Understanding the substantial negative impact that deficient building performance, poor indoor air quality, excessive interior and substructure moisture and HVAC system inadequacies have on the Lowcountry's residents and business owners; and realizing a lack of engineering professionals concentrating in this specialized area, Louis Schweers founded GLS Engineering & Testing in 2003. A Licensed Professional Engineer with over 20 years of residential and commercial experience, Louis has concentrated almost exclusively on HVAC, moisture and indoor air quality issues. His unique combination of education and "real-world" experience qualifies him as one of the foremost forensic engineers in South Carolina. Recognized as a leading authority in the field, Louis is often asked to provide expert testimony in legal cases involving mold, moisture, building performance and indoor air quality issues.
Served areas
- Mount Pleasant, Charleston, Summerville, Kiawah Island, Seabrook Island, Isle of Palms, Sullivans Island, James Island, Daniel Island
Services
Are you concerned that there may be mold in your Charleston SC home? The best way to find out for sure is to test for mold. GLS Engineering & Testing tests for mold via air samples and tape lift samples. Thorough mold testing will include the interior of the home, crawl space and attic. Concerns about toxic mold, black mold or other types of mold that may affect your health and the structure of you home can be eliminated by performing these non-invasive tests; and if a mold problem is discovered, you will have the proper tools to start a thorough mold investigation and get to the root of the problem. A mold-free home is a happy home so call GLS Engineering & Testing today or visit us on the web. 
In Charleston and throughout the Lowcountry, locals are familiar with the adage: "It's not the heat; it's the humidity! " High humidity levels outdoor are uncomfortable, but inside your home or commercial building, they can be much worse than just a discomfort. Humidity is the primary condition that leads to mold growth and overall poor indoor air quality. Unfortunately, most residential and light commercial HVAC systems are designed only to maintain temperatures and not to control humidity. In many parts of the country, those types of systems are perfectly adequate, but in the Charleston area, humidity is a huge concern.
Give GLS Engineering & Testing a call today to see how we can help resolve your humidity control problem.
Indoor air quality has become a major concern for homeowners across the US. Pollutants, contaminants, dust, or pet dander that are in your home's indoor air can be a major health concern for any members of your household. And if there are any elderly people or children in your home, the risks become even higher. Many homes have moisture-related problems that are unique to our region, or they have deficient air conditioning system. Most homes in the area simply weren't designed with regard to indoor air quality and don't provide the fresh air ventilation, filtration, and humidity control necessary for sensitive occupants.
The professionals at GLS Engineering & Testing can help you ensure that your Charleston home has the cleanest, safest, and healthiest indoor air quality possible.
Indoor air with excessive moisture is a major problem in many Charleston homes, and it's also a condition that leads to mold, mildew, and fungal growth. Excessive moisture in your Charleston home can also promote termite activity, which will cause hardwood floors to cup and bucks, and it can significantly impact your home's indoor air quality. If you've discovered excess moisture in your home, or if you believe moisture is causing one of the aforementioned problems, GLS Engineering & Testing can provide you with professional moisture control services. After conducting an interview with you to discuss your concerns and learn about the history of your problem, we'll perform an investigation to determine the source (or sources) of you indoor air's excessive moisture. Then, we'll help you develop a strategy to effectively manage the problem.
Reviews (7)
Lauren Miller
May 25, 2022
Louis inspected a home we were purchasing in August. I was very clear how my family was previously impacted by mold illness (especially my kids) and how sick we were. He charged me ~$1000 did an "inspection", ran air samples and sent over a report -suggested installing a dehumidifier and air filters and said the main problem was the crawl space but that wouldn't impact the interior of the home.
Because of this we ended up purchasing the home. A few months in as my 5 year old becomes sicker and sicker we end up finding SO MUCH MOLD in our ductwork. Spraying right onto my babies all day. We have now had to spend $30,000 in remediation and $10,000 in treatment to heal from mold AGAIN. If he had done a basic visual inspection and looked into the air ducts with a flashlight we would have never bought this house or gotten sicker.
I am not one to post negative reviews but this was neglect and when I emailed him after to share these photos I never even received a response. I just don't know the point of an inspector if he isn't going to do a full and comprehensive inspection. Mold illness can destroy people and his frivolousness has caused my family to become so sick and cost us so so much money.
Because of this we ended up purchasing the home. A few months in as my 5 year old becomes sicker and sicker we end up finding SO MUCH MOLD in our ductwork. Spraying right onto my babies all day. We have now had to spend $30,000 in remediation and $10,000 in treatment to heal from mold AGAIN. If he had done a basic visual inspection and looked into the air ducts with a flashlight we would have never bought this house or gotten sicker.
I am not one to post negative reviews but this was neglect and when I emailed him after to share these photos I never even received a response. I just don't know the point of an inspector if he isn't going to do a full and comprehensive inspection. Mold illness can destroy people and his frivolousness has caused my family to become so sick and cost us so so much money.
Phillip Hartley
Oct 03, 2021
Louis is not only quick to return calls, but he is extremely courteous and professional. He has a wealth of knowledge in his industry--the type that only comes with many years of dedication and experience. He also demonstrates great concern for honesty and ethical practice. On top of all of these things, he takes the time to explain things in a way that is easy to understand. I highly recommend him to anyone who needs this type of service.
Derek Britt
Aug 30, 2021
With the heart of a teacher, Louis was able to immediately identify the root cause of my moisture issues and propose a treatment plan. He was patient with me and explained everything along the way. He also provided guidance for how to avoid my particular issue in the future and offered to follow up several months later, just to make sure everything was still going well. If I've ever got another moisture problem, I've found my go-to person for the job here with GLS Engineering.
Kim Madden
Feb 04, 2020
As owner of a local heating and air conditioning company, I've had many occasions where homeowners have expressed concerns over humidity, mold, and mildew in their homes. Louis Schweers at GLS Engineering has been a wealth of knowledge over the years and has provided excellent information and solutions to combat moisture issues. He is our "go to" source for the really tough problems. If you're concerned about possible health risks and damage to your home due to mold and high humidity, GLS Engineering is the one to call. Highly recommend!
Kim Madden
Oct 19, 2019
As owner of a local heating and air conditioning company, I've had many occasions where homeowners have expressed concerns over humidity, mold, and mildew in their homes. Louis Schweers at GLS Engineering has been a wealth of knowledge over the years and has provided excellent information and solutions to combat moisture issues. He is our "go to" source for the really tough problems. If you're concerned about possible health risks and damage to your home due to mold and high humidity, GLS Engineering is the one to call. Highly recommend!
Chris Carson
Jan 03, 2019
I must say Louis was a pleasure to work with. We suspected we had a mold problem in our home and Louis confirmed we in fact did. He conducted a complete indoor air quality analysis and helped us identify the issues and more importantly helped get them resolved. He's extremely thorough, knowledgeable, professional, courteous, and punctual. I highly recommend Louis.
Frank Metzger
Oct 18, 2016