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NOBODY CAN CREATE EXPERIENCE. IT MUST BE UNDERTAKEN.

Quality​

Our standards are high. So high in fact, we're in a league of our own, moving our entire industry forward. Zien's Mechanical Service has become synonymous with the highest quality craftsmanship.

Almost 100 Years Experience

Reliability
It's old fashioned now, but we do what we say we're going to do. Plain and simple. Our word is bond, and that applies to our deadlines, as well. We are always ready to go that extra mile for you. No one has ever complained about having their work executed perfectly.

Technology

We're continually training our techs with the newest technologies. We take immense pride in driving the industry standards forward, employing best practices from state-of the art solutions and old-school know-how.

Zien Service, Inc. is a single-source Mechanical Contractor offering a wide array of in-house services including Plumbing, Heating, Ventilation, Air-Conditioning, Refrigeration, Process Piping, Building Automation Systems and more.

 

Since 1919, Zien has forged a solid reputation by providing excellent service throughout Wisconsin, Northern Illinois and Southern Minnesota. Our team is proficient in implementing solutions for commercial, industrial and institutional systems, regardless of size or complexity. Proof is demonstrated in our long list of prestigious projects.

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With service offerings in the Consulting, Energy, and Facility Services fields, Zien advocates collaborative and sustainable solutions that are designed to ensure occupant comfort, improved system efficiency, reduce facility operational costs and optimize client profitability for the life of their building.

 

Zien has the expertise to handle all your mechanical needs, from design and engineering to fabrication, installation, maintenance and repair. From restaurants and complex buildings to steel foundries and mission critical data centers, Zien services all brands of heating, air conditioning, ventilation and refrigeration equipment.

 

Our Mission is to complete projects on time, within budget, and in a safe and cooperative work environment.

Trust Zien Service with your Building Systems

EXPERIENCE

The best knowledge is attained through experience.

EVERYTHING YOU NEED IS UNDER ONE ROOF AT ZIEN MECHANICAL SERVICE, INC.

QUALITY IS REMEMBERED LONG AFTER PRICE IS FORGOTTEN

DIFFICULT JOBS TAKE TIME. IMPOSSIBLE JOBS TAKE A LITTLE LONGER.

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