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TH3SDV Indoor High Efficiency Condensing Tankless Water Heater, with Energy Star Rating, 8.0 Max GPM, Erosion Resistant Primary Heat Exchanger, Built-in Temperature Control, and Electronic Ignition

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  • Width: 17.75"
  • Height: 22.5"
  • Depth: 10.25"

This Indoor High Efficiency Condensing Tankless Water Heater features a max GPM is 8.0. Also offers Ultra-Low Nox condensing technology which provides 0.95 energy factor. The primary heat exchanger is constructed of HRS35 Commercial-Grade copper which is more resilient against erosion. In addition to the added durability, this unit is ENERGY STAR qualified. Includes a built-in temperature controller. Available at AppliancesConnection


An industry leader in tankless water heaters since 1952, Takagi has made safety, reliability, and service the cornerstone of their business. For over sixty years, Takagi has been a worldwide producer of the best tankless heaters available, and has a demonstrated commitment to innovation and excellence. Their revolutionary tankless heaters reinvented an industry; today, they're reinventing customer satisfaction with every tankless water heater they sell, each one backed by decades of experience. Takagi, the first tankless water heater company to enter the North American market, offered the first completely-tankless product to feature a thermal efficiency of up to 95%. These amazing efficiency ratings were just the beginning, as Takagi also offered the first direct-vent convertible tankless water heater and the first to utilize the air-fuel ratio rod. This is a legacy of daring, of innovation, and, most importantly, of success. This is what being an industry leader means. This is Takagi.


  • Ultra-Low NOx Condensing Technology
  • Significant Energy Cost Savings - Unprecedented 0.95 Energy Factor
  • ENERGY STAR® Qualified
  • Durable HRS35 Commercial-Grade Copper Primary Heat Exchanger
  • Type 316L Stainless Steel Secondary Heat Exchanger
  • Electronic Ignition - No Pilot Light
  • Indoor Model has Built-in Temperature Controller and Diagnostics
  • Outdoor Model has Temperature Controller and Diagnostics Included
  • Factory-Installed Power Cord Included for Indoor Models
  • Complies with Lead Free Standards
  • Suitable for Commercial Application (T-H3 Models)
  • Easy-Link up to 4 Units with no Additional Parts or Accessories Needed (T-H3 Models)
  • Multi-Link up to 20 Units (T-H3 models only)
  • Internal Freeze Protection System
  • Power Direct Vent Design Provides Flexible venting with PVC, CPVC or ABS Intake


Fuel Type: Other
Usage: Both
Tankless: Yes
Gallons Per Minute: 5 - 7 Gallons
Width: 17.75"
Depth: 10.25"
Height: 22.5"


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  • Brand:Takagi
  • Stock Id:343126
  • Product Number:TH3SDV


  • Fuel Type:Other
  • Tankless:Yes
  • Gallons Per Minute:5 - 7 Gallons


  • Width:17.75"
  • Depth:10.25"
  • Height:22.5"

    Technical Details

  • Usage:Both
  • Weight:60.00 lbs