Written by HVAC Professionals for HVAC Professionals

Evergreen Telemetry CH-15D Balancing Hood

In every balancing class I teach, I am always asked “which balancing (capture) hood should I buy?”

Because there are so many options available today, the choice can be daunting. My answer is always to consider the type of projects you usually work on, what other test instruments you own, and what are their limitations?

Why? Because you want a new capture hood that complements those instruments and compliments any other hood you already own.

The Evergreen Telemetry CH-15D or the 15” capture hood is particularly of interest. This hood sets itself apart from competitive products in several ways.

First, it is significantly lighter than other products. You can use a standard painter’s pole to extend the hood to elevated registers in ceilings and walls.

Also, Evergreen uses rare earth magnets on the opening frame of the skirt allowing it to attach to the register or grill in T-bar ceilings and metal registers.

Plus, they developed a wrist recorder that, when worn by the balancer, allows for quick and accurate balancing damper adjustments while the hood is at the register. The recorder can be worn on your wrist or can be mounted on the hoods base for different situations.

The manometer allows for a multi tool approach: it can be used as a manometer, and it can be attached to other flow measurement instruments that Evergreen offers.

The wrist recorder and manometer can also be paired with other temperature and humidity sensors that allow recording specific information while balancing a system.

There is a learning curve to assembling and setting up Evergreen Telemetry products. However, those initial difficulties wash away after you get comfortable using the CH-15D and its accessories.

Learn more about this hood at ncilink.com/CH-15D.

— By Jeff Sturgeon, NCI Southern California Training Center Manager, Trainer, and Coach