Recent Commercial Air Duct Cleaning Projects

At Envirotech Clean Air, we service both residential and commercial properties, removing and remediating mold and cleaning air ducts although commercial projects are our specialty. Learn more about the recent commercial projects we’ve completed.

Vermont Hospital

hospitalProblem: Severe mold growth on the interior duct mastic inside the cold deck ductwork serving hospital surgical suites.

Remediation: The ductwork was cleaned and the duct mastic was scrubbed with a fungistat, tested by an independent industrial hygiene consultant, and coated with an HVAC sealant.

Coordination: The project was performed on off hours and was coordinated with the HVAC Mechanical contractor, hospital facility personnel, and the independent industrial hygiene consultant.

air traffic controlFAA Air Traffic Control Tower

Problem:  Severe mold growth throughout the tower and base building.  Air traffic controllers exposed and sensitized to a point the several were unable to continue work. The location was the nation’s 25th busiest airport and the tower was operating throughout the project on a 24/7 by 365 schedule.

Remediation: All contaminated HVAC Systems were cleaned and inspected by a third party. The HVAC units and all system components (ductwork, VAVs, Fan Powered Boxes, etc.) were cleaned, inspected, photographed, and videotaped.

Coordination:  Envirotech Clean Air coordinated with the FAA, building services, IH firms and duct cleaning consultant; the building tenant’s and the tenant’s IH firms and other critical care stakeholders.

Phoenix Awards:  Envirotech was awarded the Restoration Industry Association’s (RIA) highest award for innovation in a remediation project while on the integrated team that completed this 3-year project in 2012.

high rise buildingBoston High Rise Office Building   

Problem:   Improper internal insulation installation in all high-pressure ductwork on 38 floors lead to premature degradation resulting in airborne fiberglass binder material.

Remediation: Remove all internal fiberglass in the high-pressure ductwork down to bare metal and seal the ductwork. Clean all associated ductwork, VAV boxes, and diffusers.

Coordination: Envirotech coordinated with the building’s owners, tenants, property management team, consulting engineers, industrial hygienists, as well as, multiple trades. All work was performed during off hours and was completely “invisible” to the building’s occupants. This building is extremely high profile with every floor being custom fitted out for the various tenants.

How to Improve the Indoor Air Quality in Your Home

dehumidifierAn increasing amount of people are suffering from allergies and allergy-like symptoms in their home, which is where a majority of their time is spent. These symptoms can be brought on by various pollutants within the home due to poor indoor air quality (IAQ). When there is inadequate ventilation and not enough outdoor air comes into the home to dilute these pollutants, indoor air quality can become poor. Not all allergies and allergy-like symptoms are due to indoor air quality, but you can help reduce the buildup of pollutants that cause some off these symptoms.

  • Utilize a dehumidifier to keep the moisture in your home between 30% and 50% – humidity that is too high can contribute to the growth of mold
  • Open the windows whenever possible to bring the outdoor air inside to help dilute indoor air emissions
  • Use HEPA vacuum cleaners to reduce dust and other pollutants in the home
  • Utilize air filtration products to help remove pollutants and contaminants from the home
  • Run exhaust vents when showering, cooking, and running the dishwasher
  • Keep an eye out for leaky pipes so they can be fixed before mold begins to grow and thrive off the moisture
  • Place air filtering plants around your home and be sure not to over water them!
  • Have your air ducts cleaned regularly to reduce the amount of dust and debris that is pushed through the registers into the rooms of your home

To schedule your air duct cleaning appointment, give Envirotech Clean Air a call today at (800) 698-1300.

Indoor Air Quality FAQ

Many individuals spend their time indoors, whether that be at work, at home, or in other various buildings making it important to have a comfortable indoor environment. As new homes and buildings are being built to be more efficient, the exchange of indoor and exterior air can be a very important factor. There are nationally accepted industry standards published by ASHRAE for both residential and commercial buildings.  These national standards dictate minimum requirements for air exchanges and ventilation in a building.  With various different ways to improve indoor air quality, it’s first important to understand exactly what indoor air quality is before taking steps to improve your IAQ.

What is Indoor Air Quality (IAQ)?Tower

Indoor Air Quality refers the air quality within and around a building and how it relates to the well-being of the occupants within the building.  Some factors that can influence indoor air quality include temperature, humidity, ventilation, air changes, outside air being brought in, mold from water damage, and exposure to chemicals.

Understanding indoor air quality and how to control common indoor contaminants can help reduce health concerns within the space.

What are the Qualities of Good IAQ?

