ASHRAE Columbus Chaper

Columbus ASHRAE: September Luncheon: Indoor Agricultural Cultivation Design
2025-09-22 11:45 - 13:00 (America/New_York) | Nationwide & Ohio Farm Bureau 4-H Center, 2201 Fred Taylor Dr,, Columbus,, OH, 43210, United States
This month is our first luncheon of the 2025-2026 ASHRAE Year. We have Garrett Greenlee that will be presenting on Indoor Agricultural Cultivation Design

Garrett Greenlee, Founder of Day Arc, is a leader in plant physiology and engineered systems design, driving innovation in the development of cutting-edge indoor cultivation environments. He spearheads the strategic planning and execution necessary to fulfill Day Arc’s mission of delivering the most efficient and precisely controlled indoor growing solutions worldwide.
With over 20 years of experience in the construction industry, Garrett combines his expertise in HVAC, Direct Digital Control (DDC) building controls, and Johnson Controls MetaSys certification to optimize building performance. He is an accomplished inventor with multiple patents and has specialized in the design, construction, and operation of advanced commercial indoor cultivation and processing facilities.
Garrett’s advanced knowledge of LED lighting technology and dedication to high-tech renewable energy solutions, including solar and geothermal systems, underscore his commitment to sustainable innovation. As a founding member of the US Solar Institute in Fort Lauderdale, Florida, he has been at the forefront of the renewable energy movement.
Holding a Bachelor of Science in Mechanical Engineering from The Ohio State University, Garrett applies strong analytical and problem-solving skills to every venture he undertakes.
He resides in Columbus, Ohio, with his wife and enjoys family gatherings with their four daughters and two grandchildren. Always eager to explore new culinary experiences, Garrett frequently experiments with recipes and hosts warm, memorable dinners.

October Luncheon: The Benefits of Hybrid Solutions to Hydronic Heating.
2025-10-20 11:45 - 13:00 | Nationwide & Ohio Farm Bureau 4-H Center, 2201 Fred Taylor Dr,, Columbus,, OH, 43210, United States
Air-to-water heat pumps are rapidly gaining traction as hot water generators for hydronic heating in commercial buildings, thanks to their exceptional energy efficiency and low carbon emissions. However, their performance can be challenged during periods of low outdoor air temperatures. A hybrid approach—pairing air-to-water heat pumps with backup boilers—offers a practical and resilient solution, maintainin reliable building operation year-round with only a minimal tradeoff in carbon emissions. This presentation explores the design and performance of hybrid systems, demonstrating how they offer a realistic path toward meeting climate goals without compromising on comfort or reliability.
Chris Lane is a Product Manager at Cleaver-Brooks, bringing over 33 years of experience in the HVAC industry. In his current role, he focuses on developing and delivering environmentally sustainable hydronic and steam products and solutions. Prior to joining Cleaver-Brooks, Chris led the building automation system product management team, where he played a key role in advancing smart building technologies. An ASHRAE Certified Decarbonization Professional, Chris is committed to helping customers achieve comfortable, efficient, and sustainable building environments. He holds a Bachelor of Science in Electrical Engineering and a Master of Business Administration.

CLICK HERE TO REGISTER

ASHRAE December Luncheon: Ethics w/ Julia Timberman
2025-12-22 11:45 - 13:00 | Nationwide & Ohio Farm Bureau 4-H Center, 2201 Fred Taylor Dr,, Columbus,, OH, 43210, United States
Test your “Ethics IQ” against real cases. Engineers are often confronted with ethical issues (whether they realize it or not). In this presentation you will engage in an interactive session where you are presented with multiple ethics cases, then you will discuss the cases in small groups, and then reveal their decisions. The cases that will be presented are all part of the NSPE’s Board of Ethical Review Online Cases.
Julia Timberman, PE
During her 25+ years working in the HVAC industry in Columbus, Julia Timberman has worked in a variety of roles, from contracting to design to sales. She began her career interning for a mechanical contractor where she fell in love with the industry. After graduating from college, Julia transitioned to an engineering firm where she learned the design side of the industry, blending in practical experience from her time spent working for a mechanical contractor. In 2013 she earned her P.E. in HVAC. In recent years, Julia has moved to the sales side of the industry, where her personality and experience have allowed her to evaluate customer needs through the lens of a contractor’s practicality, an engineer’s design considerations and a project manager’s requirements, to help tailor solutions to meet her client’s needs.
Julia currently serves as the ASHRAE Director Regional Chair for Region V, representing the ASHRAE members in Ohio, Indiana and Michigan at a society level and helping to guide and shape ASHRAE as part of the Board of Director’s.

~~Meeting Cancelation Notice~~
2026-01-26 11:30 - 14:00
We regret to inform you that, due to current weather conditions and road safety concerns, our technical presentation and lunch meeting originally scheduled for January 26th has been canceled. The safety and well-being of our members and guests are our top priorities.

Thank you for your understanding and patience during this time. Please stay safe, and we look forward to seeing you at our upcoming events.
Best regards,
ASHRAE Columbus Chapter
