Directions to Holt Mechanical Directions to Holt Mechanical Search | Advanced Search | New Members | Coupons and Discounts | All Categories Real Estate & Construction >> Contractors - Plumbing, Heating, & Air Conditioning Holt Mechanical 137 Patti DriveWesterville, OH 43081 | map (614) 901-8020 | fax: (614) 901-5792 Visit Site Get directions to: Holt Mechanical, 137 Patti Drive, Westerville OH Get directions from: Click to Print This Page Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.