“Wonderful company to work with. Highly recommend Master Tech. Everyone was friendly and professional. I give them 5 stars out of 5.”
-Frances R, Mold Testing

“For quite some time my wife Maureen and I had acute sinusitis. She said, “the house is making us sick”. Finally after months of doctor visits and medication Maureen decided we should check our basement. Why we did this was because we had a water problem 2 summers prior and XYZ Company did the water cleanup. Well to my dismay we detected some mold in the corners. We immediately contacted Master Tech Environmental due their internet quality reviews. Mr. Tom Duff visited the same evening. He went right to the basement and in no time discovered black mold which was under the linoleum in our partially finished side. The test equipment detected numbers that were ridiculous and sickening. Tom discussed in detail what his team of professional would do and how we would be well protected after the mold remediation. We schedule the cleanup.

A team of 5 members, headed by Tony arrived shortly after receiving the proposal and contract. There was no holding the crew back. Tony and Mark walked me through their program which took four days.

Not once did they slow down working as a team they completely emptied the base of years of clutter on one side and a complete array of desks, computer equipment, bookcases filled with hardback, paperback and audio books all which was lost to the mold. Not only did we lose the office in its entirety but seasonal clothes and coats, decorations etc. What a disaster.

For the better part of two days they removed everything from the basement. Only certain items were able to be kept. Oh boy!

The came the mold removal process. The team completely set up a plastic chamber from the entry door to the cellar steps. Over the next two days they went about the remediation. What a task at hand. The team did an awesome job. Afterwards, a walk through and discussion of all that had been cleaned was led by Tony. What a job that they did.

That was not the last of Master Tech. Just this month we had another homeowner issue which resulted in a flooded basement. After calling the insurance company, the Horizon and Delmonte Waste Removal, I called Tom at Master Tech.

Tom promised me he would have a team to my house that day. Thankfully Tony and Mark arrived around 4:00 and went right to work. Four hours later and looking a little tired, they had the fans and dehumidifier running full speed to dry out the waterless basement. If not for them I do believe my wife would have traded me and the house in for a glass of wine.

Thank you Tom, Tony, Mark and the mold team! Oh and thanks go to Master Tech for being a class operation. Tom you saved us twice. You are aces."
Leonard Y, Mold testing and Remediation

“Such a pleasure to work with, Tom was very direct and informative of what we needed to do. Super friendly, and the hours that they were willing to come out are super convenient that we didn’t have to take an entire day off. I would definitely recommend to others!!”
Annie B, Mold Assessment

“Extremely pleased. Great customer service. They were very knowledgeable and informative on the situation. Easy to work with. Most of all, I felt they were honest and trustworthy which you don’t see from many companies. Thank you.”
Kendall N, Mold Testing South Jersey

“Great company, great integrity! Always a pleasure to work with and I think their prices are very fair. There are many companies out there trying to rip off people with crazy prices, not MasterTech. They came in, did the job very quickly and helped us with our basement issue. Good guys. I always recommend them.”
Joe A, Mold Testing

“Master Tech Environmental did a great job from the estimate/testing till the completed work. Very respectful and professional. I was made aware of every process.”
Michal K, Mold Testing

“Thank you for all the wonderful service provided to me by MasterTech. The entire team, from office coordinators to owner, went well above and beyond. Your service was exceptional, courteous and complete.”
Jodie S, Mold Inspection

“Tom was very professional, and showed great customer service skills during his visit to our home. He shared great informational tips about keeping my home humidity levels low. I recommend Mastertech Environmental to all.”
Lorenc C, Mold Inspection

“I was ready to spend a ton on a mold cleanup until Tom tested and told me it wasn’t necessary. He explained how mold spores are everywhere and that my results were totally normal. He gave me a few simple tips for prevention instead. Straightforward, honest service.”
— Darren S., Mold Testing

“Tom was my mold inspector and he went above and beyond to provide a great experience. There’s no doubt in my mind I would go to Master Tech for any situation involving mold.”
Mike C, Mold Inspection

“MasterTech and their crew were fast, professional, answered all my questions, came in with superior service, in depth reporting and were able to give a professional write up to use in our mold situation at the work place. I would highly recommend this company to anyone looking for mold detection services.”
Marisa B, Commercial Mold Inspection

“A couple weeks before we were expecting our third child, I found mold while cleaning out our master bedroom closet. This discovery was quite alarming as we also have 2 younger children in our home. Because the mold was black in color and we did not know the toxicity level, we thought it best that me (pregnant) and our 2 children reside elsewhere until we had the proper testing performed. After some research online, my husband came across MasterTech Environmental, which has stellar reviews on various websites.

My husband spoke with the owner, Tom Duff, directly. Upon hearing of our dire circumstances, Tom committed to performing the assessment the very next day. My husband and Tom did a whole house walk-through to fully assess any damage and identity potential causes. After inspection, additional mold was identified in our garage & attic. Remediation options and the amount of time needed to complete the job were discussed. It was further explained that when the job was complete, air samples would be collected to assess that all mold was removed and the air within our home was safe to breathe.

Tom & his team did an OUTSTANDING job. Their PROFESSIONAL manner and EXPERTISE was beyond our expectations. They arrived ON TIME every day, going above and beyond to ensure that our family was taken care of and the job was done CORRECTLY. Tom followed-up, as promised, and the results of the air quality test were delivered next day (no harmful mold spores present). My husband & I would highly recommend this company time & again based on our positive experience. Thank you so much for a job well done!!”
Lorie P, Mold Inspection & Remediation

“I reached out to Mastertech after seeing some discoloration in the basement. Tom inspected, took samples, and said right away that it didn’t require a full remediation — just some cleaning and fixing the moisture issue. He could’ve easily exaggerated it, but he didn’t. Solid, trustworthy guy.”
— Erin K., Mold Inspection

“From the start, setting up an appointment when I called in and spoke with Diane was easy. Shorty after, I had a consultation and review of my basement with Tom. I suspected I had mold on my floor joists but after a thorough look at my old unfinished basement and crawl space, we found that I didn’t have anything immediate to worry about. No high pressure sales tactics here – just a good company with good people looking out for your safety. Highly recommended.”
Jeff L, Basement Mold Inspection

“Friendly and thorough! Very helpful! Tom is the best!”
Brandi H, Mold Testing

“Thanks MasterTech! We very much appreciated Tom’s candor and honesty regarding our situation. He explained all of the options thoroughly and went through a couple of ‘what if’ scenarios. Very helpful. It was refreshing to deal with such a genuine professional!”
Ray S, Mold Inspection

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Mastertech Environmental of York, PA. I'm your local expert in professional mold testing and inspection. With 17+ years of experience and trusted by thousands of homeowners, I can help you protect what matters most — your health and your home.

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