What our satisfied customers are saying about us:
“During my spring AC service, the tech found mold in my HVAC ducts. After a little study, it became quickly apparent the scope of the necessary remediation work was beyond my capabilities. I talked to several companies, did more research, and although IES was not the least expensive, their recommendations as to what needed to be done were by far the closest match to what I had be able to learn about the problem on my own. They did the job in one day; were professional, friendly, and helpful; patient with my questions, and left the house as clean as when they arrived. Once the work was completed, they e-mailed me before and after pictures of the inside of the ducts, which showed a dramatic improvement. They even arranged for me to get a $190 rebate from Duke Power, something I had never considered. I was very pleased with IES’s performance from the time I contacted them through the end of the project. I am also happy to no longer have to worry about potentially dangerous mold spores being blown about the house and would definitely recommend IES to anyone with similar mold problems.”
John M. – 2017
“We had a rampant mold problem. IES identified the issue, scheduled the remediation within a few days and knocked the job out in a day. They were profession, courteous, and did a fantastic job. We would highly recommend them and use them again if ever needed.”
Steve B. – 2017
“All aspects of my job were handled professionally from the original visit and very specific estimate of work to be performed to scheduling our work and finally the install team showed up exactly on time and did an excellent job. I am very satisfied.”
Cliff – 2017
“A faint smell of mildew prompted us to have the crawlspace of our 1970s house encapsulated. Four estimates were obtained, all with different solutions, just to confuse us, but it was the thorough inspection and recommendations by Robby Cleere of IES that made the most sense. Frequent communication from Stephanie Maresca before, during, and after the encapsulation kept us informed of each step of the process. Miguel and his crew, who did the actual work, were both professional and efficient. They also did an excellent clean-up, which is something we don’t often see. Would definitely recommend IES!”
Barbara – 2016
“IES removed all air duct insulation (attic and crawl space); cleaned, sealed and re-insulated all ducts; removed all crawl-space insulation; removed mold, cleaned/sealed floor/joists, installed new insulation; sealed crawl space from ground and outside; added fresh air supply to HVAC system and supply air to crawl space; sealed and added new insulation to attic. House dust and odors have been eliminated, and cooling costs for the 3 HVAC systems have been cut in half. IES provided a significant credit for finishing the job sooner than anticipated. Work crew was very responsive. IES staff was very knowledgeable and helpful.”
Anthony – Benson 2014
“I purchased the Big Deal of Indoor Environmental Services Inc. They did a whole house evaluation for energy audit and then they provided me with suggestions on how I can improve the energy efficiency of my house. It was fine. They came shortly after I purchased the big deal, I think within a few weeks after I purchased it. There were no extra charges apart from the big deal. They were very professional and very knowledgeable.“
Carla – Raleigh 2014
“Partial removal of water damaged floor / subfloor, remediation / cleaning of mold underneath. Sealed remaining subfloor to prevent repeat occurrence (work included protection of areas outside of the immediate work area with masking, HEPA air scrubbers, and by introducing negative air pressure in the work area to vent mold spores and dust outside the home). The first great thing about this provider is that a live body answers the phone every time – no voicemail. They were able to come out the next business day to provide an estimate, and schedule the work for early the following week. The crew arrived on-time and took all expected steps to protect the rest of our home from any mold / dust released as work was being performed. The work was completed quickly and professionally, and all clean-up was completed to my satisfaction. I would use them again should I have a need for the type of work they perform.”
