Milwaukee, WI: 414.332.6000 l Eagan, MN: 651.890.0720

About Us

Combustion made Simple

Since 1958, our main goal has been to provide the finest innovative solutions and products for your process heating and control engineering.  Markets Served

We review your application, taking careful detail to the selection of the best products, with the most reasonable costs, to provide an energy effective system for your needs. We provide you with on-going field service and support. If you want Engineered Solutions that work, then call us now.

Two Locations – see our maps below

Marshall W. Nelson & Associates predominantly serves the midwest region in WI, MN, UP of MI, ND, SD, and Northern IL.


Marshall W. Nelson & Associates, Inc.
4300 North Port Washington Road
Milwaukee, WI 53212
Phone: 414-332-6000
Fax: 414-332-2400


Marshall W. Nelson & Associates, Inc.
4155 Old Sibley Memorial Highway
Eagan, MN 55122
Phone: 651-890-0720
Fax: 651-890-7009