• Manufacturer: Triangle Tube
  • SKU: SMART40
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$ 1,109.00
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Triangle Tube Smart 40 36 Gal Indirect Hot Water Heater New


Brand new in box & manufacturer direct
Limited 10 year factory warranty
Made in NJ
Authorized Triangle Tube dealer
Free Shipping


Triangle Tube is best known for two things: feats of hydronic innovation and incredibly efficient products. These qualities are intertwined in Triangle Tube's Smart Series Indirect Fired water heaters. The Smart water heaters feature an exclusive "tank-in-tank" design that Triangle Tube has been refining for three decades. To heat domestic water, the outer tank of the Smart 40 fills with boiler water and the surface of the inner tank becomes a heat exchanger. Two inches of polyurethane insulation ensures that your domestic hot water stays hot, and stainless steel construction of the inner tank provides exceptional durability. When it comes to making a decision on your next water heater, the Smart lives up its name.


  • Tank-in-Tank Efficiency
  • Using boiler water as a heat source for the Smart 40 means that whenever your boiler fires it is providing heat not just for your home, but for your water as well.
  • Tank-in-Tank Safety
  • High temperatures prevent the growth of bacteria. High quality stainless steel and Triangle Tube's tank-in-tank design allow your domestic hot water to be stored at higher temperatures than traditional water heaters.
  • Incredible Recovery Rate
  • The large surface area of the inner tank means that water is heated very quickly. Smart Series Indirect Fired water heaters boast a recovery rate up to 300% greater than that of conventional water heaters.
  • Self-Cleaning
  • The inner tank of the Smart 40 is contoured to promote water movement. This design prevents lime build-up in your water heater and keeps it running efficiently.


Type - Indirect Water Heater
Product Line - Smart
Medium  - Hot Water
Fuel Type  - Indirect Fired
Storage Type - Tank
Coils Quantity - 1
Connection Type - NPT
First Hour Delivery  - 270 Gallons
Continuous Recovery Rate - 240 Gallons
Storage Volume - 36 Gallons
Cold Water Inlet - 3/4 Inch
Hot Water Outlet - 3/4 Inch
Supply Connection - 1 Inch
Return Connection - 1 Inch
Product Height - 46 Inches
Product Width - 22 Inches
Product Depth - 22 Inches
Product Weight - 135 Pounds
Shipping Weight - 142 Pounds
ETL Listed- -Yes
ISO Certified - Yes
Parts Warranty  - 1 Year
Vessel Warranty - 10 Years

Limited 10 Warranty by Triangle Tube

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