what is the delta variant

Wellness |

Fact vs. Fiction: Breaking Down the Delta Variant

3 minute read

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The 7-day average of COVID-19 infections declined to around 10,600 in early July, leading many to believe the United States was on the homestretch of defeating the pandemic. But since that time, the emergence of the Delta variant has caused infections to rapidly increase.

The 7-day average in early August is around 80,000, representing a 148% rise in new coronavirus infections.

An internal document from the Centers for Disease Control & Prevention (CDC) was recently made public by The New York Times, and it contains important details about the Delta variant.

Here is what we know as of early August 2021.


Part of the reason the original strain of COVID-19 (Alpha strain) was considered so dangerous is that it is easily transmissible from person to person.

With the new Delta variant, the CDC found that it’s even more contagious than the Alpha strain and it appears to be responsible for most new infections. In fact, the CDC recently found that more than 80% of new cases in the U.S. were caused by the Delta variant.

The CDC’s report compared the level of contagiousness to chickenpox, a disease that used to be very common in the United States. Thanks to the chickenpox vaccine, more than 3.5 million cases of chickenpox, 9,000 hospitalizations, and 100 deaths are prevented in the U.S. each year.

Delta Symptoms

The symptoms associated with the Delta variant appear to be the same as with the original Alpha strain. These include: fever or chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, and new loss of taste or smell, among others.

But more importantly, research found that the Delta variant grows more rapidly and to higher levels in the respiratory tract, making severe symptoms more likely for unvaccinated people. While vaccinated people will likely be asymptomatic or have very mild symptoms from the Delta variant, it is also possible for them to spread the disease.

Vaccination Rates

The CDC has consistently said that widespread vaccinations are the key to ending the pandemic. As of early August, about 67% of the U.S. population aged 12 and older had at least one dose of a vaccine. These rates vary significantly between states, with the highest being Vermont at nearly 87%, and the lowest being Mississippi at 50%.

With the Delta variant spreading rapidly, more people are choosing to be vaccinated. For example, in Mississippi, the 7-day average of people receiving a first dose was 5,203 on July 27th, more than triple the average from July 1st.

Breakthrough Infections

The term “breakthrough infection” indicates the rare occurrence of a vaccinated person becoming infected with the Delta variant. At present, approximately 0.04% of vaccinated people tested positive for COVID-19.

When a vaccinated person tests positive, most either have no symptoms or have very mild symptoms. Their symptoms are more like those of a common cold, such as cough, fever, headache, and the addition of significant loss of smell.

It’s important to note that the vaccines are highly effective in preventing serious illness, hospitalization, and death.


With the Delta variant surging, the CDC’s data suggest that all people with weak immune systems should wear masks. They recommend the same for vaccinated Americans who are in contact with young children, older adults, or otherwise vulnerable people.

The CDC recommends that masks be worn indoors in areas where virus transmission is high, even for those who are fully vaccinated.

Some businesses have returned to mask recommendations for indoor settings, and a few states have reinstated mask mandates.


Despite the surge in new infections, widespread lockdowns are unlikely according to Dr. Anthony Fauci, the nation’s leading infectious disease expert.

Dr. Fauci says the large numbers of vaccinated people can help prevent the level of hospitalizations we saw last winter. He also cites continued vaccinations as essential for preventing further infections, variants, and lockdowns.


For information on how mechanical ventilation impacts the spread of COVID-19, check out this recent article on the AprilAire blog.

Wellness |

Healthy New Year’s Resolutions—Focus on a Healthy Home

2 minute read


How will 2023 look different from 2022?

It’s time to reflect back on the year that was and to make plans for the year to come. As you put together your list of New Year’s resolutions, AprilAire has a few simple ideas for improving something you’ll experience every day: the health and comfort of your home environment.

Healthy Home Checklist

  • Declutter

This one is good for your mental and physical health. Removing excess items and tidying up can help relieve stress, especially in areas meant to be relaxing, like the living room or bedroom.

