Engineering
Cleaner Air
Since 2011
Since 2011, SaniTech Services — a women-owned, NADCA-certified company — has taken pride in providing the highest standard of quality, professionalism, and knowledge in the air duct cleaning industry. Our philosophy is to constantly evolve to meet the needs of the ever-changing technology in our industry, and to find innovative ways to meet those needs.
"Innovation occurs when the creative concept emerges in concert with the technical means to realize it."

What Drives Us
SaniTech's goals are simple — continuous improvement, respect, and credibility. As certified members of NADCA, we hold ourselves to the highest standards in our industry. Three commitments shape how we work with every client.
Develop client relationships built on mutual trust and respect.
Direct all projects in a professional manner, with the same urgency as our clients.
Provide facts and solutions — not obstacles.
Precision
Every project follows NADCA's ACR standard. We measure, document, and verify results — because clean air isn't a guess, it's an engineered outcome.
Integrity
We provide honest assessments, transparent pricing, and detailed documentation. If your system doesn't need cleaning, we'll tell you.
Excellence
Our ASCS-certified specialists undergo continuous training. We invest in the latest equipment and stay ahead of industry developments.
A Timeline of Growth
Founded
SaniTech Services formally incorporated, dedicated to the highest standard of quality, professionalism, and knowledge in the air duct cleaning industry.
NADCA Membership
Became an official member of the National Air Duct Cleaners Association, committing to the highest industry standards.
NYC SCA Certified
Earned NYC School Construction Authority certification, enabling us to service New York City public schools.
WBE Certification
Recognized as a NYS, NYC, and Port Authority NY/NJ Women-Owned Business Enterprise, reinforcing our commitment to diverse leadership.
Office, Project Managers & Skilled Technicians
From our professional office staff and skilled technicians, led by experienced project managers, every project is treated with the same urgency and expectations — and delivered on time and on budget.
SaniTech Services is certified and completely insured, so you can rely on us for experienced, professional care of your business or home.
Kathy Madarasz
President
As President of SaniTech Services, Kathy Madarasz directs all aspects of the company, including finances, field operations, and regulatory compliance.
Her experience in the Air Duct Cleaning industry, beginning at ENVIROspect in 2003, has contributed to the success of SaniTech.
Kathy also oversees OSHA compliance and training for all field technicians.
When not working, Kathy enjoys spending time with her grandkids, going to the gym and the beach, and gardening.
Bobby Madarasz
Vice President
Bobby Madarasz is the force behind Business Development and Staff Management at SaniTech Services. Gaining new customers and retaining existing ones is mission number one for him.
Beginning in 1983, Bobby has been successfully involved in Facilities Management, Construction Management, Disaster Restoration, and Air Duct Cleaning.
His certifications include OSHA 40, NADCA Air Systems Cleaning Specialist (ASCS), and Certified Ventilation Inspector (CVI), a designation held by only six people in New York State.
In his free time, Bobby enjoys family time, reading, fitness, and the Catskill Mountains.
Richard Held
Operations Manager
Richie Held’s unmatched experience in the Air Duct Cleaning industry immediately gives SaniTech Services an edge on all projects. Since the 1980s, Richie has successfully been involved in all aspects of Air Duct Cleaning, with every type of client possible.
A skilled tradesman, Richie has thrived on sharing his experience and expertise with the next generation in our industry.
Not only has Richie achieved his NADCA Air Systems Cleaning Specialist (ASCS) certification, but he was also the first in NYS to become an ASCS back in November 1995.
His other certifications include OSHA 40/OSHA Supervisor as well as NYS DOL Mold Remediator.
When he is not sharing his wealth of knowledge with others, Richie enjoys classic cars, family, and camping.
Sharon Madramuthu
Project Administrator
In this fast-paced role for SaniTech Services, Sharon coordinates all projects from the initial call to a successful completion.
She oversees project documentation and serves as the client point of contact. Sharon is involved with project scheduling, communication with field technicians, and contract and insurance requirements, ensuring services are completed safely, on time, and in compliance with project specifications.