The qualities of good indoor air quality include adequate ventilation to allow outside air into a building, comfortable temperatures and humidity levels, and control of pollutants inside of a building.

What are some of the Most Common Causes of IAQ Issues?

  • Lack of ventilation allowing outside air to enter a building
  • Poor maintenance of HVAC systems and air vents
  • Moisture and dampness due to leaks, flooding, and humidity
  • Contaminated air due to construction, remodeling or common dust
  • Chemicals or products used in the indoor environment

How Can I Improve My Indoor Air Quality?

There are many steps you can take to improve the indoor air quality in your home and office and reduce the levels of pollutants circulating through the air:

  • Keep windows closed when pollen and humidity levels are high
  • Store paint, household cleaners, and other chemicals in air-tight containers
  • Vacuum and clean regularly, with a HEPA filtered vacuum
  • Have your HVAC system regularly inspected and serviced
  • Keep the humidity level around 50% to reduce the growth of mold and mildew
  • Ensure you have proper ventilation (open you windows on warm days to allow outside air to enter the building)

What are the Benefits of Clean Air?

By removing airborne particles and pollutions, individuals suffering from allergies or asthma may see relief from clean air. Even healthy individuals will see an improvement in breathing because particulates that were once circulating and contaminating the indoor air are no longer entering the respiratory system.

How Will I Know if I Need My Air Ducts Cleaned?

Air ducts should to be cleaned on a regular basis to help reduce pollutants in the air and improve indoor air quality. Look out for these signs:

  • Visible mold growth
  • Odors or allergic reactions
  • Dust and debris coming out of the register
  • An unusual amount of dust on furniture and surfaces

To schedule your appointment to get your air ducts cleaned, give Envirotech Clean Air Inc. today at (800) 698-1300.

Why Clean Air Ducts?

Air Duct CleaningAir ducts in your home allow the heat and cool air from your homes HVAC system to circulate throughout the various spaces in your home to maintain consistent temperatures throughout each room. Air will run through these ducts numerous times throughout a given day and the air that is pushed into each room is the air your family will be breathing in. Accumulation of dust and debris in air ducts in normal throughout a home, but when there are various other factors that can increase this build up, increasing the need for regular air duct cleanings.

What is Air Duct Cleaning?

Air duct cleaning refers to the cleaning of the various components of a forced air system, including the supply and return air ducts and registers, grilles and diffusers, heat exchangers and cooling coils, drain pumps, fan motor and housing, and the handling unit housing.

Overtime these components may become contaminated with dust, debris, and pollen and if moisture is present, mold can grow within the ducts and can be released into the air in your home. Some contaminants can cause allergic reactions or other symptoms if exposed to them, making it even more important to ensure your service provider is cleaning your air ducts correctly.

Factors that Increase the Need for Regular Maintenance

  • Pets
  • Occupants with allergies and/or asthma
  • Water contamination or damage
  • Renovation or remodeling projects
  • Cigarette and cigar smoke within the home

Benefits of Air Duct Cleaning

Dirty air ducts should always be cleaned by a reputable HVAC professional to see the most benefit from your investment.

Indoor Air Quality

Air ducts see normal accumulation of contaminants over the years as a home is occupied and these contaminants may filter through a duct system several times per day, pushing them into the air we breathe and causing buildup within the duct itself. Cleaning your air ducts can reduce the number of harmful contaminants breathed in and promote healthier living.

Energy Savings

When contaminants build up in the air ducts, it may causes your heating and cooling system to work hardener and can even reduce the lifespan of your system. When you keep your system and air ducts clean, less energy is used which in turn saves you money.

What to Expect from your Air Duct Cleaning Provider

After making the decision to hire an HVAC professional to clean your system, you should expect them to:

  • Open all access ports and ducts for the entire system and ducts to be properly cleaned
  • Inspect the system prior to cleaning to ensure there are no Asbestos-containing materials within the system
  • Use of high-efficiency particle air (HEPA) vacuum equipment to clean inside the home
  • Protection of carpet and furniture during the cleaning process
  • Brushing and agitation of interior duct surfaces to dislodge particles in addition to vacuuming
  • Sealing and re-insulating any access points used to ensure they are airtight
  • Use of soft-bristled brushes on ductwork that contains or is made up of fiberglass
  • Follow NADCA’s standards for air duct cleaning

To make your air duct cleaning appointment with Envirotech Clean Air, Inc, call us today at (800) 698-1300.

