HVAC Training is needed when alterations or significant changesneed to be made to a sizeable air distribution system those changes are probably going to change the operating characteristics of a buildings complete HVAC system, not only the air distribution and ventilation portion. In cases like these it is advisable to perform what is known as a testing, adjusting, and balancing TAB certification.

This work was doubtless done at initial installation by an engineer or contractor who was concerned in the installation to ensure that the various flows of ventilation air, and chilled or heated water, were adequate to meet the heating, cooling, and airflow specs for the building design.

This verification should be done again as a useful audit and baseline reference for the updated system after major system changes are made. Professional contractors experienced in this area are sometimes certified by a recognised pro society eg the Nationwide Environmental Balancing Bureau (NEBB) or the Associated Air Balance Counsel (ABC).

If your organization isn't kitted out to perform this documentation, it could be desirable to bring an independent TAB contractor who has experience in this kind of work and who can also serve as a unprejudiced 3rd party to ensure efficacy of the changes your company has made to the HVACR system.

Top 10 Air Distribution Issues

– Air distribution is uneven throughout rooms and from zone to area due to poor duct design and installation or incorrect for the area.
– Air stratification or dead sections are obvious causing cold and warm spots in a room.
– The AHU blower is sized or sheaved incorrectly for the building demands.
– Unjustifiable noise is being generated by the air handling unit or other kit and also from excessively high or partially restricted airflows from ducts.
– Upkeep is not frequent enough to keep filters clean and the systems operating efficiently.
– Airflow is obstructed by building features or office fixtures or furniture.
– Comfort isn't maintained and varies over the course of the day.
– Service accessibility for various kinds of kit is poor.
– The system was not tested, altered, and balance correctly at start up.

EPA Certification information is available at HVAC Training. Mike Saxet writes for HVAC publications.