David – Cary 2014
“Indoor Environmental Systems (IES) sealed off our crawlspace and cleaned and painted our ductwork. I got 3 quotes from various companies that perform crawlspace encapsulation. IES was in the middle quoting around $10,000 plus they were the only one to offer a lifetime warranty. Their plan on my 1970’s house was to remove all the old insulation, scrub down all the wood to remove mold, spray the wood to prevent future mold growth, wipe down all the duct work and patch any holes, seal all the walls, put up insulation board on the walls, put down a thick, reflective floor cover, and several other items. This would make the crawlspace essentially like another room. The crew was very polite and professional. They arrived on time and worked diligently. After the first day’s work, there was one item that was missed, so when they returned the following day I relayed that info to them and they apologized for missing it and had no problem doing some rework to fix the issue. We also had them clean and apply a mold preventative paint to all of our ductwork for an additional cost. It has been almost a year since the work was done. We’ve had a very wet summer and I haven’t seen any moisture in the crawlspace at all. I had bought 5 temp/humidity sensors to place around the house and crawlspace. During the damp summer, the crawlspace is usually about 5 degrees cooler than the house with a 5% higher humidity than the house. I am very pleased with the results and would recommend IES to others looking to do similar work.”
Jeff – Raleigh 2014
“The service was great and exactly as quoted/advertised. We had interviewed several companies for the work. IES was certainly the higher priced quote, but our confidence level in the quality of work they would perform was high, and very important due to serious health issues of a family member. Steve was very helpful when he came to assess and quote the job. Stephanie was always available by phone and very responsive with questions throughout the scheduling and actual work process. Miguel did an exceptional job of leading the team in the actual remediation. We have a very large crawlspace (~2400 sq. ft.) and it was amazing to observe how efficient they were while doing an exceptional job. It was very cold the two days they came in January, but they worked non-stop throughout the project. When I was quoted 2 days to perform the entire remediation, I simply couldn’t believe it could be done in that amount of time – but they completed the project on time. When they finished, there was no evidence of the massive amount of work (they promptly hauled all materials and old fiberglass to the dump) except for our beautifully lined crawlspace. If you have a serious mold problem and want to make sure the job is done right, professionally and with quality, I would highly recommend them.”
Tammy – Raleigh 2014
“We have utilized Steve and Indoor Environmental Systems to completely seal the crawlspace, upgrade HVAC ductwork, and other energy tweaks in three homes of varying sizes, over a five-year period. One of the crawlspace projects was exceptionally large (nearly two stories high in some areas). The primary objective was to eliminate any potential for humidity and mold issues, while incorporating some passive strategies to reduce radon levels. (All three homes were already below EPA standards, but for personal peace of mind we wanted to push the numbers as low as possible). In short, the work was meticulously engineered and delivered, and the sealed spaces perform exceptionally well. Steve has a great crew. The resulting “rooms” are nearly NASA-grade clean, remain completely dry, maintain the temperature of the living space (reducing energy use), and all have significantly reduced radon levels. An additional benefit is that sealed crawlspaces remain pretty much bug-free… The IES team always responds quickly whenever we have a question, concern, or require a fix (stuff happens). I would highly recommend.
Karl – Cary 2014
“Indoor Environmental Systems Inc did an annual inspection with a host of services. They went down into the crawl space, checked that the walls and doors were sealed, vents were cleaned, and they checked for mold. They even cleaned out my dryer vent to keep it safe and running smoothly. Indoor Environmental Systems Inc was very professional, friendly, thorough and efficient. I think they are a really top notch group.”
Nancy – Cary 2014
“IES was fantastic from fist contact through project completion. Steve came out for the initial consult and really impressed me with his knowledge. I was also very happy that he was willing to talk technical with me. I have some experience and like to talk details, but not all providers are willing to do that. After getting our quote and making a decision to move forward, Stephanie stepped in as the project manager. She was a pleasure to work with – knowledgeable, friendly, and responsive to all my questions. She set us up with an appointment for the project and let us know approximate timing through the course of the 2-day project. Since we were replacing HVAC ducts, there would be times when the A/C wasn’t running. Plus we would need to run the fan continuously while the materials in the crawl space cured. It was very nice going into the project with accurate expectations. The crew that did the work was also wonderful. They arrived on time and did high-quality work. As someone who’s pretty handy, I was pleased with their work. Overall, we’ve been thrilled with the sealed crawl space. We no longer have moisture or mold problems. As a bonus, the house appears to be more energy efficient. We have another job spec’d out with IES for our attic spaces, and we’ll have them out as soon as we have the other constraints completed.”
