• Indoor Environmental Systems, Inc. (IES) is located in Cary, North Carolina and provides air, mold, water, and solar assessments, attic insulation, HVAC Services, sealed crawl spaces, "green" products, radon testing, water/mold remediation and more.
• IES is a local and trusted family owned company providing building science services since 1992.
• IES provides energy efficiency and indoor air quality assessments using infrared cameras, moisture meters, and air quality testing.
• Our employees provide weatherization and remediation services which come with 100% satisfaction guarantee.
• We are an approved contractor for Progress Energy and Advanced Energy and receive top ranking on Angie's list.
• Our mission is to help you see the big picture in regards to what's best for you and your home.  Our building assessments, pictorial reports and detailed quotes are prioritized and itemize.  This service helps you see the inefficiencies and indoor air quality issues of your home, which helps you, prioritize and budget.

“Thanks for such a great job!

You are a fantastic company with quality services” - Mr. A. Stilwell

For example:

• Plug the holes - It is important to stop air movement from your living area into the attic before you add more insulation.

• Ventilation - When making your building tighter you still need proper ventilation for health and safety.

• Allergens - Removing mold from your crawlspace can be more beneficial than cleaning dirt from your air ducts.

• There are no safe levels of radon - Sealed crawl spaces may increase radon levels in your home.

• We use our own employees, excellent craftsmanship, and offer a lifetime warranty.

• We save you money by providing multiple services for energy efficiency and air quality.

• Exclusive products:

  • CleanSeal non-toxic mold coating
  • IES Total Radiant Barrier Liner
  • Filtered Fresh Air Ventilation
  • Lifetime Warranty; no mold or radon

Indoor Environmental Systems, Inc. was founded by Steve McLeod in 1992.

• Mr. Mcleod is a Board Certified Microbial Consultant with 15 certifications in energy efficiency, mold remediation and indoor air quality.

• Our goal is to make your building more energy efficient by making it properly insulated.

• IES makes attics cool, clean and a highly efficient area, by air sealing and insulating with expanding foam and radiant barriers.

• IES transforms crawlspaces’ from wet, moldy, insect infested spaces to dry, energy efficient and guaranteed no mold growth, insects or radon!

• IES enhances the heating and air conditioning systems to provide filtered fresh air ventilation, whole house filtration, and humidification with guaranteed no mold growth.

• Our network of professionals provide complete fungal remediation services including, water damage assessment, laboratory analysis, demolition, construction and, if necessary, insurance arbitration and expert testimony.

IES manufactures the Filtered Fresh Air Ventilation System (FFAVS)

The FFAVS is an easy and inexpensive way to bring filtered fresh air into your home. The filtration system removes ozone, radon, lawn care chemicals, insecticides, pollen, mold, smog, and viruses. All "tight" buildings should have a filtered fresh intake system. IES is the local distributor of CleanSeal. CleanSeal is a non-toxic, anti-microbial coating which carries a manufactures lifetime warranty. This warranty is transferable and assures that mold will not grow back on the surfaces treated with CleanSeal. Once your home has been weatherized, mold removed and radon is not an issue, a solar site assessment can be performed which will determine how much sun exposure and electricity can be generated from your roof.