Takagi T-H3-DV-N Indoor Tankless High-Efficiency Condensing Water Heater (Natural Gas)

Takagi T-H3-DV-N Indoor Condensing Tankless Water Heater (Natural Gas)

The Takagi T-H3-DV-N is a top-tier, high-efficiency tankless water heater designed for residential or light-commercial applications. With 199,000 BTU input and condensing technology, this unit delivers continuous, on-demand hot water while maximizing energy efficiency and reducing utility costs.

Built with a commercial-grade copper primary heat exchanger and a stainless steel secondary exchanger, the T-H3-DV-N is designed for durability and long-term performance. The unit meets ultra-low NOx emissions requirements and is certified for high-altitude use (up to 10,100 ft), making it ideal for both city and mountain installations.

🌡️ Key Benefits & Features

• 199,000 BTU Natural Gas input — powerful enough for whole-house hot water, multiple bathrooms, showers, appliances.
• Condensing technology with dual heat exchangers (copper & stainless) — high efficiency, long lifespan, low maintenance.
• Indoor, direct-vent design — flexible venting options using PVC, CPVC, polypropylene, or stainless Category III/IV venting. :contentReference[oaicite:2]{index=2}
• 0.93 Uniform Energy Factor (UEF) — efficient operation and energy savings. :contentReference[oaicite:3]{index=3}
• Compact and wall-mountable — dimensions 22.50″ H × 17.75″ W × 10.75″ D; weight ~59 lbs. :contentReference[oaicite:4]{index=4}
• Supports up to 10.0 GPM flow (depending on inlet water temperature) — ample flow for multiple fixtures. :contentReference[oaicite:5]{index=5}
• Ultra-Low NOx emissions — compliant with CA and national air-quality standards. :contentReference[oaicite:6]{index=6}
• Flexible multi-unit linking (up to 4 units without controller, up to 20 with multi-unit controller) — good for large or commercial applications. :contentReference[oaicite:7]{index=7}
• Comes with built-in controller and diagnostics — easy install and maintenance.

📊 Specifications

📦 What’s Included

• Takagi T-H3-DV-N Unit (Natural Gas)
• Installation manual & paperwork (warranty, spec sheet)
• Factory-installed power cord & control panel
• Hardware pack for mounting / installation

🛒 Recommended Add-Ons / Accessories (Sold Separately)

• Isolation valve / shut-off kit (hot & cold service valves)
• Condensate neutralizer kit (for condensing drain line)
• Vent kit (2″ or 3″ PVC/CPVC or appropriate stainless venting) — ensure compliant venting for installation area
• Water filter / scale-reduction filter (especially in hard-water areas)
• Multi-unit controller (for linking multiple units in large homes or buildings)
• Remote temperature controller / thermostat (if required)

⚠️ Why Choose This Unit

If you’re looking for a powerful, reliable, and efficient whole-house hot water solution — whether for residential or light-commercial applications — the Takagi T-H3-DV-N delivers superior performance, long-term durability, and compliance with modern energy and emissions standards. Its combination of condensing efficiency, high flow, compact design, and flexible venting make it a top choice for new installs, replacement jobs, and large households.