Greenheck has released two new online instructional videos for its line of direct gas-fired makeup-air units that provide tempered air for various applications. “Direct Gas-Fired Makeup-Air Pressure Drop” shows how to measure and adjust for pressure drop in a make-up air unit, and “Direct Gas-Fired Makeup-Air Pre-Start Checks” reviews steps to be taken prior to making the unit operational. The Greenheck’s series of “how to” videos are designed to help contractors and facility managers handle common maintenance issues specific to HVAC equipment. To view these videos, visit, click on the “Library” link found on the home page navigation bar and then click on “Videos.”

Greenheck; (715) 359-6171