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Major Indoor Air Quality Testing Concerns We Repair

We have seen every air quality concern a home can have. Here are the problems our clients call us about most often.

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Elevated Radon Levels in the Home

Radon is an odourless, colourless radioactive gas that seeps from the soil and bedrock beneath homes and accumulates in basements and lower levels. Health Canada sets the residential action level at 200 Bq/m3, and many older homes exceed this without any visible or detectable sign. We measure radon concentrations using professional-grade sampling and provide clear guidance on mitigation if levels require action.

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Carbon Monoxide From Gas Appliances

Carbon monoxide is produced when gas appliances, furnaces, water heaters, or fireplaces do not combust fuel completely, typically due to a cracked heat exchanger, blocked flue, or improper venting. Because it is odourless and colourless, it can reach dangerous concentrations before anyone realizes a problem exists. We test CO levels at multiple points in the home and identify the appliance or venting condition that may be contributing.

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High VOC Levels From Building Materials

Volatile organic compounds off-gas from paints, adhesives, flooring underlayment, cabinetry, furnishings, and cleaning products, often at elevated rates in newly renovated spaces. Persistent high VOC exposure is linked to respiratory irritation, headaches, and long-term health effects. We measure VOC concentrations across the home and identify whether ventilation adjustments or specific source removal is the appropriate response.

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Elevated Mold Spore Counts

Mold can establish in wall cavities, under flooring, in ductwork, and behind finishes long before it becomes visible from living areas. Elevated airborne mold spore counts often trace back to a moisture source such as a slow leak, inadequate vapour barrier, or insufficient bathroom or kitchen ventilation. We measure spore counts and help identify the moisture conditions that are allowing growth to occur.

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High Humidity Causing Mold and Condensation

Relative humidity that stays persistently above 50 percent creates conditions for mold growth, condensation on cold surfaces, deterioration of wood structural elements, and general discomfort. In cold-climate homes, high indoor humidity also leads to frost and moisture accumulation in attic spaces and wall assemblies. We measure humidity levels across the home and identify where mechanical ventilation or dehumidification may be needed.

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Fine Particulate Matter in Living Areas

Fine airborne particles smaller than 2.5 microns in diameter penetrate deeply into the respiratory system and are linked to cardiovascular and pulmonary health concerns with long-term exposure. Sources include combustion appliances, candles, attached garages, and outdoor infiltration through gaps in the building envelope. We measure particulate concentrations at multiple sizes and identify whether filtration or source control is the more effective response.

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Poor Ventilation and Stale Air

Carbon dioxide concentrations above 1,000 ppm in occupied spaces indicate that fresh air exchange is insufficient for the number of occupants and activities in the home. Inadequate ventilation allows all other indoor pollutants to accumulate more rapidly. We measure CO2 as a ventilation proxy and assess whether the home's mechanical ventilation system is providing adequate fresh air exchange for the building's occupancy and envelope tightness.

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Musty or Stale Smell Throughout the Home

Persistent stale or musty air typically points to a combination of insufficient ventilation, elevated humidity, and a biological source such as mold or accumulated organic debris in the ductwork or drain pan. While the symptom is common, the specific cause varies by home. We assess the contributing factors through systematic measurement rather than assuming a single source is responsible for the overall air quality condition.

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Unexplained Headaches or Dizziness at Home

Persistent headaches, nausea, or lightheadedness that improve after leaving the home can sometimes indicate low-level carbon monoxide or gas exposure from an undetected leak or combustion issue. If multiple household members experience these symptoms without an obvious cause, a full indoor air quality assessment is warranted immediately. We test the entire gas supply system, all appliance connections, and air quality across the home.

Reviews

What Our Customers Say

★★★★★

Finally got real answers about our air

We had been dealing with recurring headaches that nobody could explain. The technician tested for several contaminants and found our radon levels were above the action threshold. The report was clear and the next steps were straightforward. Very glad we did this instead of guessing.

★★★★★

Thorough and explained everything clearly

After a basement renovation, I wanted to make sure the new materials were not off-gassing at problem levels. The technician walked me through what he was testing and why, and the results came back with everything in an acceptable range. Appreciated the professional approach and the clear report.

★★★★☆

Good service, report took a little longer

The on-site visit went smoothly and the technician was knowledgeable. The written summary took a couple of days longer than expected, but when it arrived it was detailed and easy to understand. Would recommend for anyone who wants actual data rather than guessing about their home's air.

★★★★★

Peace of mind after water damage

We had a slow leak behind a wall that went undetected for a while and I was worried about mold spore levels after the repair. The testing showed the levels were within normal range, which was a huge relief. The technician was efficient and the whole visit took about two and a half hours.

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Recommended for any older home

Our house is from the early eighties and I had concerns about the air quality for a while. The test covered everything I was worried about. Carbon monoxide was fine, radon was low, and the humidity levels were manageable. The technician pointed out one area worth improving for ventilation and gave practical suggestions.

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Professional from start to finish

Booked the service before listing our home and wanted to be confident in the air quality disclosure. The technician arrived on time, was respectful of the space, and left a clean written report I could reference during the sale process. Quick to book and easy to deal with throughout.

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