McDonald Supply - Decorah is a full line plumbing and HVAC distributor in Iowa. We feature quality products by reliable manufacturers dedicated to providing performance, safety, and solutions to the professional plumbers, heating and cooling dealers, and the industry.

We feature a design showroom to assist you in the selection and layout of your project. Our offerings include a full range of products and services to ensure customer satisfaction, comfort, and reliability.  

We are committed to serve you by having a trained and experienced staff to offer a full range of solutions to your plumbing system and heating/ air conditioning needs.
Delivery service is available to your location or jobsite. Our goal is to respond to your problems promptly, working hard to earn your trust.

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803 Commerce Street, Decorah, IA  52101
Phone: 563-382-4255     FAX: 563-382-3749
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