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28 Years
experience
Emergency
services
Trusted HVAC & Mechanical Contractors in Sheboygan
Aldag Honold has been dedicated to creating quality environments tailored to individual client needs since its founding. With over 25 years of experience, the company specializes in design/build mechanical contracting for industrial, commercial, and residential projects, offering comprehensive services including HVAC, plumbing, piping, and custom metal fabrication. Our team of 75 skilled professionals utilizes cutting-edge technology and a commitment to detail to deliver innovative solutions that exceed customer expectations. We maintain industry-leading expertise through affiliations with organizations like SMACNA, MCAA, and ASHRAE, ensuring cost-effective, energy-efficient systems designed for long-term performance. Our 50,000-square-foot facility in Sheboygan, Wisconsin, houses state-of-the-art fabrication equipment and a dedicated service department available 24/7 for emergency support.

Through rigorous training programs and a focus on safety, we provide certified technicians who deliver superior installations and maintenance services. Our reputation for reliability is evidenced by decades-long relationships with clients across Wisconsin and beyond, who consistently praise our ability to complete complex projects on time and within budget. From dust collection systems to architectural metalwork, we combine craftsmanship with technical precision to address unique client challenges. Our preventive maintenance programs and 24-hour service ensure continuous system optimization, while our fabrication capabilities meet exacting standards for food-grade and industrial applications. This unwavering commitment to quality has established Aldag Honold as a trusted partner for mechanical contracting solutions.
Services
HVAC Systems Plumbing Services Custom Fabrications Dust Collection 24/7 Maintenance
Details
  • Year established: 1998
Highlights and features
  • We offer 25+ years of mechanical contracting experience with specialized fabrication capabilities
  • Our 75-member team includes certified welders and engineers with industry-specific expertise
  • 24/7 emergency service ensures continuous system operation and rapid response times
  • Custom fabrication facility meets food-grade and industrial standards with precision
  • Affiliated with leading industry organizations for up-to-date technical knowledge and practices
Associations and certifications
  • Sheet Metal and Air Conditioning Contractors National Association (SMACNA)
  • Mechanical Contractors Association of America (MCAA)
  • American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
  • National Society of Professional Engineers (NSPE)
  • National Environmental Balancing Bureau (NEBB)
  • International Training Institute (ITI)
  • National Energy Management Institute (NEMI)
What people say
Exceeds expectations Expertise Timely completion 24/7 service Quality installations
Services
Custom Fabrications
Our 50,000-square-foot facility creates custom stainless steel and food-grade components using advanced equipment. We produce bulk hoppers, architectural elements, and industrial parts with precision finishes. Certified welders and engineers ensure compliance with exact specifications for commercial and industrial applications.
HVAC Systems
We design and install commercial HVAC systems including boilers, chillers, and air handling units. Our technicians provide 24/7 maintenance and emergency repairs for industrial and institutional clients. Energy-efficient solutions meet specific operational requirements while ensuring occupant comfort.
Plumbing Services
Comprehensive plumbing solutions cover water distribution, drainage, and specialized piping systems. Our certified professionals handle commercial plumbing installations, repairs, and preventive maintenance. We work with various materials and system types to meet industrial and residential needs.
Dust Collection
Custom dust collection systems protect industrial environments with proper sizing and explosion prevention features. We engineer complete solutions from initial design to installation and ongoing maintenance. Systems ensure workplace safety while maintaining operational efficiency for manufacturing clients.
24/7 Maintenance
Around-the-clock support covers all mechanical systems with rapid response times. Certified technicians handle urgent repairs for HVAC, plumbing, and industrial equipment. Preventive maintenance programs extend system lifespan while minimizing unexpected downtime for commercial operations.
People
Dave Aldag
Owner
With over 25 years in mechanical contracting, Dave Aldag leads the company's strategic direction while maintaining hands-on involvement in complex projects. His expertise ensures technical excellence across all service offerings.
Mark Deamico
Manager of Manufacturing Engineering
As key client representative, Mark coordinates custom fabrication projects for American Orthodontics. His 15+ year partnership with Aldag/Honold demonstrates the company's ability to meet exacting manufacturing specifications consistently.
Steve Mashl
Facilities Manager
Steve oversees dust collection system installations and upgrades at Valley Cabinet. His experience highlights the company's technical expertise in industrial air quality solutions and system optimization.
Rick Neerhof
Facilities Manager
With multiple successful projects across Nemschoff locations, Rick attests to the company's reliability in HVAC and mechanical system installations that consistently exceed expectations.
Richard Miller
Facilities Representative
Representing Aurora facilities, Richard has worked with Aldag/Honold for over 30 years on automation systems and mechanical upgrades, emphasizing their long-term service excellence and competitive pricing.
Questions
What industries do you serve?
We serve industrial, commercial, institutional, and residential clients with mechanical contracting solutions across Wisconsin and surrounding areas.
Do you offer emergency services?
Yes, our 24/7 emergency service provides rapid response for HVAC, plumbing, and industrial system issues with technicians available at all times.
What custom fabrication capabilities do you have?
Our 50,000 sq. ft. facility handles stainless steel, food-grade, and architectural metalwork with advanced equipment and certified welders.
How do you ensure project quality?
Through rigorous technician training, industry certifications, and a 25+ year track record of completing complex projects on time and within budget.
What service areas do you cover?
We primarily serve Sheboygan, Fond du Lac, Manitowoc, and surrounding Wisconsin communities with mechanical contracting expertise.
Can you handle both installation and maintenance?
Yes, we offer complete design/build services plus preventive maintenance programs for HVAC, plumbing, and industrial systems.
Reviews (5)
Heidi Halverson
Dec 23, 2021 Report
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 Report
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 Report
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 Report
Very professional, always on time and decently priced what more could you ask for thanks A/H. SSCM Maintenance.
Tiffany Lepak
May 23, 2016 Report
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!