Clutter also collects dust and pet dander, and can lead to mold growth if moisture becomes trapped. Clearing out anything unneeded makes cleaning easier and helps you maintain a Healthy Home.

  • Test for Radon

Not every mess around the house can be seen or smelled. Radon is a colorless, odorless gas that can seep into your home through cracks or gaps in your foundation. Extended exposure can cause lung cancer, and it’s important to address any issues as soon as possible. Learn more about at-home radon testing kits from AprilAire Pros and find solutions in our online store.

  • Change Air Filters

Air filters help keep your HVAC system running efficiently, while removing contaminants from the air you breathe. We recommend changing out AprilAire air filters every 6–12 months, compared to 1–3 months for traditional filters.

  • Switch Fan Direction

Ceiling fans are a great way to circulate air, keeping you cooler in the summer and warmer in the winter. But they need to be spinning in the right direction to do so. If you haven’t already, make sure your fans are going clockwise during the winter. This creates an updraft, circulating warm air throughout each room.

  • Plan for Emergencies

Have a plan in case of extreme weather events or other emergencies. If you created one in years past, do a quick refresher to make sure it still makes sense. And restock any supplies that may be running low.

  • Swap Batteries

Smoke detectors and carbon monoxide alarms are key aspects of maintaining a safe home. Swap out the batteries annually and use the testing function to make sure they’re operating properly in every room of the house.

Family | Wellness |

A Gift They’ll Use Every Day – Healthy Air

2 minute read


It’s the season of giving, a time to find something your friends and family will cherish and enjoy. For anyone focused on health and wellness this year, AprilAire has some gift ideas that any homeowner will love.

AprilAire Gift Guide 2022

Air Purifiers

A Healthy Home is something we all want for our loved ones. The average person spends 90% of their time indoors, where the air can be up to 5x more polluted than outdoor air. Those two facts lead to one simple conclusion: it’s so important to clean the air inside our homes.

AprilAire whole-house air purifiers capture and remove harmful substances from indoor air, like mold, pollen, airborne viruses, pet dander, and even odors.

For anyone who needs a single-room solution, check out the AprilAire room air purifier, with a true HEPA 4-stage filtration system.

Fresh Air Ventilation

Another key aspect of enjoying Healthy Air at home is to flush out stale air, and bring in fresh air from outdoors. AprilAire whole-house ventilation does just that, bringing in outdoor air to dilute indoor pollution, and removing humid, polluted air that gets trapped indoors.

For the home chef in your life, you could also upgrade the exhaust hood in their kitchen. Cooking is a major source of indoor air pollution, and old exhaust systems are noisy and inefficient, with clogged filters wearing out the fans quickly.

Humidity Control

We don’t always think about humidity levels in our homes, but they play an important role in the health, comfort, and energy efficiency of a space.

AprilAire humidity control gives homeowners the ability to create balanced humidity year-round, with benefits like cost savings, fewer static shocks, and more protection from illness. AprilAire whole-house humidifiers and dehumidifiers can deliver balanced humidity to every area of your home.

Air Filters

As part of a home’s ventilation and purification systems, filters play a critical role in protecting Indoor Air Quality. AprilAire recommends changing our air filters every 6–12 months. Gifting a new filter for the holidays is a great annual gift that will start them off with Healthy Air in the new year.

Here’s a helpful guide for picking the right air filter based on the needs of the homeowner and their family:


Test for Radon

Feeling safe at home is a necessity for everyone. Not so obvious as locking the doors and turning off kitchen appliances is checking for the presence of radon. Because radon is colorless and odorless, it’s impossible to detect without an in-home testing kit.

Elevated radon levels can impact any area of the country, and the potential effects of radon exposure make it an easy decision to test for its presence in your home and your loved ones’ homes.

Interview with the American Lung Association

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Breathing Healthy Air: Interview with the American Lung Association

4 minute read

At AprilAire, we encourage breathing Healthy Air because we know it benefits your overall health. The American Lung Association knows it too. That’s why AprilAire air filters are the National Proud Partner of the American Lung Association*, playing a key role in the fight to improve lung health and prevent lung disease.

