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Our air quality testing process is designed for accuracy, clarity, and reliability — from initial indoor assessment and air sampling to laboratory analysis and clear reporting. We focus on evaluating indoor air conditions, documenting findings, and providing objective results to support informed decisions.
We begin with a detailed assessment of the indoor environment, reviewing areas where air quality concerns may exist. Our inspectors evaluate general conditions, occupant concerns, airflow patterns, and indicators that may affect indoor air quality.
We begin with a detailed assessment of the indoor environment, reviewing areas where air quality concerns may exist. Our inspectors evaluate general conditions, occupant concerns, airflow patterns, and indicators that may affect indoor air quality.
When appropriate, we collect indoor air samples using industry-approved methods. Sampling locations are selected based on assessment findings to help accurately evaluate airborne particles and overall air quality conditions.
Outdoor Air Sample Collection helps establish a baseline for comparing indoor and outdoor air quality. By analyzing outdoor air samples, we can identify airborne contaminants and determine whether indoor air quality issues are coming from inside or outside the property.
Collected air samples are submitted to accredited laboratories for analysis. This step helps identify airborne particle levels and other indicators, providing reliable data to support clear and accurate conclusions.
Review the results and provide a clear air quality report outlining findings, observations, and relevant insights. Our goal is to help property owners understand indoor air conditions and consider appropriate next steps, without obligation for additional services.
A professional air quality testing process provides clear insight into indoor environments and helps reduce uncertainty when addressing potential air quality concerns.
Know a homeowner, property manager, or business dealing with water damage, flooding, mould, storm damage, or another property emergency? Refer them to our team and earn rewards for qualified projects.
Whether you’re a returning client, property manager, or insurance professional, we offer preferred pricing as part of our long-term service relationships.





Indoor air quality issues often go unnoticed but can affect comfort, health, and overall well-being over time. Airborne contaminants, poor ventilation, and elevated humidity may impact indoor environments even when no visible issues are present. Timely air quality testing helps identify conditions early, document findings accurately, and support informed next steps.
Professional air quality testing provides clear insight into indoor environments and helps support healthier, more comfortable living spaces over time.
Posted on Gord PalbodTrustindex verifies that the original source of the review is Google. outstanding crew. thank you for an excellent job to Farzam and his crew.Posted on Khadijeh ChoupanTrustindex verifies that the original source of the review is Google. Thank you for an excellent job Majid. All that terrible cigarette smell and now it's all gone. It was like majic, Majid. Thank you. Thank you.Posted on Deb PyneTrustindex verifies that the original source of the review is Google. I had googled for heavy duty cleaning that was needed for my Brother, (has some physical issues) I supplied them with pictures. They sent me a quote & the job was scheduled immediately as it was time sensitive. I met the GTA Gentleman @ the front door of my brother’s condo. They went straight to work & did such an amazing job. I was thrilled with the out come as it was a big job. I would definitely recommend them to anyone!! Very professional, friendly & very respectfulPosted on Amin HamediTrustindex verifies that the original source of the review is Google. The 247-365 Restoration team responded quickly, arrived on time, and immediately took control of the situation. They were professional, well-organized, and clearly experienced in flood cleanup. Everything was explained step by step, and the cleanup was handled efficiently and carefully. A trustworthy choice for emergency water damage and flood restoration services.Posted on Sikander KanjiTrustindex verifies that the original source of the review is Google. Amazing experience, very professional, clean work, helpful and amazing crew.Posted on Tiana RoseTrustindex verifies that the original source of the review is Google. Nijen's team replaced and build a privacy wall on our back deck last Friday. They were professional, and efficient and we couldn't be happier with the end result. Thank you to Nijen and his team. We would definitely hire them again for our renovation needs and recommend them to everyone. TianaPosted on Mathew WhiteTrustindex verifies that the original source of the review is Google. I engaged First On Site as a preferred vendor through my insurance provider following an unsatisfactory experience with another restoration company. Understandably, I approached the process with some hesitation. From the outset, the team at First On Site demonstrated exceptional professionalism. They maintained clear and consistent communication, keeping me informed of all timelines and progress updates. Their responsiveness and attention to detail far exceeded my expectations. Upon arrival, the crew began work immediately and remained focused and diligent throughout the day. Their efficiency, professionalism, and respect for my property were commendable. Additionally, the team effectively liaised with my insurance company, ensuring the scope of work was completed exactly as described and to a high standard. I would not hesitate to recommend First On Site to anyone requiring disaster management or restoration services. Their commitment to quality and client satisfaction is truly exemplary.Posted on siddharth khannaTrustindex verifies that the original source of the review is Google. I called them at 7 am for an emergency basement pipe burst leakage and they sent out a crew within a couple of hours who knew exactly what needed to be done. They documented the damage thoroughly for insurance purposes and I faced no trouble. The team at GTA are professional and helpful. Totally recommend!Posted on Mark EsdaleTrustindex verifies that the original source of the review is Google. After a ice storm related basement flood the GTA team showed us what service meant!. They were here very quickly, with the proper drying equipment and some great staff members. They removed old carpeting/under padding and the bottom 12 inches of drywall from the affected flood area, installed and left drying machines, were back in a week to repair the drywall. We could not have asked for a better job, very glad we chose them.
Guaranteed on-site arrival within 45 minutes of your call, day or night.
Certified restoration, environmental inspection, & property assessment.
Fast scheduling available across the GTA, and Southern Ontario.
Professional documentation and support for insurance-related claims.
Honest, upfront pricing with no hidden fees or surprise charges.
Serving Toronto, the GTA, and Southern Ontario for 25+ years.
With over 25 years of hands-on experience and more than 6,000 completed projects, we provide professional indoor air quality testing with transparent pricing, detailed assessments, and reliable laboratory analysis. Our experienced inspectors carefully evaluate airborne contaminants, ventilation, and environmental conditions to deliver accurate results and clear documentation you can trust.
Clear & Transparent Air Quality Testing Pricing
Accurate Assessment & Lab-Based Air Testing
Experienced Indoor Air Quality Professionals
Our air quality testing team works efficiently to assess indoor conditions, document findings, and help property owners better understand factors that may impact comfort and well-being.
Clear answers to common questions about professional indoor air quality testing, testing methods, reporting, timelines, and what to expect during the assessment process.
Yes. We provide professional indoor air quality testing services, including air sampling, environmental assessment, and laboratory analysis to help evaluate indoor air conditions accurately.
Concerns such as lingering odours, poor ventilation, allergy-like symptoms, humidity issues, or discomfort indoors may indicate the need for air quality testing. Testing helps assess conditions that are not always visible.
Most air quality testing appointments take a few hours, depending on the size of the property and the number of samples collected. Laboratory analysis timelines vary, and results are shared once testing is complete.
Yes. Indoor air quality testing is non-invasive and safe. Air samples are collected using approved methods designed to minimize disruption while ensuring accurate results.
Air quality testing may assess airborne particles, ventilation effectiveness, humidity levels, and other indicators that can affect indoor comfort and air conditions. Laboratory analysis helps provide objective data.
Yes. Early air quality testing helps identify potential concerns before they worsen. Clear reporting and documented results support informed decisions about improving indoor environments.
Our air quality testing process is designed for accuracy, clarity, and reliability — from initial indoor assessment and air sampling to laboratory analysis and clear reporting. We focus on evaluating indoor air conditions, documenting findings, and providing objective results to support informed decisions.
Serving Toronto, the GTA, and communities across Southern Ontario with rapid response restoration, waterproofing, and emergency property services when and where you need them most.