NADCA Commercial Rebate Program


The National Air Duct Cleaners Association (NADCA) recently began field trials to measure HVAC kilowatt usage before and after air duct cleaning services. Since these field trials began, an average of 40% improve in cooling at the cooling col and a 54% improvement in airflow in cubic feet per minute or CFM on the commercial systems and a 61% average improvement in cooling and an 11% improvement in CFM for residential systems was found.Commercial HVAC

Would you like to share your data with us? If you have a kilowatt monitor in place to measure electricity usage on your HVAC system, we are offering a $250 rebate through NADCA for each commercial HVAC system cleaned.

If you don’t have a system that needs to be cleaned but have had yours cleaned within the last year and have energy monitors tracking kilowatt usage or having an upcoming cleaning project scheduled that we can measure, you may still qualify for a rebate!

To get started, please contact Envirotech Clean Air today at (800) 698-1300.

Envirotech Clean Air Employees Receive Continuous Training

Duct CleaningContinuously training our employees is important to our management team at Envirotech, so we stay up to date with the latest education, methods, and equipment. This helps us maintain our position as industry leaders and experts in the many diverse disciplines encompassed by the Indoor Environmental Quality industry.

In the past three months, we have had one of the leaders on our experienced team become certified as a Certified Mold Remediation Supervisor (CMRS). We ensure your mold removal, remediation, and air duct cleaning project will be handled by a trained professional and done correctly the first time.

Listed among the first members in Massachusetts to join the National Air Duct Cleaning Association (NADCA) in 1990, we maintain the most trained and NADCA certified air duct cleaners (ASCS) in New England. We recently sent three team members to attend the latest NADCA Fall Seminar in St. Louis to complete the hands on technical and educational training provided by the standard bearer of the air duct cleaning industry (NADCA).

In addition, we attended The Healthy Building Summit in Seven Springs, PA., one of the top Indoor Air Quality (IAQ) conference in the country. Here, the nation’s top indoor environmental quality leaders and experts spent three days presenting the latest information and research. Our team leaders are kept up to date and learn where the focus of our everchanging industry is headed. We are thrilled to put this new knowledge to good use and help improve your air duct cleaning and mold remediation experience.

For all of your air duct cleaning and mold remediation needs, call our experienced team at (800) 698-1300.

Signs You Need Your Air Ducts Cleaned

We are often asked how do I know if or how often my ducts need to be cleaned.  The answers depend on a variety of issues, and here is a guide to some of them.  One rule of thumb for cleaning residential HVAC and air duct systems is every 5 years.  Many home owners have never cleaned their ducts and probably should, if only for the peace of mind knowing that the air ducts that ventilate your home are clean.  There may be other factors and things you’ll notice to help make this decision.

Having your air ducts cleaned should be done regularly to keep your ducts free of dust, debris, mold, and allergens. By keeping your air ducts clear of these, you may improve the indoor air quality in your home. There may be a few ways to notice if it’s time to get your air ducts cleaned.

Air Duct Vent


If you notice odors or have an allergic reaction when your heat or AC are turned on, you may want to have the ducts cleaned.  Air ducts carry cold and warm air throughout a home and when there is a buildup of anything that you react to, such as dust, mold and debris, the air that is pushing through these vents may also pushing this mold and debris into the air that your family breaths.

Unexplained indoor allergies may be a sign of a mold issue. If you have unexplained allergies when you’re inside, but your symptoms go away in other areas or outside, it may be wise to have your home checked for mold and have your ducts cleaned.


Mold and mildew may cause adverse health reactions as well as other structural problems within the home. If you see visible mold growth in your home, it’s important to call a professional immediately to investigate and remediate the mold.


If there is dust debris or mold around your vent openings, it may be wise to clean the ventilation system. Call a professional and set a time for a cleaning. Remember, whatever is blowing out of your events into the air is being breathed in by yourself and your family and friends.

If you are experiencing any allergy symptoms in certain areas of your home or notice any of these telltale signs of needing your air ducts cleaned, call Envirotech today at (800) 698-1300.

The NADCA ACR 2013 is the industry standard for Assessment, Cleaning and Restoration oh HVAC mechanical systems.  It contains the standard procedures for cleaning and assessment.  Page 6 is titled “DETERMINING THE NEED FOR HVAC CLEANING AND RESTORATION”.  This applies to both commercial and residential settings.  For a free copy of the NADCA ACR 2013, call Envirotech and we will provide you with one.

What You Need to Know About Air Duct Cleaning

Air Duct Cleaning

Your HVAC system and duct work are very important because they controls the flow of air through your home. It’s like the heart and lungs of your building.  According to The National Air Duct Cleaners Association (NADCA), an average of 40 pounds of dust, debris, and allergens build up in the air ducts of a 6-room residential house each year. This dust may be made up of unhealthy bacteria, dust and mold that may contribute to contamination in the air when your system in on.

