IICRC and CRI standards, explained for owners

Customers, carpet manufacturers and insurance adjusters all ask some version of the same question: does your company clean to a recognized standard? Two organizations come up again and again. The IICRC publishes cleaning and restoration standards and certifies technicians. The Carpet and Rug Institute (CRI) tests carpet cleaning products and equipment.

This guide explains what each one covers, how a technician or company earns the credential, and how to describe what you hold without overstating it. It uses only the free public pages from each organization. The standards themselves are sold, and nothing here replaces reading them.

What a standard of care is, and why it matters

The IICRC describes its ANSI/IICRC standards as "voluntary consensus based Standards that are accepted as the Standard of Care in the industry" (IICRC Standards FAQs). In other words, they are the reference point when someone asks whether a job was done properly. The IICRC says its standards "serve as the foundation for training, certification, legal reference, and everyday field practice" (IICRC Standards).

They are developed under American National Standards Institute (ANSI) rules, and the IICRC explains that accreditation means ANSI "has recognized and verified that the requirements for due process and consensus have been met" (IICRC Standards FAQs).

Warranties are the everyday reason to care. The CRI says proper cleaning will "keep your carpet warranties intact" (CRI, Cleaning and Maintenance), and the IICRC lists "Complete warranty work for various carpet mills and manufacturers" among the uses of its carpet cleaning certification (IICRC, CCT). When a warranty is in question, ask the customer to check the manufacturer's own terms.

What S100 covers

ANSI/IICRC S100 is the Standard for Professional Cleaning of Textile Floor Coverings. The current edition is the Seventh Edition, 2021, and the IICRC notes that a new consensus body "has begun work to revise the 2021 ANSI/IICRC S100 Standard" (IICRC, S100).

According to the IICRC's overview, S100 "describes the procedures, methods, and systems to be followed when performing professional commercial and residential textile floor coverings (e.g., carpet and rugs) maintenance and cleaning." The overview lists 13 components it gives procedures for, including:

• Principles of carpet and rug cleaning
• Carpet fibers, construction, and styles
• Soil management principles
• Methods and systems of cleaning
• Administrative procedures
• Pre-cleaning and post-cleaning inspections

The detail sits in the standard itself, which the IICRC sells. Its FAQs say each digital purchase "is intended to be used by one person," and that the IICRC "does not respond to technical questions" about its standards (IICRC Standards FAQs). If you want your crew working from the actual text, buy a copy for whoever trains them.

How technicians get certified: CCT

The IICRC's Carpet Cleaning Technician (CCT) certification deals with "installed broadloom carpet," with "a residential and light commercial emphasis" (IICRC, CCT). From the CCT page and the IICRC FAQs:

• Prerequisites: "There are no prerequisites for this certification."
• Format: live-stream or in-person, and offered in Spanish.
• Exam: in-person applicants take the exam on the last day of the class. Live-stream applicants use the IICRC's online exam portal and have 45 days from the last day of the class to complete it. Two retests are allowed within 45 days of the exam date. The FAQs listed the initial exam fee as $80 when this guide was checked in November 2026.
• Renewal: "Annual renewal is required to keep your certifications active."
• Continuing education: technicians need "14 CECs (hours) every four years," and Master and Inspector certifications need 14 every two years. The technician is responsible for sending proof of CEC hours to the IICRC.

One detail matters for owners: "Your Certifications follow you and not your company." A business can separately register as an IICRC Certified Firm. The FAQs list the requirements as current liability insurance, "At least one active Certified Technician" and a completed application, renewed each year (IICRC FAQs; IICRC Certified Firms).

When S500 matters: water damage

When carpet is soaked from a leak or a flood, a different standard applies. ANSI/IICRC S500, the Standard for Professional Water Damage Restoration (Fifth Edition, 2021, now being revised), "describes the procedures to be followed and the precautions to be taken when performing water damage restoration in residential, commercial, and institutional buildings" (IICRC, S500). Its listed components include microbiology of water damage, psychrometry and drying technology, and antimicrobial technology.

S500 also assumes that finding and fixing the source of the water "is the responsibility of the property owner and not the restorer," though the owner may contract the restorer or other experts to do that work. The matching IICRC certification is Water Damage Restoration Technician (WRT), which the IICRC says covers "water losses, sewer backflows, and contamination such as mold" (IICRC, WRT). If you take water jobs, be clear with the customer and any adjuster about what your training covers.

