Recent Outbreak of Legionnaires Disease Underscores Role Duct Leakage Plays In Transmitting Airborne Contaminants

Aspen Note: A similar outbreak of Legionnaires Disease at a hotel in southern New Hampshire this summer prompted us to share the following article with our customers, prospects, and friends in an effort to make them aware of the importance of good air quality.

Recent Outbreak of Legionnaires Disease Underscores Role Duct Leakage Plays In Transmitting Airborne Contaminants

Aeroseal joins CDC, American Lung Association and Others Recommending Effective Duct Sealing To Combat Health Risks Associated With Poor Indoor Air Quality

A recent outbreak of Legionnaires disease in New York City has contributed to an increased interest among property owners and facility managers in the role that duct leakage plays in the spread of the disease. According to Neal Walsh, senior vice president of Aeroseal LLC, a duct sealing technology company, HVAC businesses throughout the East Coast and elsewhere have experienced a notable increase in customer inquires related to the Legionnaires outbreak and indoor air quality in general.

Duct Sealing from the inside: an innovation in duct sealing technology. The recent Legionnaires outbreak has sparked increased demand for Aeroseal duct sealing services.

We have heard from a number of our East Coast dealers that are responding to an uptick in calls from commercial clients that are concerned about the recent epidemic,” said Walsh. “They are learning that the microbes responsible for Legionnaires disease are typically spread through a contaminated indoor air environment, and that has led them directly to concerns about duct leakage.”

According to the Center for Disease Control (CDC), the EPA and others, duct leakage can be a major contributor to health risks associated with poor indoor air quality. Leaks in the ductwork allow contaminants to enter the duct system at one location within a structure and then spread throughout the rest of the building.

Experts believe that Legionella Pneumophila, the bacteria that causes Legionnaires disease, is typically spread through a building’s ventilation system. In the recent New York City epidemic, the outbreak has been traced to contaminated cooling towers*, which release water mist. It is likely that the contaminated water mist spread throughout the atmosphere with the assistance of leaky ventilation systems, and then was inhaled by occupants.

It’s estimated that poor indoor air quality costs businesses as much as $100 billion a year in lost productivity, health costs and other related problems,” said Walsh. “Poor indoor air quality can cause everything from headaches, coughing and skin irritation to more serious health concerns such as what we’re seeing in New York.”

Since it first appeared in late July, more than 100 people have been diagnosed with Legionnaires Disease. While this disorder is easily diagnosed and can be treated with antibiotics, 10 people have died due to this latest outbreak.

To help minimize health risks associated with poor indoor air quality, many health organizations including the CDC, the EPA and the American Lung Association, recommend sealing ductwork. While some leaks can be addressed using traditional duct sealing methods, studies show that the most efficient and cost-effective means of sealing ductwork is with the use of aerosol-based duct sealing technology.

We are working hard to educate the public about the problems associated with poor indoor air quality and the role that duct leaks play in exacerbating the problem,” said Walsh. “The recent Legionnaires outbreak is a reminder of how easily airborne diseases can spread and put us all at risk.”

Source: Aeroseal

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI), and is an approved Aeroseal dealer.

Call 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.


6 Simple Tips to Prepare Your Home for Fall

We may still be taking a dip in the pool, but soon we will be pulling out sweaters and cozying up on the couch to watch football. The best time to start preparing your home for the fall season is now before you turn on your heat.

Taking the following steps to prepare ahead of the colder seasons can save you from costly repairs down the road.

1. Change filters

Filters should ideally be replaced at the change of each season. A clean filter will help you heat and cool your home more efficiently than a dirty filter. Because filters trap harmful particles from being circulated in your home by forcing air through a fine mesh, a dirty filter will hinder the unit from doing its job. 

2. Check for leaks

Prevent drafts and decrease energy waste by sealing windows and doors. Don’t forget to check your ductwork for leaks as well.

3. Start warming up your unit

Similar to cars that need time to get warmed up when it’s cold outside, your HVAC system needs time to adjust to heating and may take some time to get back to its proper speed and efficiency because it sat unused for such a long time. On cooler nights or days turn your system on a low heat setting.

4. Check alarms and detectors

Smoke and carbon monoxide detectors are essential devices that keep you safe. Replace batteries with new ones and push the test button on each device to make sure they are working properly. Also, keep in mind, The U.S. Fire Administration recommends that you replace your smoke detectors every 10 years.

5. Clean up your outdoor unit

If you have an outdoor unit, check for debris and damage. Remove all debris to ensure proper airflow and prevent dirt or leaves from getting inside the unit and on the coils. If you see any signs of damage, give your HVAC contractor a call.

6. Schedule an air duct checkup

The best way to prepare your home for fall is to schedule a maintenance checkup with your local NADCA certified contractor. Having your system cleaned regularly will improve indoor air quality, extend the life of your system and increase the energy efficiency of your home because a clean unit doesn’t have to work as hard to maintain the temperature you desire.

Source: National Air Duct Cleaners Association (NADCA)

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI), and is an approved Aeroseal dealer.

Call 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.

Fall Is Air Duct Cleaning Season


If giving a warm welcome to cooler weather and festive times with family and friends means turning up the heat in your house, there’s something you should know: You may need to clean your home’s air ducts. Air ducts and ventilation systems can get stuffed with dust, pet hair and other contaminants that get blown through your house when you kick on the furnace for the first time in the fall. Whether you notice a burning smell when the heat turns on or experience an increase in allergy symptoms, dirty air ducts may be to blame.

The debris that builds up in your home’s air ducts throughout the year can foster mold and bacteria growth, and even invite vermin into your home. Homes exposed to extreme weather conditions (like this year’s record-breaking hurricanes or the heat and ash from wildfires) are particularly at risk of developing hazardous mold and bacteria. However, extreme weather isn’t the only thing that can dirty your ductwork. Even homes in regions that are going through the normal seasonal changes see a build-up of allergen-producing spring pollen or mold caused by a humid summer. Daily living with pets and people coming in and out of a home can introduce pet hair and dirt into your home’s air ducts, causing allergic reactions when air starts flowing through the ducts and blowing the dirt through the home.

And now, with flu season on the horizon, it’s especially important to ensure the air in your home is free of common irritants that can worsen symptoms or even cause illnesses. Older people, young children and anyone with asthma or other respiratory diseases are all especially susceptible to illnesses caused by impurities in the air.

The good news is that having the ducts cleaned can save you money on energy costs in the long term. Research by the EPA has demonstrated that air duct cleaning and removing debris from your home’s heating and air conditioning system can improve efficiency and the overall quality of indoor air. And, if your health wasn’t reason enough to get your air ducts cleaned this fall, clean, efficient HVAC systems are less likely to break down and will have a longer lifespan and generally operate more effectively, saving you money and the hassle of dealing with a broken-down heating and air conditioning system.

Source: National Air Duct Cleaners Association (NADCA)

Aspen Air Duct Cleaning is licensed and ensured, a member of the National Air Duct Cleaners Association (NADCA) and the National Organization of Remediators and Mold Inspectors (NORMI), and is an approved Aeroseal dealer.

Call 1-800-931-6653 or email info@aspenenvironmentalservices.com, for an Air Duct System Inspection and to learn more about how sealing air duct leaks can improve indoor air quality and reduce energy costs.