We got to interview National Senior Vice President of Development Sally Draper about the importance of Healthy Air and how both AprilAire and the American Lung Association are working together to help you Breathe the Fullness of Life.

Could you introduce yourself for the readers and tell us about why you chose a career with the American Lung Association?

“I joined the Lung Association in 2014 because I was attracted to its comprehensive mission—to save lives by improving lung health and preventing lung disease. Every day we help Americans breathe easier through our efforts to fund innovative research, advocate for policies that protect our lungs, and educate patients, caregivers, providers, and the public with science-backed information. We were founded more than 115 years ago, and the needs are greater today than ever before, including the youth vaping epidemic, climate change, and COVID-19!”

Can you tell us about the American Lung Association’s mission?

“The American Lung Association is the leading organization working to save lives by improving lung health and preventing lung disease. Our work is focused on four strategic imperatives: to defeat lung cancer; champion clean air for all; improve the quality of life for those with lung disease and their families; and create a tobacco-free future. Whether it’s searching for cures to lung diseases, keeping kids off tobacco, or advocating for laws that protect the air we breathe, the work of the American Lung Association helps to save lives every day.”

How did AprilAire and the American Lung Association come to work together in the first place? What does that relationship look like presently?

“AprilAire and the American Lung Association forged a new relationship in 2018. We quickly realized how much we had in common. Our partnership was developed as we saw an opportunity to educate and help more consumers improve the air in their homes to create a healthier environment.

Since 2020, AprilAire has been a Proud Partner of the Lung Association with its 4” residential air filters. Additionally, AprilAire joined the Lung Association as our FY20 National Fight For Air Climb Partner For Healthy Air. The company has also supported the Lung Association’s “Stand Up For Clean Air” campaign. As part of this initiative, we are driving conversations around air quality, climate, and health. The Lung Association invited people to share their #MyCleanAirStory—knowing that when people realize climate and air quality are impacting the health of their neighbors, friends, and loved ones—they are more willing to act. AprilAire provided prizes for the #MyCleanAirStory contest, including one grand prize of a whole-home Indoor Air Quality upgrade (the AprilAire Healthy Air System®) and nine AprilAire Room Air Purifiers. This year, the company stepped up once again to sponsor the Wisconsin Fight For Air Climb in Milwaukee. Also in 2021, the Lung Association welcomed Dale Philippi, President and CEO of Research Products Corporation, AprilAire’s parent company, to the Lung Association’s Wisconsin Leadership Board of Directors.”

Tell us about the Fight For Air Climb.

“The American Lung Association’s Fight For Air Climb is the nation’s premier stair climbing challenge. At 38 events nationwide, children and adults of all ages participate in this celebratory stair-climbing adventure. Pre-pandemic, the Fight For Air Climb was held in several of our country’s most iconic skyscrapers. This year, the Lung Association invited participants outdoors for a one-of-a-kind adventure to support healthy lungs and clean air. In fact, Dale was among the company’s team of more than 50 employees that climbed the stairs at Milwaukee’s American Family Field on May 22nd, proving he puts his feet, time, and talent behind causes he supports.

AprilAire has been a stalwart partner in the Fight For Air Climb, promoting the event to employees, customers, trade partners, family, and friends. Through this unique vehicle, the company is engaging individuals of all ages to understand and celebrate the importance of Healthy Air.”

AprilAire’s air filters are a National Proud Partner of the American Lung Association. How do you feel our mission aligns with yours?

“Our CEO, Harold Wimmer, has said, ‘Breathing should not be an uphill battle, but for many it is… no one should have to fight for air on a daily basis.’ Similarly, Dale has declared, ‘We believe everyone deserves to breathe Healthy Air.’ As a National Proud Partner, AprilAire’s mission to enhance everyone’s health by improving the air in their homes aligns very closely with that of the American Lung Association, champion of clean air for all.”

