Office: Des Moines, IA; Refrigeration/Mechanical Product Manager

Years With Dennis Supply: 41

Lines Responsible For: Darwin assists dealers with a wide variety of needs including refrigeration and all areas of HVAC. On the commercial refrigeration side, he assists dealers with design and layout options.

Much of Darwin's day deals with technical issues from a wide variety of products and applications. From compressors to rooftops, Darwin is a tremendous asset.

Office: Council Bluffs, IA; Hydronics

Years With Dennis Supply: 39

Lines Responsible For: Jeff is in Hydronic Sales and maintains much of the hydronics inventory at Dennis Supply, both parts and equipment. He works with contractors on quotes and trouble-shooting service issues.

Before coming to Dennis Supply in 1982, Jeff spent 5 1/2 years in the field focusing on plumbing and hydronics.

Office: Council Bluffs; Director of Hydronics/Geothermal Sales

Years With Dennis Supply: 2

Lines Responsible For: Bosch and Century geothermal units and supplies. Lochinvar and Bell & Gossett boilers, pumps and supplies. Heatlink floor radiant heating products.

Office: Des Moines, IA; Sales Manager

Years With Dennis Supply: 3

Lines Responsible For: Supporting the sales efforts and customer support at all 13 of our locations.

Throughout his Wholesale HVAC career his responsibilities have included outside sales, branch manager, purchasing, technical service advisor, product/technical training, and manufacturer’s representative.

Office: Lincoln, NE; HVAC Product Manager

Years With Dennis Supply: 7

Lines Responsible For: Allied Commercial, Airease, Ducane, Mitsubishi Simon has 17 years of HVAC industry

He specializes in HVAC but has been heavily involved with refrigeration, geothermal and IAQ products.