Takagi Gas 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 Gas Water Heaters: buyer's guide
Takagi offers 18 gas water heaters models in the lineup we track. This page is the Takagi-specific cut of the broader Gas 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 Gas 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 Gas water heaters brands
If you're cross-shopping gas water heaters beyond Takagi, the following brands also ship in this category:
About Gas Water Heaters water heaters
Natural gas water heaters dominate US residential water heating where natural gas service is available — roughly 49% of US homes have gas water heaters. They split into tank (40/50/75/80-gallon storage with gas burner) and tankless (on-demand condensing) sub-types, with venting variations (atmospheric chimney, power-vent PVC, direct-vent sealed combustion) that determine which install scenarios fit.
- Operating cost: natural gas is consistently the cheapest residential water heater fuel by per-BTU pricing in most US markets — typically 50–60% of equivalent electric resistance cost
- Recovery speed: a 40,000 BTU gas burner delivers ~40 GPH at 90°F rise — tw...
For the complete gas buyer's guide (all brands, full comparison framework), see the Gas Water Heaters category hub.
Other Takagi filters
Explore Takagi from other angles: