HOT ! Takagi T-H3S-DV-N Indoor Tankless High Efficiency Condensing Water Heater (NG)

Takagi T-H3S-DV-N Indoor Condensing Tankless Water Heater (Natural Gas)

The Takagi T-H3S-DV-N is a high-efficiency 180,000 BTU indoor tankless water heater designed for residential applications that demand performance, reliability, and compact installation. As part of Takagi’s H3 series, the T-H3S-DV-N delivers continuous hot water with lower energy consumption thanks to its advanced condensing technology.

This unit is ideal for small to mid-size homes or properties with moderate simultaneous hot water usage. Featuring a stainless steel secondary heat exchanger, ultra-low NOx compliance, and flexible direct-vent installation, it is one of the most popular mid-tier condensing tankless systems on the market.

✔ Key Features

• 
  180,000 BTU Natural Gas – Powerful output for up to 2–3 bathrooms depending on climate.


• 
  Condensing Technology – Higher efficiency, lower gas consumption, and reduced utility costs.


• 
  Stainless Steel Secondary Heat Exchanger – Corrosion-resistant and long-lasting.


• 
  Indoor Direct-Vent Installation – Uses PVC, CPVC, polypropylene, or Category III stainless venting.


• 
  Continuous Hot Water – Never run out, even with multiple fixtures in use.


• 
  Ultra-Low NOx – Fully compliant with California emission standards.


• 
  Compact Wall-Mount Design – Ideal for tight mechanical rooms or upgrades.


• 
  Energy Star Certified – Meets modern efficiency requirements.

Specifications

What\'s Included

• Takagi T-H3S-DV-N Tankless Water Heater (Natural Gas)


• Installation & Operation Manual


• Mounting Hardware


• Warranty Documents

Recommended Add-Ons

• Isolation Valve Kit (Hot & Cold Service Valves)


• Condensate Neutralizer Kit


• 2\" or 3\" PVC/CPVC Venting Kit


• Water Filtration / Scale Prevention Kit


• Condensate Pump (if drain is not gravity-fed)

Why Choose the T-H3S-DV-N?

If you’re looking for a reliable, mid-size condensing tankless water heater, the T-H3S-DV-N is an excellent choice. It provides efficient, continuous hot water with quieter operation and a smaller footprint than standard tank heaters. Ideal for homes with moderate demand, remodels, and energy-saving upgrades.