About SMS Indoor Environmental Cleaning Inc

Specializing in Complicated Projects  |  Over 30 Years of Experience  | Fully Insured and Certified

Specializing in Complicated Projects

Over 30 Years of Experience 

Fully Insured and Certified

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Hours:

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Mold cleaning

Learn More About Us

For more than 36 years, SMS Indoor Environmental Cleaning Inc has been a trusted partner in protecting the health, safety, and comfort of indoor environments across New England. We proudly serve homeowners, real estate professionals, property managers, facility directors, contractors, developers, and municipal, state, and federal organizations.


Our work centers on three critical services:

  • Mold Remediation
  • Rodent Feces & Urine Remediation
  • Air Duct Cleaning


Led by Owner Steve Timpany and Vice President Nancy Yannuzzi, our team brings deep expertise to every project. Both Steve and Nancy are seasoned expert witnesses, trainers, inspectors, and hands-on remediators, offering clients a rare combination of technical knowledge and practical field experience.


As a locally owned company, we take pride in delivering thorough diagnostics, precise project management, and detailed specification development for microbial remediation and air duct cleaning. Our background in IAQ/IEQ and green building practices ensures that every solution we provide is grounded in science, industry standards, and long-term environmental health.


At SMS, we don’t just clean environments—we restore confidence in the spaces where people live, work, and thrive.

Year Established

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Payment Types

  • American Express
  • Cash
  • Check
  • Discover
  • MasterCard
  • Visa

Languages

  • English
  • Portuguese

Certifications and Licenses

  • LEED AP - since 2007
  • Certified Energy Manager (2015 - 2018)
  • SC General Contractor's License (2009 - 2013)
  • Certified Mold Remediator
  • MA Home Improvement Contractors License

Our Memberships

  • We are members of the following:
  • Indoor Air Quality Association (IAQA) 1995 – Present 
  • Green Committee 2009 - 2014
  • Education Committee 2012 - 2016 (vice chair 2014)
  • Subcommittee to Develop New Classroom Course Criteria (2014)
  • Government Affairs Committee
  • US Green Building Council (USGBC) 2007 - 2018
  • National Air Duct Cleaners Association (NADCA) - Present
  • New England Association of Home Inspectors (NE ASHI) - Present
  • Society of Women Environmental Professionals (SWEP) (1996 - 2003)
  • Executive Board - 9 years
  • Co-chair - 3 years
  • Program Committee - 9 years

"The crew was very professional. They arrived on time and executed their plan in a neat matter. I am very pleased with the owner integrity and knowledge. The office support is simply one of a kind. I will certainly highly recommend SMS."

- Stoughton, MA