Dave Raabe is an industry veteran with 28 years of experience as a manufacturer’s representative and wholesaler. Raabe is the sales manager and co-owner of ROI Marketing, a plumbing and heating rep firm based in Millersville, Maryland that covers the mid-Atlantic region. Raabe has extensive experience in hydronic system layout and design.
Keystone Air Power is a thriving Amish enterprise that runs a fully modern hardware store in Central Pennsylvania. The 52,000-square-foot building is constructed around a cutting-edge, off-grid mechanical and electrical system that demonstrates the Amish's knowledge of smart technology.
