Employment Interested in joining the Kohles & Bach team? We’re always looking for HVAC Service Techs. Benefits include top pay, major medical insurance, 401k plan with employer contribution, vacation/holiday pay, your birthday off with pay and an on-call bonus. Email your resume to email@example.com or stop by our office: 5185 NW Beaver Dr. in Johnston. For more info, call 515-278-2900. Kohles & Bach has been serving the greater Des Moines area’s heating and cooling needs since 1945. We were named a 2013 Iowa Better Business Bureau Integrity Award Recipient and has an A+ Rating from the BBB.