Improved Air Quality

The build-up of dust in your air ducts may prevent air from efficiently flowing through the ventilation system and contaminants may also being released into the air. By keeping your ducts clean and free of debris, you can improving the air quality in your home and reduce the costs of having your system run.

When to Have Your Air Ducts Cleaned

The conditions in homes may vary from one to another, therefore it is impossible to tell when each individual home should have their air ducts cleaned. You should consider having our air ducts cleaned if:

  • The system is contaminated with an accumulation of particulate or particulate is visible inside of the vents and within the duct itself
  • Airflow is being restricted or compromised, especially at the cooling coil
  • You feel or know that dust, debris, odors or contaminants are being emitted into the air
  • After a renovation project or after a flood or fire event
  • Under special health considerations
  • When advised by an mold or home inspector or for peace of mind

What to Expect from the Professionals

When you a hire a professional air duct cleaner, you should expect them to follow specifics steps to ensure your ducts are cleaned properly. They should be certified by the National Air Duct Cleaners Association and follow the ACR 2013 Standard for Air Duct Cleaning.  Before starting the cleaning process, the professional will inspect the ducts and system as well as protect your flooring and furnishings. The professional will use HEPA filtered vacuums and other specialized equipment like brushes and compressors the go through ducts. Access panels should be re-sealed and re-insulating anyplace access doors are installed to ensure they are airtight.

Are you in need of having your air ducts cleaned? Envirotech Clean Air has more NADCA certified technicians than any other air duct cleaning company in New England. Call us today at (781) 279-2900 to set up your appointment.

Dan Greenblatt becomes Vice President of the Indoor Air Quality Association (IAQA).

On March 15, 2015, at IAQA’s annual convention in Grapevine, TX, Envirotech’s president, Daniel Greenblatt, was elected Vice President of the Indoor Air Quality Association.  Dan is serving his sixth year on IAQA’s Board of Directors and is also the Chair of the membership committee.  Dan expressed great excitement, about “the consolidation with ASHRAE” , the world’s largest and most influential association of ventilation, heating and refrigeration engineers, and their reach to 54,000 members and 170 chapters in over 100 countries. Also, Dan will work with opportunities to increase IAQA’s efforts and reach in investigating and solving indoor air quality issues.   “Education, chapters, IAQ Standards and membership promotion are the areas that I will work with IAQA on over the coming year of my term as Vice President”.

Envirotech Clean Air, Inc. was established in 1988 from a desire to provide clean, safe indoor air for all people. Envirotech began as an HVAC Cleaning and Restoration company, better known as air duct cleaning, and was among the first members of the National Air Duct Cleaners Association (NADCA).

Today, Envirotech Clean Air, Inc. is one of the largest mold removal, specialty cleaning and HVAC Cleaning and restoration services in the Northeast. Envirotech Clean Air provides an array of clean air services.



ENVIROTECH Specializes in Sensitive Homeowners Mold Remediation



Envirotech specializes in cleaning home owner’s contents and family living areas for clients who are sensitive to chemicals or cannot tolerate moldy items or surfaces.

We work with indoor environmental consultants and developed a strategy for every project. “Every client is different”, saidVice President Steven Goselin, “we employ customized strategies that work for the individual homeowner or client.”

Residential Mold Remediation for living areas and contents


The Typical Problem: Homeowners that are very sensitive to mold and chemicals have an Indoor Environmental Consultant find elevated levels of mold or contamination. They work with the consultant to diagnose and repair the source, and then write a very specific plan for remediation that takes all of their sensitivities, circumstances and needs into account.

The Remediation: Envirotech Clean Air’s project consultants and supervisors work with the homeowner and Indoor Air Professional to plan and execute the site specific remediation. Trained professional technicians and supervisors contain contaminated areas with engineering controls and contaminated porous building materials are removed. All surfaces in the work are cleaned of mold using HEPA filtered vacuums and any designated products. Contents are handled and cleaned according to the scope of work written by the consultant and agreed to by the homeowner and Envirotech. If any new areas of concern are discovered, the homeowner and consultant are contacted. When the project is complete, a post remediation verification should be performed by the environmental consultant. Envirotech pays special attention to sensitive homeowners needs.

The Coordination: Consultants, homeowners and Envirotech work together with any other trades involved to have the stressfulness of work being completed successfully go as smoothly as possible for everyone involved, especially the homeowner.

For information about Envirotech Clean Air’s individual and specialized remediation team, call Steven Goselin or Ron Fallon and the Envirotech team at 781-279-2900.