Her strong customer service skills, expertise in scheduling and document management, and experience in project execution have contributed to SaniTech Services’ success while maintaining the highest standards of quality and client satisfaction.
When she is not working, Sharon enjoys gardening, cooking, and spending time with her family.
Danielle Shouler
Accounting Manager
Danielle manages all financial operations at SaniTech Services, including general accounting, accounts payable, accounts receivable, and payroll processing in compliance with state and federal prevailing wage requirements. She ensures timely and accurate certified payroll, sales tax, withholding tax, and retirement plan remittances and filings. Maintaining the accuracy and completeness of our monthly, quarterly, and annual financial close is always her highest priority.
Danielle earned her Bachelor of Science degree in Accounting from Long Island University, a Project Management Professional Certificate from Stony Brook University, and a Certificate in Management and Leadership from the University of Utah.
Outside of her career, Danielle enjoys visiting with family and friends, reading, gardening, and going on long walks in our beautiful Long Island parks.
Tom Randell
Project Supervisor
Since entering the Air Duct Cleaning industry at 19 years of age after trade school, Tom has been a sponge for knowledge of this business. Always trying to learn more and share his knowledge with his team, Tom has an ability to successfully lead, oversee, and execute projects of all types that is key to our success.
Tom’s certifications include NADCA Air Systems Cleaning Specialist (ASCS) and NYS DOL Mold Supervisor.
In his free time, Tom can be found cheering on his Islanders or four-wheeling on the beach.
Field Technicians
Our service technicians are rigorously trained and knowledgeable in all aspects of the latest safety procedures and air quality standards. Each technician is OSHA 40 certified, fully equipped with safety equipment as per OSHA guidelines, and trained according to NADCA's highest standards.
Facilities We Service
SaniTech Services performs services for facilities of every size and sector — each held to the same NADCA standard, whether the job is large or small.
Commercial Buildings
Health Care Facilities
Educational Facilities
Colleges & Universities · Public & Private Schools · NYC SCA Approved
Public Libraries
Fire & Police Departments
Residential Homes
Managing a school, campus, or commercial building in the five boroughs or on Long Island? See our commercial and NYC school HVAC duct cleaning service, including how NYC SCA and WBE certification fit into procurement.
Equipment & Credentials
Our outstanding reputation reflects investment in the latest cleaning technology — and a stack of credentials that opens doors on the toughest commercial projects.
HEPA Filtered Vacuum
Latest-technology negative-air systems contain dust at the source.
Robotic & Reel Inspection
Robotic crawlers and reel cameras reach the deepest runs in your system.
Video & Photo Documentation
Full visual record of work — before, during, and after.
NADCA Membership
The National Air Duct Cleaners Association (NADCA) is the global authority on HVAC system cleaning standards. Founded to establish best practices and ethical standards in the industry, NADCA sets the benchmark — known as the ACR Standard — that contractors must follow on commercial projects worldwide.
SaniTech Services is a proud NADCA member. What does that mean for you? Every project we take on is governed by the most rigorous industry standards available. Many commercial facility managers and procurement departments require NADCA membership as a prerequisite just to submit a bid — so when you work with SaniTech, you're already ahead of the compliance curve.
ASCS — Air Systems Cleaning Specialist
The Air Systems Cleaning Specialist (ASCS) designation is NADCA's premier individual certification for HVAC cleaning professionals. Earning it requires completing formal training, passing a rigorous written examination, and committing to annual recertification — ensuring that every ASCS-certified technician stays current with evolving industry standards.
For you as a client, this means the person running your project isn't just experienced — they're tested, verified, and held accountable every single year. The ASCS credential is one of the most respected in the field, and SaniTech's team carries it with the same commitment to quality they bring to every job.