What are the benefits of breathing Healthy Air and what are everyday things that people can do to Breathe the Fullness of Life?

“Clean air is essential for healthy lungs. The American Lung Association works to ensure that the air we breathe is clean and safe from harmful pollution. In fact, every year we publish our State of the Air Report, which looks at two of the most widespread and dangerous air pollutants, ozone and fine particulate matter. Our 2021 State of the Air Report found that more than 4 in 10 Americans—over 135 million people—are living in places with unhealthy levels of ozone or particle pollution.

One of the most important things you can do to Breathe the Fullness of Life is to keep sources of pollution out of your home. Check out these commonsense tips on Lung.org. Additionally, ventilation helps reduce indoor air pollution, but it works best if paired with keeping known sources of air pollution out of the building. For tips on how to use ventilation to protect your lung health, check out our section on Ventilation: How Buildings Breathe.”

Fight for Healthy Air

At AprilAire, we believe everyone deserves to Breathe the Fullness of Life, and we’re not the only ones that feel this way. Through our Proud Partnership with the American Lung Association, we aim to fill every home with Healthy Air. Both AprilAire and the Lung Association believe that breathing Healthy Air should be available to everyone, and maintaining healthy Indoor Air Quality is an important step for your lung health. Read more about our partnership and the efforts of the American Lung Association on their website.

*Disclaimer: The American Lung Association does not endorse any product, device, or service.

2021 Good Neighbor Values

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2021: AprilAire’s Good Neighbor Values

2 minute read

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We take the importance of caring for others to heart at AprilAire. We believe we have a purpose beyond the individual work we do and that being a successful company also means “Being a Good Neighbor.” It’s one of our core values, and something we put into action each year.

We remain committed to helping our local communities in a number of ways, including financial contributions and volunteering. In the past, we’ve raised funds to provide pack-n-plays to mothers in need, volunteered at local blood drives, and held various donation drives throughout the year.

While our partnership opportunities may look different in the wake of the COVID-19 pandemic, we’re excited to continue our work with the Society of St. Vincent de Paul, whose mission statement reads:

“A membership organization, the Society began working in Madison in 1925 with two parish-based groups of members serving their neighbors in need. Today, programs the Society operates in Dane County include a large customer-choice food pantry, a charitable pharmacy, storage for the goods of persons who are homeless, seven thrift stores offering direct charity, housing at Port St. Vincent de Paul and St. Elizabeth Ann Seton House, and several other forms of assistance for people struggling with poverty.”

We’ve been working with St. Vincent de Paul – Madison since 2014, giving us a number of incredible opportunities to give back and live out our mission of being Good Neighbors.

We believe the work they’re doing to provide assistance for our community is more important than ever right now, which is why it’s our honor to be a 2021 Platinum Sponsor for St. Vincent de Paul’s 6th Annual Care Café fundraising breakfast on May, 5th 2021. The theme is “Love Made Visible.”

They’re going virtual this year, which means they have unlimited capacity to reach their goal of $140,000. If you live in Dane County, we encourage you to attend the virtual event and support our neighbors in need through your contributions to the food pantry, free pharmacy, and housing programs.

 Click here for more information on St. Vincent de Paul – Madison to see how you can get involved.

Or find a charity in your area that you may be able to connect with to make an impact.

Healthy Air |

AprilAire Showcases at IBS 2023

3 minute read


Meet AprilAire at the International Builders’ Show 2023! We offer the most complete line of Indoor Air Quality solutions, providing proven performance and reliability as well as a localized, dedicated support team (including national distribution, nationwide sales force, and in-house technical and customer support) to meet builders’ needs.

From January 31st–February 2nd, tens of thousands of professionals in the building and construction industry will descend on Las Vegas for the International Builders’ Show (IBS), which will feature over 1,300 exhibitors and hundreds of educational sessions.

AprilAire is proud to be an exhibitor at this year’s show. We’ll be showcasing several innovative additions to the AprilAire Healthy Air System®, which is our all-in-one solution that provides fresh air ventilation, air filtration, humidity control, zoning control, radon mitigation, and more to address all aspects of Indoor Air Quality.

