Triangle Tube offers 5 indirect water heaters models in the lineup we track. This page is the Triangle Tube-specific cut of the broader Indirect-Fired Water Heaters water heaters category — same product class, narrowed to the Triangle Tube catalog only.
Triangle Tube — Indirect water heaters and boilers.
For the complete Triangle Tube lineup across all sub-types and capacities, see the Triangle Tube Water Heaters hub.
If you're cross-shopping indirect water heaters beyond Triangle Tube, the following brands also ship in this category:
Indirect water heaters don't generate their own heat — they share heat with the home's boiler. A heat exchanger coil inside the storage tank receives hot water from the boiler loop and transfers that heat to the domestic hot water. The boiler does the work; the indirect tank just stores. Common in homes with hydronic space heating (cast-iron radiators, baseboards, radiant floor) where a high-efficiency boiler is already in place.
For the complete indirect buyer's guide (all brands, full comparison framework), see the Indirect-Fired Water Heaters category hub.
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