At Service Reps., Inc. we have put a lot of thought into how we can make it easier for our customers to select the products that are just right for their applications. The tools and sheets provided below will help you in many different sizing, application, and selection scenarios. If you need more assistance, please give us a call and we will be happy to help you with your project!

Engineering Page Tools and Helpful Sheets


Caspak Sizing Software

Piping Diagrams


Heat Loss Diagram

Minimum Insulation Sheet


Unit Selection Assistant

Navien can help you decide which model is right for you based on the ground water temperature where you live and information you provide. This is intended as a guide only; it is up to the contractor or engineer to determine the right model, components, accessories and particular system being installed. It is also engineer or contractor’s responsibility to ensure the installation is in accordance with all local building codes.


HydroMax Siphonic Design Requirements

HydroTechnic Hydraulic Calculation Program

HydroTechnic allows users to select their chosen units of measurement to draw, design and calculate in either metric or imperial (“English”) feet and inches.
After the Design Engineer has determined design rainfall rate and calculated roof areas, they should determine roof drain positions and volume of water per drain to be drained. From this point the design engineer will design the pipe routes required and draw these pipe routes into HydroTechnic.


Since the inception of Service Reps we have been forging strong relationships with our manufacturers, wholesalers, and customers. We are proud in the fact that Service Reps has maintained many of the relationships that Paul fostered Thirty-Five Plus years ago. “Service” is branded in our name and will continue to be the lead consideration in everything we do!


Sloan Optima® Faucets

Sloan Optima® Faucets Redesigned to save time and money. Smarter water management made simple. Introducing the new, improved Optima® line — a plumber-friendly powerhouse that reduces the time to install, service and maintain faucets by 50% or more. Sync it...

Sloan Announces New SloanStone® Sink Designs

Solid Surface SloanStone® Sinks Three new models provide options for your high-traffic restrooms. Thoughtfully designed sinks that exceed all demands. SloanStone® Sink Systems offer the ultimate solution for any high-traffic commercial restroom. These...


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Omaha, Nebraska


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