Rick – Raleigh 2014
“IES is a fantastic company that does high quality work. They are very responsive and easy to deal with. The energy audit/initial visit was very informative, and the follow-up work on the crawlspace and air ducts was thorough and professional. We had a minor miscommunication early-on, which they went beyond the call of duty to rectify. They have been a pleasure to work with and we look forward to our improved air quality, energy efficiency and mold-free living!”
Jeff – Durham 2014
“It went very well. The tech showed up pretty much on schedule. Performed the audit and explained his process as he went. We were sent a written report several days later with the audit information and assessment. We also got a quote for services to address the recommended improvements for energy efficiencies. I was really impressed because I had originally purchased as an Angie’s List deal and the time had expired on my coupon. The honored the coupon with no problem or extra charges and performed the work in a timely professional manner. We are considering the quotes and will undertake some of the projects ourselves.”
Robert – Raleigh 2014
“Overall, it went well. There was a two-month delay getting my appointment on the calendar, but it was over the busy Thanksgiving/Christmas/New Years holiday season. When the company connected with me, however, things moved very quickly. Within a week, the technician arrived to inspect the house: roof attic, side attics, windows, doors, ducts, vents — all three floors of it. He was professional and pleasant, and he was pleased to have me accompany him throughout the job, giving me a running commentary and answering all my questions. He took photographs of problem areas and verified his findings with an infrared camera. Within 48 hours, the results of his inspection and his recommendations, complete with highlighted illustrations from the photos he made were emailed to me by the project manager in a neat little report. An itemized quote was also sent, pricing each problem area, and I was free to pick and choose any or none of the offered remediations. From the scheduler to the technician to the project manager, it was a very positive and worthwhile energy audit of the home.”
Terry – Durham
January 9, 2013
“We were worried about mold as we had some leakage from upstairs showers. During the initial inspection, it was determined that the leaks were temporary (we had resealed drain gaskets), and there was no issue from the showers. However, the crawl space did show lots of evidence of mold. The suggested remedy for our air quality issues was to seal the crawlspace and especially seal up the wall that bordered the living space wall of the house (split level ranch). The intake ducts for the HVAC were completely unsealed and were drawing in air from the crawlspace. There was mold present all over this area. The estimate for was a solid day of work.
The crew was there early. Some focused on cleaning the ducts while others worked on sealing the crawlspace. Everything was done exactly as planned.”
Aysegul – Raleigh
January 2, 2013
“IES was the third group that we had out and they were head and shoulders above the others. They completed a very detailed inspection and walk through and produced detailed reports and quotes. It was very clear that they knew what they were talking about. The remediation work went very smooth. I was very impressed with all the work done by this group to clean up a pretty extensive mold problem. This entire group is professional, knowledgeable, customer focused and did fantastic work.”
William – Raleigh
December 5, 2012
“My daughter was convinced I had mold in my house. This visit confirmed we did NOT have mold. But this information I received about what could be done with my duct work and crawl space to improve energy efficiency was very helpful, and I probably will use this company again to make recommended improvements.”
Jane – Raleigh
October 3, 2012
“This company did a fine job in increasing my R factor from 19 to 48. Sealed my vents to the living area, cleaned the duct work, sealed the AC unit in attic, streamlined the duct work in attic for greater efficiency and finally added a layer of composite material to shield the heat in and cold out in winter and vice versa in summer to decrease energy usage. Thorough crew, on time.”
