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Functional Testing Can Be a Waste of Money Without Design Review – Case Study

Commissioning / By

We received a call from a client seeking “commissioning.” Their project was already in construction, and they thought commissioning meant “functional testing.” We explained why functional testing without design review is a waste of money. During testing, we might be able to find issues, but by then it may be prohibitively expensive to fix or […]

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What Does a VAV Box k-factor Mean for Efficient Building Operation?

Commissioning, HVAC, Retro-Commissioning / By

In heating, ventilation and air conditioning (HVAC) systems, airflow reported at the variable air volume (VAV) box is actually a measure of total pressure. It gets converted into an airflow by a multiplier that is generated during testing, adjusting and balancing (TAB). This multiplier is commonly called “k-factor”, but can also be called flow multiplier,

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