Experience Counts! Steve Darling, Certified in Plumbing Engineering and Owner of PDI has been actively employed in the plumbing industry since 1978, designing plumbing and other mechanical systems nationwide. In September 2003, Plumbing Design & Installation, Inc. opened its doors to provide quality, effective plumbing design & installation services to commercial and residential customers in western South Dakota.

They are currently members of the South Dakota Association of Plumbing, Heating & Cooling Contractors (SDPHCC) and the Construction Industry Center (CIC).


In-Floor Heating Systems –
Comfortable & Cost Efficient

In-floor heating systems are a great investment for homes, shops and offices by providing higher levels of comfort and lower operating costs during the heating season. They are discreet and when installed properly they offer the most efficient and environmentally-friendly heating option available to the discriminating consumer.


Snow Melt Systems

Snow melt systems provide greater safety for visitor and residents alike; whether installed in residential or commercial sidewalks and driveways.


Continuous Flow Water Heaters

Continuous flow water heaters can provide all the hot water needed in a building. Whether in homes or commercial buildings, these systems save money by heating water only when it is needed, eliminating the need to heat the large storage tank!


Specialty Equipment

Restaurants are always exciting projects to work on and the one at Mount Rushmore is certainly no exception! Each restaurant presents its own unique needs, challenges and space concerns. Oftentimes, a great deal of specialty equipment needs to be confined within a small area, yet be easily accessible for cleaning and maintenance.


Quality, Cost Effective
Plumbing Systems

Hotels such as those completed in Keystone, SD were perfect for the design- build process. PDI worked closely with the owners to provide a quality plumbing system for the lowest possible cost.


Mechanical Rooms

Mechanical rooms contain the ‘heart’ of the heating system. The challenge comes when old, outdated equipment (packed in the basement of a facility) needs to be removed and replaced with new, high efficiency equipment.

Manufacturer Brands Specified and Sold by PDI

• American Standard • AO Smith • Armstrong • Bell & Gossett • Crane • Delta • Eljer • Moen • Kohler • Lasko • Moen • Navien • Rinnai • Watts, Zoeller, Wilkins • Simmons • State • Taco • Zurn

Contact Us Today!

We are excited and anxious to provide you with quality, cost effective, timely solutions for all your commercial and residential plumbing needs. We have the expertise and experience to meet your special requirements. Contact us today with your questions and specifications and we will be happy to give you the answers you need for your project.

We look forward to hearing from you!


2740 Haines Avenue - Rapid City, SD 57701 (605) 787-PIPE (7473) Fax: (605) 787-5847


The Plumber Protects the Health of the Nation