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Appleton, WI

Ahern offers complete mechanical and fire protection services to the greater Appleton area, along with prefabrication expertise from our corporate office. Whether you’re a general contractor, building owner/representative, or construction partner, Ahern offers the manpower, resources, and experience to complete your requests quickly and accurately.

Fire Protection Services

Fire protection systems are our bread and butter. Our services range from basic design, to installation, servicing and repair. With a team of NICET-certified designers, experienced in-house fabricators, and seasoned field teams, we're well equipped to meet your project's needs. 
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Commercial HVAC Services

Since our inception, we've been a go-to commercial HVAC contractor in the Appleton area. From central station air handling systems, to hot water heating plants, to variable refrigerant flow systems and everything in between, we have yet to find a project we can't handle. 
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Commercial Plumbing Services

Whether it pertains to an existing building or new construction project, we'll efficiently and effectively design, install, maintain and repair its plumbing systems. As one of the most established commercial plumbing contractors in Appleton, WI, we have the resources and experience to complete your project in a timely fashion. 
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Pipe Fabrication Services

No pipe fabrication job is too difficult for our Appleton team. Serving industries like power generation, food and beverage, pulp and paper, automotive, chemical, and many more, we can fabricate pipes ranging from 1/2-inch to 144-inch diameters, wall thicknesses up to four inches, and do so with a 98% on-time delivery rate. 
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Process Piping Services

Whether your process piping systems carry solids, liquids, or gasses, whether you operate in the pharmaceutical, pulp and paper, printing, manufacturing, alternative fuel, or power plant industries, our Appleton team has the know-how and state-of-the-art facility for accurate, efficient and effective process piping solutions. 
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Location Features:

  • 13.678 Acres
  • Pipe Fabrication Shop - 52,234 sq ft
  • Industrial Services Shop - 17,525 sq ft
  • Office Space - 38,000 sq ft
  • Fire Safety & Equipment Shop - 6,916 sq ft
  • Tools & Equipment Shop - 2,374 sq ft


Contact Info

2111 North Sandra St.
Appleton, WI 54911
United States