David – Garner
August 30, 2012
“Our crawlspace was so damp and humid that it resembles a tropical rain forest. After 2 years of research and trying to be our own general contractor we found IES. IES organized all parts of the project and accomplished the work in 3 days. They were completely professional in all aspects. They were knowledgeable of all aspects of work to be done. In the first interview, they were able to outline and describe what was needed. They did a complete mold remediation and treatment for long-term effectiveness on the wood substructure of the house. This is significant for the prevention of termite infestation. They replaced all old ductwork and redesigned to accommodate the addition of a mini split heat pump. They completely insulated and enclosed crawlspace. Our crawlspace has been damper than the outdoor environment. They installed a dehumidifier to assist controlling the extreme humidity and had all extra electrical outlets installed for 2 sump pumps, 2 heat pumps, one dehumidifier. They also had an HVAC company to install mini split heat pump w/separate ductwork.
They answered every question I ever had before starting the multi-faceted project, during and after the project was finished. They were very accommodating – quick, clean, polite, informative, patient technicians and management. The technicians were always working, clean, polite and helpful if I had a question. Because of the thorough encapsulation of the crawlspace, they also installed an FFAVS for fresh air ventilation and filtration. All work was completed in three days.”
MJ – Raleigh
May 31, 2012
“I previously had a problem, and they provided an assessment. They told me what needed to be done and recommended other things to save me money in the long run. They went over some alternatives, too. I thought what they proposed was a good idea. They cleaned up all of that might’ve been growing in the basement, and sealed my attic.
They were fabulous to work with! I don’t think I’ve ever worked with a better company. It was an expensive job, but worth every penny. The gentleman and his wife that run the company are just exceptional people. They made sure I’d receive great service and were interested in doing a quality job. They provided me with a lot of information and answered all of my questions, explaining everything to me thorough. I felt very comfortable with all of the information that they had provided, since I did do some of my own research. I visited with another gentleman who had a walk-in basement done by them, and he raved about them too! Their crew that completed the work was wonderful as well. Since they’ve done the work, my utility bills have decreased. I know that I’m breathing clean, quality air. I’ve recommended them to my friends, and would recommend them to anyone.”
Mary – Cary
January 27, 2012
“I think they’re one of the more expensive companies, but they do have a lifetime warranty on toxic mold, so I think it’s the worth the money. They were very accommodating, making time to do our work the last week of the year so we could get the tax break. They were also professional and good with following up too; we’ve been talking with them for awhile, about 6 months. It was a good experience overall!”
Jennifer – Hillsborough
December 26, 2011
“We had just recently moved to North Raleigh from Southern California the month prior and rented a home, sight-unseen. My two year old was sick within a few days, my five year old daughter after a few days thereafter and after about a week my wife and I came down with acute sinusitis and bronchitis. It was really, really bad. I found mold growing under a couple of the air vents and reported it to the property manager. A few days later, the property manager sent out a “certified” mold technician who came out and did a visual inspection of the dwelling and air sampling, but found nothing. The property manager informed us that there was nothing wrong with the rental and we would not be released from our 12-month lease agreement.
I needed a competent professional to get to the bottom of what was hurting my family, so I selected Indoor Environment Systems. Steve did not disappoint. He went through all of the interior spaces of the home (including the attic, crawlspace, and HVAC ducting) he documented everything he found with digital photographs, tape lift samples and air samples. He had the lab results complete within a day or so and sent a detailed PDF report to me via email. When confronted with Steve’s authoritative and detailed report, the property manager “decided” to release us from our lease agreement.
Steve – who is also the owner – was very personable and took time to explain the factors affecting the indoor air quality of a home so I would know what to look for in the future. Steve is someone who clearly knows his trade and the quality of his work reflects that he cares deeply about what he does. Not surprisingly, he guarantee’s all his work. His indoor air quality report was thorough and authoritative; far superior to what was produced by the property manager’s chosen company. I highly recommend Steve and his company and although I compensated Steve fairly for his services, I feel that I owe him a debt because his attention to detail saved me and my family from a potentially dangerous situation.”