What CRI's Seal of Approval means

The CRI calls its Seal of Approval (SOA) "the carpet industry's only scientific program to test the effectiveness of carpet cleaning products and equipment." Certified products "effectively remove soil without adversely affecting the appearance or the performance of the carpet," according to CRI (CRI, Seal of Approval Program).

The seal is for products, not people. A cleaning company is recognized for what it uses: "Carpet cleaning professionals who use Seal of Approval solutions in conjunction with Seal of Approval equipment are eligible to be recognized as Seal of Approval service providers" (CRI, SOA Service Providers). CRI asks applicants for:

1. A registration form listing the SOA-certified equipment and chemicals used in day-to-day cleaning.
2. An annual fee, listed by CRI as $100 when this guide was checked in November 2026.
3. A participation agreement to follow program guidelines, which protect use of the SOA logo, signed by a company officer.

CRI also states that "Many major carpet manufacturers require or strongly recommend the use of Seal of Approval products" (CRI, SOA Service Providers). For homeowners, CRI recommends you "Professionally deep clean your carpets every 12 to 18 months" (CRI, Cleaning and Maintenance), and it offers a free Spot Solver tool, a useful link to give customers between visits.

Talking about certifications honestly

The FTC's basic rule is that advertising "must be truthful and non-deceptive," and that advertisers need proof before an ad runs (FTC, Advertising FAQ's: A Guide for Small Business). For credentials, that comes down to a few habits:

• Say who holds what. Certifications belong to the technician, so "our lead technician is IICRC CCT certified" can be accurate when "IICRC certified company" is not. Use the company claim only if you are a registered Certified Firm.
• Use logos only as each program allows. The IICRC publishes a list of firms that "have violated the IICRC logo usage policy" (IICRC, Invalid Firms).
• Keep claims current. Remove a credential from your site, vehicles and profiles when it lapses or the technician who holds it leaves.
• Treat "we clean to S100" as a promise about procedure. Say it only if your crew is trained on the standard and follows it.
• Point customers to verification. The IICRC Global Locator lists certified firms and technicians, and CRI's service provider page has a "Find an SOA Service Provider near you" link.

CarpetOS email and text campaigns include win-back for customers who are due for a clean, which pairs well with CRI's 12-to-18-month advice.

Quick checklist

• Match credentials to your work: CCT for carpet cleaning, WRT if you take water damage jobs.
• Buy the S100 standard, and S500 if relevant, for whoever trains your crew.
• Track each technician's renewal date and continuing education hours.
• If you use SOA-certified solutions and equipment, consider applying as an SOA service provider.
• Check your website, vehicles and Google profile: every credential named should be current and correctly attributed.
• Confirm current fees and requirements on the IICRC and CRI sites before you budget.

Sources

• IICRC, S100 Standard for Professional Cleaning of Textile Floor Coverings — https://iicrc.org/s100/
• IICRC, Carpet Cleaning Technician (CCT) — https://iicrc.org/cct/
• IICRC, S500 Standard for Professional Water Damage Restoration — https://iicrc.org/s500/
• IICRC, Water Damage Restoration Technician (WRT) — https://iicrc.org/wrt/
• IICRC, Standards — https://iicrc.org/iicrcstandards/
• IICRC, Standards FAQs — https://iicrc.org/iicrcstandardsfaqs/
• IICRC, FAQs — https://iicrc.org/iicrcfaqs/
• IICRC, Certified Firms — https://iicrc.org/iicrccertifiedfirm/
• IICRC, Invalid Firms — https://iicrc.org/invalid-firms/
• IICRC, Global Locator — https://iicrc.org/iicrcgloballocator/
• Carpet and Rug Institute, Seal of Approval Program — https://carpet-rug.org/testing/seal-of-approval-program/
• Carpet and Rug Institute, Seal of Approval Service Providers — https://carpet-rug.org/testing/seal-of-approval-service-providers/
• Carpet and Rug Institute, Cleaning and Maintenance — https://carpet-rug.org/carpet-for-homes/cleaning-and-maintenance/
• Carpet and Rug Institute, Spot Solver — https://carpet-rug.org/spot-solver/
• Federal Trade Commission, Advertising FAQ's: A Guide for Small Business (April 2001, edited January 2025) — https://www.ftc.gov/business-guidance/resources/advertising-faqs-guide-small-business