Gretchen M Tillson, Engineer – Mrs. Tillson is an Engineer with GDS Associates. Gretchen is based in the firm’s northeast regional office located in Manchester, NH. She earned a Bachelors of Science Degree in Architectural Engineering from Keene State College in Keene, NH. While at Keene State, Gretchen worked for award winning Mechanical Engineers Kohler and Lewis, performing drafting, design, pipe sizing and heat load calculations for many school buildings and other projects in the New England region.

After graduating in 2002, Gretchen worked in various aspects of the building engineering and design fields, from log and timber frame homes design and construction, building materials sales and retail, to bridge and highway demolition, coming back to building energy as a passion discovered in school and now realized at GDS Associates.

She has since been providing GDS with technical support for consulting projects across New England. Gretchen has performed walkthrough energy audits at various commercial and industrial facilities in New Hampshire. Gretchen implements the PSNH Home Performance with ENERGY STAR Program, performs site inspections for the Energy Star Homes program and provides assistance on various other residential projects in the New Hampshire Office. She is currently Building Performance Institute Building Analyst and Proctor certified, NAHB Green Building Verifier, and she is a RESnet certified Home Energy Rater.