Triangle Tube Smart 40 Indirect Water Heater

Triangle Tube Smart 40 Indirect Water Heater

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SMART 40 - The Smart Choice in Indirect Fired Water Heaters by Triangle Tube. This is a 40-gallon indirect water heater

The SMART 40 Indirect Fired Water Heater heats more hot water with less fuel for the energy conscious consumer. This is a stainless steel indirect fired water heater. This has Exclusive "Tank-in-Tank" Design and it is a Self-cleaning/ self-descaling heat exchanger. 

Smart 40 is Efficient and Dependable, it is heated by the hot water from your boiler. As your home is being heated, your domestic hot water is being heated at the same time, thereby, consuming less fuel and conserving energy. Smart 40 is 3 Times faster than conventional gas or electric water heaters and has a Lowest pressure drop in the industry.  The average life span of a SMART Series Indirect Fired Water Heater exceeds 20 years which is two or three times the average life of a conventional gas, oil or electric water heater.


Performance Specifications: 

  • Boiler Output Btu/Hr : 112,000
  • 1st Hour Recovery (gal) : 180
  • Continuous Flow (gal) : 150
  • Peak/Flow (gal/10 min.) : 50



  • Boiler Supply/Return : 1"
  • Domestic Inlet/Outlet : 3/4"
  • Domestic Capacity (gal) : 36
  • Heating Water Capacity (gal) : 6
  • Diameter : 22"
  • Height : 46"
  • Heat Surface (Sq.ft) : 16 
  • Empty Weight (lbs) : 135


Technical Documentation


Product Information

Performance Data

Suggested Specifications

Installation and Maintenance Manual

Warranty Information

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Disclaimer: Must be installed by a licensed contractor or warranty is void.


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Customer Reviews

Based on 1 review
Louis Dominguez
Triangle Tube Smart 40 Indirect Water Heater

Seems good so far and easy to follow directions