Dennis Supply Co

Dennis Supply Co has served Des Moines and surrounding Iowa communities since 1934, marking 90 years in the HVAC and refrigeration supply business. With a 3.6-star rating from eight customer reviews, this wholesaler operates as a contractor-only supply house rather than a retail outlet for homeowners. The business maintains regular hours Monday through Friday from 7:30 AM to 5 PM, with the main location in Des Moines serving professionals across the metro area and beyond.

What distinguishes Dennis Supply from standard HVAC distributors is their focus on specialized high-pressure connection systems and commercial-grade package units. The RLS Rapid Locking System allows technicians to join copper tubing in under ten seconds without hot work permits, a feature that reduces labor costs and worksite hazards. Their Allied Gas/Electric package units range from 2 to 25 tons, supporting replacement projects for commercial and multi-unit residential applications. The company positions itself as a technology-forward partner for contractors seeking competitive installation solutions.

Customer testimonials reveal how Dennis Supply staff members like Wayne Dennis have earned loyalty by providing cutting-edge equipment recommendations to contractors serving residential and commercial clients. One reviewer notes staff helped source replacement units during an emergency situation, while others describe the team as consistently helpful when technicians visit the warehouse to verify in-stock parts. The positive reviews cite specific staff members and product knowledge, while negative feedback centers on access policies, the business does not serve walk-in customers without contractor credentials.