We’ll also have information on our established, nationwide network of distributors and our reliable in-house technical and customer support.

If you’re a professional in the residential or light commercial construction industry and are planning to attend IBS 2023, stop by and say hello to our knowledgeable team members at Booth C7908.

Below is a short preview of what AprilAire has in store, with much more to see in person. If you’re a homeowner and not attending the show but want to learn how you can improve the air in your home, read on below for the latest in Indoor Air Quality solutions from AprilAire.

AprilAire Ventilating Dehumidifier

AprilAire dehumidifiers balance your home’s humidity by reducing mold- and mildew-causing moisture, keeping you protected against the harmful effects of allergy and asthma symptoms, as well as airborne viruses.

The Ventilating Dehumidifier (Models E100V + 8190FF) brings in fresh air to meet ventilation needs while removing excess humidity from the incoming outdoor air. This solution combines our ENERGY STAR® Most Efficient 2022 dehumidifier with best-in-class ventilation. Fresh air is brought in whenever the HVAC system or dehumidifier is running to meet that need. If the required time is not met through these run cycles, the AprilAire Ventilating Dehumidifier will bring in fresh air and remove any excess humidity.

AprilAire Model 8145 and 8144NC Fresh Air Ventilators

AprilAire ventilation systems help create Healthy Air in the home by bringing in fresh air from the outside to dilute trapped airborne contaminants like allergens, chemicals, viruses, and bacteria. They also push out trapped, humid air to help improve indoor comfort and health.

Beyond the benefits to the health of your environment, these fresh air ventilators are also optimized for energy efficiency. Both units were awarded ENERGY STAR® Most Efficient 2022.

AprilAire Sensors and Monitoring

Knowing the performance of your Healthy Air solutions gives you confidence in the health of your home environment. AprilAire products have sensors for temperature, relative humidity, radon, and the operational health of your systems.

Our recent partnership with Airthings for radon detection is just one example of innovations in monitoring for homeowner peace of mind.

Plus, our wireless sensors easily pair with the new AprilAire S86 Series Wi-Fi Thermostat to improve installation time, whole-home comfort, and personal health.

AprilAire Zone Control

When you choose AprilAire zone control, you’re choosing Healthy Air throughout your home. Our zoning systems let you control the temperature in every area of your home, delivering optimal comfort and reduced energy usage. You can even manage these controls from outside your home using the AprilAire Healthy Air App on your mobile phone.

NEW AprilAire Next-Generation Thermostats

The AprilAire S86 Series Thermostats are our latest innovation. They launched in Q4 2022 and are easy to install with real language menus, basic and advanced HVAC installer settings, programmable and non-programmable options, and home automation capabilities.

AprilAire UVC Coil Cleaner

The new AprilAire UVC Coil Cleaner operates with a proprietary innovation using a sub-band of ultraviolet light. The AprilAire UVC product kills up to 99.9%* of mold on the surface of the coils of an air conditioning system, preventing the coil from becoming a source of bad air quality.

*Testing performed on Aspergillus niger mold spores in a sheet metal duct with a new bulb placed 18 inches from the surface.

AprilAire’s Partnership with the American Lung Association

AprilAire 4-inch Air Filters are a part of the American Lung Association’s National Proud Partner program*, which allows responsible brands, after careful internal and external vetting, to use the non-profit organization’s Proud Partner logo on product packaging and approved promotional materials. These 4-inch filters feature MERV 11, MERV 13, MERV 13CBN, and MERV 16 ratings and improved performance from the patented AprilAire Self-Seal Technology which minimizes the amount of air bypassing the filter.

Using AprilAire Air Filters allows homeowners to vacuum and dust less often because the filter catches airborne particles, like dust, pollen, mold spores, bacteria, and pet dander, and prevents them from settling on furniture and flooring.

*The American Lung Association does not endorse any product, device, or service.