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Aldag / Honold Mechanical, Inc. is dedicated to creating quality environments that are designed to meet your individual needs. Aldag / Honold Mechanical, Inc. serves the Industrial, Commercial and Institutional marketplace with complete design and build capabilities for custom Piping, Heating, Air Conditioning and Metal Fabrication. We use the latest technology to deliver creative solutions sensitive to the unique needs of each customer.

We have a staff of 75 employees in various capacities including Stainless Steel Specialty and Food Grade Specialty Fabrication, Plumbers, Steamfitters, Environmental Service Technicians, Engineers and Support Staff.
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At Aldag / Honold Mechanical, Inc. our goal on any project, large or small, is to exceed our customer's expectations. We are a single source mechanical contractor specializing in design/build industrial, commercial, and residential environmental systems and custom fabrications. We differentiate ourselves in the mechanical contracting industry by offering the highest level of quality and service, with attention to detail. With this approach, we are able to build long term relationships with our customers that are mutually beneficial.
Aldag / Honold Mechanical, Inc. (formerly Aldag Sheet Metal Works Inc.), established in 1929 by Marvin and Daisy Aldag, was incorporated as a Wisconsin Corporation in 1964. Sons, Jerome and Kenneth, continued the tradition as second-generation owners, and today, a third-generation, David Aldag, continues to manage and oversee the day-to-day operations as President of the firm. In 1991, Aldag Sheet Metal Works, Inc. acquired the assets of the R. P. Honold Co., Inc. R. P. Honold Co., Inc. was founded in 1898.
Aldag / Honold Mechanical, Inc. serves the Industrial, Commercial and Institutional marketplace with complete design and build capabilities for custom Piping, Plumbing, Heating, Air Conditioning and Metal Fabrication. We use the latest technology to deliver creative solutions sensitive to the unique needs of each customer.
Aldag/Honold is an outstanding company to work with. They have done work on our building automation systems, pumps, heat exchangers, ventilation systems and are responsive 24/7. We have had a relationship with them for over thirty Aurora Facilities in Sheboygan, Fond du Lac, Manitowoc, Two Rivers, Hartford, and Oshkosh, WI.
Reviews (5)
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Heidi Halverson
Dec 23, 2021
Fantastic service. Extremely dedicated hardworking staff. A pleasure to do business with. I have only good things to say about Dave Aldag and everyone who works for him. Service: Heating system installation
Sandie Dieringer
Dec 22, 2020
Services: Heating system installation, Heating system repair, A/C system maintenance, Ductless heating & A/C services, Heating system maintenance Value
Ken Howard
May 14, 2020
Called several weeks early to set up a maintenance check on a boiler system. On the day scheduled, no technician showed up. Called only to be told that there was a scheduling error and could we re-schedule for the next day. The next day no one appeared. When I called, the response was "No way." Obviously, customer service is not a selling point of Aldag Honold.
Jason I.
Mar 15, 2020
Very professional, always on time and decently priced what more could you ask for thanks A/H. SSCM Maintenance.
Tiffany Lepak
May 23, 2016
Worst services ever! Billed me for not even having any work done! Didn't even get a bill pr nothing, just a letter from a debt collector! Would not recommend to anyone with how disrespectful they are!