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

Years With Dennis Supply: 40

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: Omaha, NE; Director of Hydronic Sales

Years With Dennis Supply: 21

Lines Responsible For: Lochinvar, Bell & Gossett, Watts Radiant, Heat Transfer Products, Amtrol.

He daily assists our customers with product selections and technical assistance with the major manufactures such as: Burnham, Tekmar, Armstrong pumps, and Raypak to mention just a few. Greg has been an ASHRAE member since 1978.

Office: Sioux City, IA; Operations Manager/Service Director

Years With Dennis Supply: 15

Lines Responsible For: Keith’s title Operations Manager/Service Director and he offers service and troubleshooting support for the Nortek, Allied and Mitsubishi product lines. Other responsibilities are service training, warranty support and OEM parts inventory management.

Keith is a NATE certified Nortek Service Adviser, Allied Service representative lever 4 and Mitsubishi Diamond Service Group technical adviser.

Office: Council Bluffs, IA; Hydronics

Years With Dennis Supply: 38

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: Lincoln, NE; HVAC Equipment Manager

Years With Dennis Supply: 7

Lines Responsible For: Allied Commercial, Airease, Ducane, Mitsubishi

Mike is the HVAC Product Manager for Dennis Supply. He specializes in controls and is our commercial equipment estimator.

Office: Council Bluffs; Hydronics/Geothermal Specialist

Years With Dennis Supply: 1

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: 2

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.