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Have you ever wondered what might be floating in the air inside your home? Most indoor pollutants are invisible and odorless, but just because you can’t see or smell them doesn’t mean they’re not there. Contaminants like mold spores, bacteria, volatile organic compounds (VOCs), and harmful gases can be found in many homes and businesses across Connecticut.
Because these pollutants are difficult to detect, they often go unnoticed as they build up indoors. Over time, poor indoor air quality in Connecticut homes can contribute to allergies and asthma, headaches, fatigue, and respiratory irritation.
Testing your home’s air, improving ventilation, and installing a whole-house air purifier can work together to create a healthier indoor environment. Maple Air’s Pür Plasma™, a true plasma air purifier installed directly within your HVAC system, works continuously to neutralize harmful contaminants and pollutants throughout your home.
Each region of the country faces its own unique indoor air quality challenges, and Connecticut is no different. The Constitution State’s climate brings long, cold winters with the heat running for months, which can limit ventilation and trap pollutants inside. Humid summers, especially in shoreline communities like Stamford, Norwalk, and New Haven, bring heavy, damp air that can linger indoors and create ideal conditions for moisture and mold to take hold.
Connecticut is also home to many older colonial-era and mid-century houses built before modern ventilation standards. Stone foundations, aging HVAC systems, and unfinished basements can allow excess moisture and airborne contaminants to build up.
Poor indoor air quality affects more than just health, though allergies, asthma, and respiratory irritation are common. It also impacts comfort, energy efficiency, and the long-term condition of your home. Cleaner indoor air helps create a healthier, more comfortable living environment while protecting your home for years to come.
Radon is one of the biggest air quality concerns in Connecticut because it’s invisible, odorless, and can build up inside homes without any obvious warning signs. Radon is a naturally occurring radioactive gas that comes from the soil and can seep in through cracks in basement floors, stone or concrete foundations, and other openings, reaching levels that can put your family’s health at risk.
Radon is the second leading cause of lung cancer in the United States and is responsible for about 21,000 lung cancer deaths every year. Without testing, there’s no way to know if the air in your home is putting you or your family at risk.
Connecticut faces a significant radon risk, with elevated levels possible in every county. Fairfield, Middlesex, New Haven, and New London are classified as Zone 1, meaning they have the highest potential for indoor radon above the U.S. Environmental Protection Agency’s action level of 4 pCi/L, but radon can appear anywhere, so the EPA recommends testing every home. About one in four homes tested in the state meets or exceeds that level, according to the American Lung Association’s latest State of Lung Cancer report.
Mold is another common indoor health concern in Connecticut. It often thrives where moisture is present. Basements, old roofs, leaky plumbing, and condensation on windows can all create damp conditions for mold to grow. Poor bathroom ventilation only adds to the problem by allowing spores to spread quietly through the air.
Homes along the Connecticut shoreline face high humidity levels in the summer, while inland houses often struggle with basement moisture. Older homes in cities such as Bridgeport, Hartford, and New Haven may hide mold inside wall cavities, making it easy to overlook until it affects indoor air quality. Exposure to mold can trigger a range of health issues, including allergies, asthma, and sinus irritation. Even if the mold isn’t visible, spores in the air can affect anyone inside.
Volatile organic compounds, or VOCs, are chemicals released into the air from everyday household products like paints, finishes, cleaning supplies, flooring, cabinetry, and even new furniture. VOCs are often more noticeable in Connecticut homes during the winter, when closed windows limit fresh air. Renovations in older houses can add to the problem, as new materials release chemicals into the air.
Breathing in higher levels of VOCs can lead to headaches, dizziness, and scratchy eyes or throat, especially in homes with limited ventilation or air purification.
Many homes in Connecticut rely on gas stoves, oil-fired boilers, gas furnaces, wood stoves, and fireplaces for months at a time. These systems produce combustion byproducts like carbon monoxide, a colorless, odorless gas that can be harmful even at low levels.
Allergens are a year-round concern in Connecticut homes. Dust, pet dander, and pollen can build up indoors, especially when windows are closed in winter. Seasonal changes make things worse. Pollen shows up in spring, allergens accumulate in winter, and mold spores rise in fall, all of which can trigger allergies or asthma.
Ozone can also affect air quality in Connecticut, especially from May through September when hot, sunny days help it form from generators and other fuel-burning equipment. High ozone levels can make breathing harder, particularly for kids, older adults, and anyone with asthma. Outdoor ozone can enter your home through windows or vents, so keeping an eye on local air quality helps protect your family.
Fairfield County, home to Bridgeport, CT, consistently ranks among the worst in New England for ozone pollution, largely due to traffic, industrial emissions, and a higher population. This contributes to some of the highest rates of asthma and other respiratory illnesses in the region.
Poor indoor air can affect your health and comfort, often without obvious signs, so it helps to know what to watch for. They include:
Small changes around the home can make a big difference in air quality and help your family breathe easier.
The first step is knowing what’s in your home. In Connecticut, common contaminants like radon, mold, VOCs, ozone, and allergens vary based on your home’s age, heating system, and location. Paying attention to signs like lingering allergies, musty odors, or unexplained fatigue can help you determine if professional testing is needed.
Open windows on mild days, run kitchen and bathroom fans, and set your HVAC system to fan mode so it continuously circulates air throughout your home. Keeping vents clear can also help reduce indoor pollutants.
Connecticut homes, especially older ones and those with basements, are prone to dampness which can cause mold. Using dehumidifiers and a whole-home air purifier, fixing leaks quickly, and managing condensation on windows and walls helps prevent mold before it becomes a problem.
Change HVAC filters on schedule, vacuum with a HEPA-equipped cleaner, and check appliances like stoves, boilers, and water heaters to make sure they aren’t adding to indoor pollutants.
Advanced air purification can make a real difference in the fight against poor air quality in Connecticut, but not all systems are created equal. Traditional options like HEPA filters capture larger particles, but often miss viruses, bacteria, mold, radon, and chemical pollutants that modern plasma systems can treat.
Maple Air Pür Plasma™ uses advanced plasma technology to create oxidized molecules that break down common indoor contaminants in Connecticut homes at the molecular level. It continuously treats the air and disinfects surfaces even in hard-to-reach areas.
Maple Air neutralizes contaminants 15 times more effectively than ordinary air purifiers, and reduces airborne biological burden by an average of 93% across thousands of samples. It’s ozone-free, completely safe for everyone, and protects your whole home with a simple installation into your existing HVAC system.
Indoor air contaminants are common in Connecticut homes, and risks can vary by region, your home’s age, and season. The best approach is to be aware of potential issues, control moisture, improve ventilation, and consider targeted air purification like Maple Air. These steps help your family breathe easier, stay comfortable, and protect your home.
To learn more about Maple Air Pür Plasma™, email us at info@getmapleair.com.
Healthier air in
Indian Trail, NC
with Maple Air
1500 sq ft home
Air Bioburden
(microbe units per cubic meter of air)
Industry standard:
>300 = poor air quality,
<100 = healthy air quality
Lab: Scientific Air Solutions in Turlock, CA
Healthier air in
Marvin, NC
with Maple Air
4000 sq ft home
Air Bioburden
(microbe units per cubic meter of air)
Industry standard:
>300 = poor air quality,
<100 = healthy air quality
Lab: Scientific Air Solutions in Turlock, CA
Healthier air in
Matthews, NC
with Maple Air
5000 sq ft home
Air Bioburden
(microbe units per cubic meter of air)
Industry standard:
>300 = poor air quality,
<100 = healthy air quality
Lab: Scientific Air Solutions in Turlock, CA
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Surfaces improvement
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