PLUMBING • HEATING • VENTILATION • AIR-CONDITIONING • REFRIGERATION • FIRE PROTECTION • BUILDING AUTOMATION • PROCESS PIPING • SHEET METAL
Since 1919, Zien Service, Inc. has served commercial, industrial and institutional customers throughout Wisconsin and Northern Illinois. A single-source contractor, we specialize in the design, fabrication, installation, maintenance and service of HVAC, plumbing, refrigeration and automation systems and more.
2303 West Mill Road
Glendale, WI 53209