Takagi Tankless Water Heaters
Takagi filters
Takagi T-K4-IN-NG Non-Condensing Tankless Water Heater
Takagi T-KJr2-IN-NG Compact Tankless Water Heater
Takagi T-H3-OS-N Outdoor Condensing Tankless Water Heater
Takagi T-D2-IN-NG Indoor Condensing Tankless Water Heater
Takagi T-H3-DV-P Indoor Condensing Tankless Water Heater (Propane)
Takagi T-D2-OS-NG Outdoor Condensing Tankless Water Heater
Takagi T-H3J-DV-N Junior Condensing Tankless Water Heater
Takagi T-H1-DV-N Compact Condensing Tankless Water Heater
Takagi T-D2-IN-LP Indoor Condensing Tankless Water Heater (Propane)
Takagi T-T2-IN-NG Indoor Commercial Condensing Tankless
Takagi T-T1-OS-NG Outdoor Commercial Tankless Water Heater
Takagi T-K4-OS-NG Outdoor Non-Condensing Tankless Water Heater
Takagi T-K4-IN-LP Indoor Non-Condensing Tankless Water Heater (Propane)
Takagi T-M50 Mid-Range Condensing Tankless Water Heater
Takagi TK-1 Legacy Non-Condensing Tankless Water Heater
Takagi T-KJr2-OS-NG Outdoor Compact Tankless Water Heater
Takagi T-KJr2-IN-LP Indoor Compact Tankless Water Heater (Propane)
Takagi Tankless Water Heaters: buyer's guide
Takagi offers 18 tankless water heaters models in the lineup we track. This page is the Takagi-specific cut of the broader Tankless Water Heaters water heaters category — same product class, narrowed to the Takagi catalog only.
About Takagi
<p>Of the brands serving the US water heaters market, Takagi carries unusual depth: multiple price tiers, multiple form factors, and a track record measured in decades. Founded in Japan, Takagi has earned its way into nearly every water heaters-buying conversation by combining catalog breadth with a service network that translates into real-world reliability. Below is the complete current catalog, structured by sub-type and price tier; the overview that follows orients you to where Takagi is strong, where competitors edge it out, and which specific Takagi model is right for your install.</p>...
For the complete Takagi lineup across all sub-types and capacities, see the Takagi Water Heaters hub.
Takagi Tankless Water Heaters models we track
- Takagi T-H3-DV-N Indoor Condensing Tankless Water Heater (T-H3-DV-N) — 10 GPM Takagi condensing tankless. 15-year heat exchanger warranty.
- Takagi T-K4-IN-NG Non-Condensing Tankless Water Heater (T-K4-IN-NG) — Long-standing Takagi T-K4 — non-condensing 8 GPM tankless.
- Takagi T-KJr2-IN-NG Compact Tankless Water Heater (T-KJr2-IN-NG) — Compact T-KJr2 — entry-tier tankless for smaller homes.
- Takagi T-H3-OS-N Outdoor Condensing Tankless Water Heater (T-H3-OS-N) — Outdoor variant of the T-H3 flagship — 10.0 GPM condensing tankless, weather-sealed cabinet for exterior wall-mount. No interior venting required. Common Southe...
- Takagi T-D2-IN-NG Indoor Condensing Tankless Water Heater (T-D2-IN-NG) — T-D2-IN — newer-generation condensing tankless. 10.0 GPM, 199k BTU, PVC venting, 15-year heat exchanger warranty. Direct competitor to the T-H3 with updated con...
- Takagi T-H3-DV-P Indoor Condensing Tankless Water Heater (Propane) (T-H3-DV-P) — Propane variant of the T-H3-DV flagship — 10.0 GPM condensing tankless for LP gas installs. Same chassis as the NG version with LP gas valve and orifice. Common...
- Takagi T-D2-OS-NG Outdoor Condensing Tankless Water Heater (T-D2-OS-NG) — Outdoor variant of the T-D2 — 10.0 GPM condensing tankless for warm-climate exterior wall-mount. No venting required, freeze protection built in.
- Takagi T-H3J-DV-N Junior Condensing Tankless Water Heater (T-H3J-DV-N) — Junior variant of the T-H3 — 7.0 GPM condensing tankless. Smaller flagship for 1-2 bath homes. PVC venting, 15-year heat exchanger warranty, lower upfront cost...
Other Tankless water heaters brands
If you're cross-shopping tankless water heaters beyond Takagi, the following brands also ship in this category:
- Rheem Tankless
- AO Smith Tankless
- Bradford White Tankless
- Rinnai Tankless
- Ruud Tankless
- Navien Tankless
- Noritz Tankless
- Bosch Tankless
About Tankless Water Heaters water heaters
Tankless water heaters (also called on-demand or instantaneous water heaters) heat water as it flows through the unit, eliminating the storage tank entirely. The trade-offs are clear: endless hot water, lower operating cost over a long ownership horizon, and a much smaller footprint — at the cost of higher upfront price and more demanding install requirements (gas line sizing, venting, electrical load). With roughly 1,581 monthly US searches for "tankless water heater," this is one of the most-shopped sub-types in the category.
Tankless splits into two fundamentally different products: gas tankless (condensing or non-condensing) and electric tankless. They serve different households.
Gas tanklessFor the complete tankless buyer's guide (all brands, full comparison framework), see the Tankless Water Heaters category hub.
Other Takagi filters
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