HTP offers 1 condensing water heaters model in the lineup we track. This page is the HTP-specific cut of the broader Condensing Water Heaters water heaters category — same product class, narrowed to the HTP catalog only.
HTP (Heat Transfer Products) — combi boilers, Phoenix direct-fired, Versa-Hydro hybrid.
For the complete HTP lineup across all sub-types and capacities, see the HTP Water Heaters hub.
If you're cross-shopping condensing water heaters beyond HTP, the following brands also ship in this category:
Condensing water heaters extract additional heat from the flue gas before exhausting it — increasing UEF efficiency from typical 0.62–0.67 (atmospheric) up to 0.84–0.97 (condensing). The technology requires sealed-combustion 2-pipe PVC venting and a condensate drain (the recovered heat condenses water vapor from the flue gas, which must drain to a floor drain or condensate pump).
For typical 3–4 person households on natural gas:
Condensing tank vs atmospheric tank: $80–$120/year savings. Over a 12-year...
For the complete condensing buyer's guide (all brands, full comparison framework), see the Condensing Water Heaters category hub.
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