Gundlach Sheet Metal Share: Contractor - HVACContractor - HVAC PlumbingContractor - Plumbing Visit Website Request Info 910 Columbus Ave. Sandusky, OH 44870 (419) 626-4525 (800) 953-4525 (419) 626-9365 (fax) gundlachsheetmetal.com LinkedIn Facebook Twitter About Map About Gundlach Sheet Metal Works, established in 1889, is a family owned and operated company specializing in the installation and repair of heating, air conditioning and ventilation. What's Nearby? Distance: 5 10 15 20 25 50 mi.