Jonathan – Cary
November 14, 2011
“After a walk through review of my whole house, and a discussion of my concerns about excess heat in the summertime, I was given a list of ideas for energy efficiency projects I could do myself. I was also provided a proposal to add insulation, seal air gaps, and install an attic radiant barrier. I accepted the proposal after doing some research of my own. The installation went very well. The workers were on time, were careful to protect my carpets and property, and did a thorough and complete installation. While the price was probably not the lowest I could have gotten, the work was done so well and quickly, that I believe I received excellent value.”
Theodore – Durham
March 15, 2011
“We purchased a large home with a disastrous crawlspace: moldy, wet, falling insulation, rodents, etc. Indoor Environmental Systems did a very thorough on site assessment and gave us an estimate for a total makeover. They were very specific about the scope of the work and discussed in detail the benefits of crawl space vapor sealing and attic sealing. We had not planned on investing so much money in what was originally going to be a cleanup of the crawlspace, but after doing our research we were convinced that the energy efficiency we would gain would be tremendous. They did a meticulous job on the 3000 square foot crawl space, spending many 100 degree days underneath the house. We uncovered some foundation issues and they came back later to help clean up after the repairs at no charge. They discovered critical problems in the air system flex ducts which we also subsequently had repaired. The work was very professional. Great team, careful work, and excellent follow-up throughout. The air in the home is now as clean as can be. We highly recommend their services!”
Catalina – Hillsborough
June 22, 2011
“We chose this company over others despite the higher costs because they were 1) performing far more extensive work for the money and 2) they offered the only plan for lifetime warranty against a return of the mold versus one to two years for others. Viewed from the warranty, the price was more than competitive. If we had to redo the work of anyone else, the price would have more than doubled.
They arrived on time for both the estimate and when the work began. The work took almost two full days to complete. They were at all times professional, polite and worked diligently. That was important when realizing that you live with a very noisy air filtration system in the house while work is being done. They removed everything from the crawl space, which was no small feat. They had to “drag” a lot of materials back and forth across the front lawn near the garden, but they were extremely careful of not damaging anything.
When they moved inside the house the next day to clean and seal all the duct work, they were again extremely careful. They placed plastic runners over the hardwood floors and carpeting up the stairs and into all the rooms, and carefully guided the hoses over the hand railing so as not to just let it drag across the finish.
When they were done, they patiently waited for us to select what items we wanted to return under the house and what items we wanted to dispose of and they then took care of disposing of the items for us. When they left, every bit of trash was gone with them and there was nothing left behind to tell that they had ever been here.
I can say that my nose and sinuses detect no mold at all, and that is a huge relief! Though the cost is big, it is not as big as the relief from the mold, the pleasure of breathing clean air and the knowledge that we have a long term warranty. Great job guys, and thank you!”
Cathryn – Garner
June 13, 2011
“I took advantage of the Angie’s List offer to have IES do an energy audit. They contacted me right away. IES could not have been more professional or helpful and took the time to explain what they were doing. We then discussed different options and picked several that would fit my price range. A quote came right away and a time was set up; he is very responsive to any questions. Miguel and his crew were great. I had attic air sealing done to fill gaps and an attic ladder radiant barrier installed, as well as a water heater jacket and gaskets (weather stripping) for all the windows. I could not be more pleased and would definitely both use IES again and refer friends to them.”
Jeannie – Morrisville
June 6, 2011
“IES provided an accurate estimate and all details. They were involved, knowledgeable and very personable. Miguel was in charge of the crew. He was very responsive and very easy to work with. They arrived on time and worked diligently the entire day. The crew was great! Once the job was completed, there was no outside evidence of the work. Under the house is so pristine that we could have a meal down there. This was our best experience with work on our home—after 35 years of remodeling and upgrading. Steve has a wonderful staff and IES deserves all the great reviews.”
Jackie – Hillsborough
April 8, 2011