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We specialize in Testing, Adjusting & Balancing services that ensure your HVAC systems operate at peak efficiency with documented performance verification.
Pre-readings are the existing, as-is measurements of an HVAC system taken before renovation, demolition, tenant fit-out, equipment replacement or final balancing: airflow at terminals and equipment, static pressures, fan performance and, when applicable, water flows. They establish a documented baseline, protect the owner and the contractor from disputes about pre-existing deficiencies, and give the engineer real data to design from. Many project specifications (Division 23 05 93 — Testing, Adjusting and Balancing) require them; when they do, GreenTech Air Balancing quotes pre-readings as a clearly identified item.
Duct leakage testing pressurizes a section of ductwork with a calibrated test fan and measures the leakage at the specified test pressure, following the SMACNA HVAC Air Duct Leakage Test Manual. The measured leakage is compared with the allowable leakage class (CL) specified by the engineer for that duct pressure class — typically on medium- and high-pressure supply ducts, laboratory and healthcare exhaust, and wherever energy codes or specifications call for it. Sections that fail are documented so the sheet metal contractor can seal them, then re-tested.
Send us the mechanical specifications and drawings and we will quote pre-readings and duct leakage testing as separate, clearly defined items, usually within one business day.
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1
We begin with a detailed review of the HVAC systems to understand design intent, current operating conditions, and performance gaps. Our team evaluates airflow, waterflow, static pressure, and control sequences to establish an accurate baseline before any adjustments are made.
2
Using industry-standard TAB instruments, we perform precise field measurements across the entire system — diffusers, grilles, VAV boxes, terminal units, hydronic loops, and mechanical equipment. Each measurement follows recognized balancing procedures to ensure repeatable and reliable results.
3
Once optimal performance is achieved, we compile a comprehensive report including measured data, compliance verification, system observations, and corrective recommendations. Our documentation is structured for engineers, consultants, and facility managers to support long-term building efficiency.
Independent HVAC Testing, Adjusting & Balancing firm serving Ottawa–Gatineau, the Outaouais, Eastern Ontario and Western Québec.
Our work follows recognized industry standards and procedures (AABC, NEBB, ASHRAE, SMACNA) to deliver accurate airflow, reliable system performance and better indoor air quality for our clients.
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