CVI — Certified Ventilation Inspector
The Certified Ventilation Inspector (CVI) credential recognizes specialists trained to assess HVAC ventilation systems against NADCA's ACR Standard. Achieving CVI status requires both comprehensive training and passing a formal examination, with recertification required every two years to ensure inspectors remain at the forefront of the industry.
When SaniTech conducts an HVAC inspection for your facility, you receive more than an opinion — you receive a documented assessment by a credentialed inspector whose knowledge is regularly validated. That rigor matters when you're managing compliance, planning capital expenditures, or making the case to ownership that your systems are in good hands.
VSMR — Ventilation System Mold Remediator
NADCA's Ventilation System Mold Remediator (VSMR) credential identifies specialists trained specifically to identify, contain, and remediate mold within HVAC systems. Mold inside ductwork is a common — and serious — air quality issue, and remediating it incorrectly can spread the problem rather than solve it.
Holding the VSMR credential means our team has been trained on the procedures and containment methods that resolve the issue at its source, restoring air quality without putting building occupants at additional risk.
Certified Mold Remediation Contractor (NYS DOL)
SaniTech Services holds a Mold Remediation Contractor license from the New York State Department of Labor — a credential required by law for any commercial mold remediation work in New York State.
This certification confirms that SaniTech's processes, training, insurance, and reporting meet the State's full regulatory requirements. For property managers, school districts, and healthcare facilities, that means your remediation contractor is verified at the State level — not just self-attested.
OSHA Safety Certifications
Every SaniTech field technician carries OSHA 40 Hour and OSHA Permit-Required Confined Space Entry certifications. Together, these cover the safety procedures and protective equipment required on active job sites and for confined-space work — both routine on commercial HVAC projects.
OSHA training isn't a one-time box-check. Our field staff stay current on the protocols, equipment, and documentation requirements so every job site runs safely from setup through cleanup.
Authorized Product Applicators
SaniTech is an Authorized Applicator for Carlysle Hardcast HVAC sealing products and Monofoil antimicrobial coatings — two manufacturer-controlled credentials that allow us to install warrantied product applications in the field.
Authorization isn't open enrollment: manufacturers verify training, equipment, and quality of work before granting the designation. For you, it means SaniTech can install these products with the manufacturer's backing — not as a retrofit by an unqualified contractor.
Women-Owned Business Enterprise — NYS, NYC & Port Authority NY/NJ
SaniTech Services is certified as a Women-Owned Business Enterprise (WBE) by New York State, New York City, and the Port Authority of New York & New Jersey. Each certification confirms SaniTech meets ownership, financial, and insurance criteria established by that authority — and each must be renewed on its own schedule.
For public agencies, municipalities, and organizations with supplier diversity requirements, SaniTech's triple WBE certification means we are a pre-qualified vendor across the full range of New York and New Jersey's public and private sectors.
Certified NYC SCA Contractor
The New York City School Construction Authority (SCA) oversees construction, renovation, and facility work across the City's public school system — and only contractors that complete its pre-qualification process are eligible to perform that work. SaniTech Services is a certified NYC SCA contractor.
Pre-qualification means the SCA has vetted our experience, safety record, and insurance before we ever step on site. For school districts and facility teams, that means SaniTech is already approved to work in New York City public schools — the same standard we bring to every campus, library, and public building we service.
SaniTech and the Community
Long Island is more than just where we do business — it's our home. SaniTech Services supports the community by demanding excellence to keep the air quality and surfaces clean and healthy for the children and families who live here.
Memberships
- ▸IFMA Long Island — Member & Sponsor
- ▸Smithtown Rotary Club — Past Board of Directors
- ▸Smithtown Chamber of Commerce — Past Board of Directors
- ▸Smithtown Industry Advisory Board
- ▸Smithtown Booster Club — Past President
Sponsorships & Honors
- ▸Joe Winters Golf Outing & Winters Center for Autism
- ▸Ken Watson 911 Memorial Scholarship
- ▸Smithtown HS West Legend Football Coaches Award
- ▸Smithtown Athletics Hall of Fame