Introducing the 4PRO Indirect Water Heater

High Quality. Efficient. Easy to Install.

4PRO Indirect Water Heater

The 4Pro Indirect Water Heaters are designed with efficiency as a priority. Built with high-quality stainless-steel materials, allowing for excellent heat transfer and a longer tank life while producing abundant hot water at low operating costs. Not only are they efficient for the homeowner but efficient for the installer with convenient top connections, pre-installed valves, and a standard operating control included in the box.


  • All top connections
  • Stainless Steel tank and coil
  • Drain and relief valves pre-installed and factory tested
  • Standard operating control included
  • Highly insulated to minimize heat loss
  • Available in 30, 40, 50, and 60 Gallon models
  • Limited Lifetime Warranty
  • Made in the USA


Download Full Spec Sheet


Available exclusively through The Granite Group.
Shop all four models in our Online Store:

 TGG #  Description 
  4PROSSIWH30  30 Gallon
  4PROSSIWH40   40 Gallon
  4PROSSIWH50 50 Gallon
  4PROSSIWH60 60 Gallon