What’s Really in the Air Inside Your Home?

Most indoor air quality issues aren’t dramatic. They’re gradual, invisible, and influenced by how modern homes are built and lived in.

The air inside your home is shaped by everyday activities — cooking, cleaning, heating, cooling, and simply living. Over time, small particles and compounds can accumulate, especially in tightly sealed, energy-efficient homes.

Understanding what’s present is the first step toward improving it.

Living room with large windows showcasing snow-covered trees outside, a beige sofa with cushions, a wooden coffee table with candles and plants, a rug, and white curtains.
Request a Free Indoor Air Assessment

We Spend Most of Our Lives Indoors

According to Health Canada, Canadians spend approximately 90% of their time indoors — at home, at work, or in other enclosed environments. That means indoor air quality often has a greater impact on long-term exposure than outdoor air.

Modern homes are built differently than they were decades ago:

  • Improved insulation

  • Sealed building envelopes

  • High-performance windows

  • Reduced natural air leakage

These changes increase energy efficiency and comfort. But they also change how air moves through a home.

Instead of naturally cycling out, air is often recirculated — allowing airborne particles and compounds to linger longer than many people realize.

What’s Commonly Found in Indoor Air

Indoor air is a mixture of many different substances. Most are byproducts of normal daily living.

🦠 Biological Particles

  • Dust mites

  • Pet dander

  • Mold spores

  • Bacteria

These microscopic particles can become airborne through movement, airflow, and everyday activity.

🧪 Chemical Compounds (VOCs)

Volatile Organic Compounds (VOCs) can be released from:

  • Furniture

  • Flooring

  • Paints & adhesives

  • Cleaning products

  • Synthetic materials

These compounds are often odorless and released slowly over time.

🔥 Combustion & Smoke

  • Cooking particles

  • Gas stove emissions

  • Tobacco smoke

  • Burning candles

Fine particulate matter generated during cooking and combustion can remain suspended in the air, particularly in homes with limited ventilation.

🌫 Outdoor Infiltration

Outdoor pollutants can also enter the home, including:

  • Pollen

  • Wildfire smoke

  • Urban particulate matter

Even well-sealed homes experienced some level of infiltration through ventilation systems and entry points.

How Energy-Efficient Homes Changed Airflow

Today’s homes are significantly more airtight than older construction. While this improves heating and cooling efficiency, it also reduces natural air exchange.

Air exchange refers to how frequently indoor air is replaced with fresh outdoor air.

In tightly sealed homes:

  • Air recirculates more than it refreshes

  • Particles remain suspended longer

  • Odors and moisture can linger

Mechanical ventilation systems such as HRVs (Heat Recovery Ventilators) and ERVs (Energy Recovery Ventilators) are designed to manage airflow intentionally — but not all homes are equipped with them.

The way air moves through a home directly affects how long airborne substances remain present.

Bright living room with a large L-shaped white sofa, light blue cushions, a round wooden coffee table with plants and decorative items, large windows showing greenery outside, and a bright, airy kitchen in the background with white cabinets and pendant lights.

Indoor Air Quality (IAQ)

According to the Environmental Protection Agency, the air inside our homes can be as much as 10 to 70 times more polluted than the air outside. After certain activities such as painting, the air can be up to 1,000 times worse

Logo of the United States Environmental Protection Agency with blue text and icon

How Indoor Air Can Affect Health

Air doesn’t simply pass through a space — it interacts with the people living inside it.

The average person breathes roughly 20,000 times per day. Over time, consistent exposure to airborne particles and compounds can influence:

  • Respiratory comfort

  • Allergy sensitivity

  • Sleep quality

  • Odor perception

  • Overall indoor comfort

For infants, older adults, and individuals with asthma or respiratory sensitivities, indoor air conditions may feel more noticeable.

Many indoor air concerns are subtle rather than dramatic — which is why they’re often overlooked.

When to Consider Improving Indoor Air Quality

You may want to evaluate your indoor air if you notice:

  • Persistent dust buildup

  • Lingering odors

  • Increased allergy symptoms indoors

  • Excess humidity or dryness

  • Recent renovations or new furniture

  • A new baby or infant in the home

  • Asthma or respiratory sensitivities

Indoor air quality isn’t about alarm — it’s about awareness and measured evaluation.

A woman lying on a couch and smiling while holding a young child close, who is leaning in and touching noses, in a cozy living room.

How Indoor Air Can Be Improved

Improving indoor air typically involves a combination of strategies rather than a single product.

Filtration

Upgrading furnace filters and understanding MERV vs HEPA ratings can improve particle capture within HVAC systems.

Source Control

Reducing unnecessary chemical exposure, managing moisture, and addressing localized issues can significantly improve indoor air conditions.

Ventilation

Introducing controlled fresh air through properly designed ventilation systems can help balance air exchange.

Humidity Control

Maintaining balanced indoor humidity can reduce mold risk and improve comfort.

At Platinum Air Care, we evaluate the entire indoor environment before recommending any solution. Every home is different, and air quality should be assessed — not guessed.

Book a Free Indoor Air Evaluation

  • Indoor air quality refers to the condition of the air inside a building, including the presence of particles, gases, humidity levels, and ventilation performance.

  • Most standard filters should be replaced every 1–3 months depending on home conditions, pets, and usage.

  • An air purifier or air cleaner is a type of appliance that is designed to remove, trap and purify airborne particulates and/or viruses that freely roam unnoticed in our air.

  • No. Air purifiers improve filtration but do not replace the need for proper air exchange.

  • UV light (Ultra-violet light) is safe in our air purifiers because the UV light is enclosed and not exposed to direct contact with our eyes or skin. Our air purifiers with Ultra-violet UV light are certified and safe for consumer use and do not offload any ozone or other harmful substances. UV light, however, is not safe to look at directly or have it shining on our exposed skin.

  • Yes and No. Our MedicAir Air Purifier and Duct-Mounted Ultra-violet light systems do not produce Ozone and are manufactured with high-quality standards. There are, however, cheap and low-quality UV lights available on the market which can and do produce Ozone.

  • Absolutely! UV light has multiple benefits including disinfecting all air that passes through your HVAC system. You can learn more about the benefits of ultra-violet light by visiting our Platinum Pure UV page.

  • HEPA is a pleated type air filter (similar to that of your furnace filter). HEPA stands for "High-Efficiency Particulate Air".

  • MERV is a rating used in pleated filters to measure its effectiveness. MERV stands for "Minimum Efficiency Reporting Value". You can learn more about MERV by clicking here.

  • MERV ratings measure a filter’s ability to capture particles within HVAC systems. HEPA filters capture a higher percentage of very small particles and are typically used in standalone purification systems.

  • CADR stands for Clean Air Delivery Rate. CADR is a measurement to determine how fast an air purifier can remove particulates from the air.

  • Yes, specifically when passing through to exposed UV light molds, viruses, fungi, and more become sterilized which destroys their DNA and also prevents the bacteria from reproducing.

Indoor Air Quality Frequently Asked Questions (FAQ)

Schedule Your Free Indoor Air Assessment

Our technicians measure and evaluate your indoor air conditions before recommending any solution. We assess airflow, filtration, and environmental factors so you understand what’s happening inside your home. Prefer to call? (519) 686-3595

A person holding an air quality meter showing a reading, while another person bends over to work on a piece of furniture in a wood-paneled room.