Representing Top Quality Manufacturers of industrial grade heat transfer & pollution control equipment


Heat Exchanger Sales & Engineering Co., LLC (HESECO), founded in 1972, is a manufacturer's representative organization specialized in engineered products and services. We represent top quality manufacturers of industrial grade heat transfer and pollution control equipment. HESECO's offerings meet the spectrum of heat transfer and pollution control design criteria to provide our customers the best product match for their particular needs. We sell both standard and custom designed equipment and systems. In addition, several of our manufacturing partners provide in-house design capabilities.

HESECO offices are staffed by engineers with design and sales engineering experience, allowing us to deliver accurate quotes within short turnaround times.

The following are our HESECO locations and points of contact:

Jay E. Christiansen
1415 Kamps Avenue, Suite #4
Appleton WI 54914
Telephone: 920-749-1960
Fax: 920-749-1963


Alan M. Deutsch
1288 Oakcrest Avenue
Roseville MN 55113
Telephone: 651-628-9753
Fax: 651-633-9689


Jay E. Christiansen
HESECO Bearing Oil Cooler Sales
N1102 29th Avenue
Berlin, WI 54923
Telephone: 920-361-3589


We welcome your inquiries and look forward to providing you the same high quality service we have delivered for 40 years.

Our Partners
Aerofin Corporation
CCI Thermal Technologies Inc.
CMS Heat Transfer Division Inc.
Costal Technologies Inc
Munters (Des Champs Division)
Fabsco Fin-Air, LLC
R.W. Holland, Inc.
Precision Cooling Towers
Premium Process Equipment (PPE)
Sigma Thermal
Sondex Inc
Thermo Systems Technology
Turner Envirologic