Call Toll Free Number 1.888.726.9752  | Open 7 Days a Week

Takagi T-H3S-DV-N (Natural Gas)

Product Overview

Takagi T-H3S-DV-N (Natural Gas) Tankless Water Heater with Secondary Condensing Heat Exchanger

180,000 BTUs and up to 140 degrees F, Electronic Ignition, PVC Exhaust, Energy Star, 3/4" NPT Gas Line, Heating Applications, Recirculation, Glycol

In stock


Eligible for Free Ground Shipping on orders over $199

Our Price:

Regular Price: $1,699.00

Special Price: $1,065.00


Call Us 24/7 at 888.726.9752 with questions or to place a phone order!


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

More Views

  • Takagi T-H3S-DV-N (Natural Gas) Whole-House Tankless Water Heater
Save 10% (up to $300) with the 2011 Federal Tax Credit for qualified Gas Tankless Water Heaters.
  • Takagi T-H3S-DV-N Tankless Water Heater

    The Takagi T-H3S-DV-N Natural Gas Condensing tankless water heater is a top performance, fully condensing Ultra-Low NOx gas tankless water heater from Takagi. This 180,000 BTU heater is designed for commercial or residential applications and can deliver hot water up to 140 degrees F with a 8 GPM flow rate. The wired remote thermostat controller TM-RE40 will allow the heater to reach temperatures up to 140 degrees F.

    This Takagi gas tankless water heater is Energy Star rated and can produce enough hot water for 2 major applications in most homes.

    Unlike traditional non-condensing models, condensing technology captures heat from the exhaust gas and uses it to preheat the incoming cold water. This increases efficiency and reduces emissions -- Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm).

    This heater features an electronic ignition system and can vent through either 3 inch or 4 inch diameter PVC/stainless steel vent pipe either through the side wall or up through the roof. A PVC concentric venting option is available.

    This heater comes with built-in freeze, overheat and surge protection. The T-H3S-DV-N requires a minimum of a 3/4" gas line. The T-H3S-DV-N can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor systems, and/or domestic & heating applications. Glycol mix can be run through the heater but please see installation manual for proper products to use and mixing percentages.

    For all outdoor installations please see the Takagi T-H3S-OS-N outdoor unit. Please be aware the outdoor units are designed for warmer southern climates that normally do not freeze.
  • Brand Takagi
    Model Takagi T-H3S-DV-N
    Manufacturer's Part Number (MPN) T-H3S-DV-N
    Condensing Unit Yes
    Voltage (Volts) 120
    Product Dimensions (H" x W" x D") 22.50 x 17.75 x 10.75
    Product Weight (Lbs) 58
    Shipping Weight (Lbs) 58.0000
    Capacity @ 35 Deg F Temp Rise (GPM) 8
    Capacity @ 45 Deg F Temp Rise (GPM) 7
    Capacity @ 55 Deg F Temp Rise (GPM) 6.25
    Maximum Input (BTUs) 180000
    Minimum Input (BTUs) 19500
    Maximum Output (BTUs) 180000
    Minimum Output (BTUs) 19500
    Altitude Test (Ft) 10,100
    Temperature Range (Deg F) 100 - 140
    Venting Options PVC, CPVC, ABS, Cat III Stainless Steel
    Venting Diameter (Inches) 3 or 4
    Vent Maximum Run (Ft) 100
    Water Connections (Inches) 3/4 NPT
    Water Pressure Rating (PSI) 30 - 150
    Energy Factor 0.95
    Heater Style Tankless
    Activation Flow Rate (GPM) 0.5
    Electrical Requirements (AMPS / V) <=2.5 / 120
    BTU Rating 180000
    Application Commercial,Residential
    Indoor/Outdoor Installation Indoor
    Product Type Whole House
    Remote Control Wired Remote Control TM-RE40 Included
    Color White
    Warranty 15-year limited warranty on the heat exchanger (10-year if used in recirculating applications); 5-year limited warranty on all other parts; 1-year labor warranty
  • Write Your Own Review

    You're reviewing: Takagi T-H3S-DV-N (Natural Gas)

  • Warranty

    Takagi gas tankless water heaters are warranted by the Manufacturer (Takagi) through Takagi Corp. will furnish a replacement heat exchanger and will furnish a replacement of any other part which fails in normal use and service within the applicable periods specified below, in accordance with the terms of this warranty. The Takagi Corp. replacement will be warranted for the unexpired portion of the original warranty.

    The Heat Exchanger
    If the heat exchanger fails within Fifteen (15) years after the original installation and operation, Takagi Corp. will furnish a replacement heat exchanger. However, if the water heater is used within an approved hot water recirculation and supplied with circulated water, this heat exchanger warranty is limited to ten (10) years from date of original installation and operation. If the water heater is installed in other than a single family dwelling, commercial use or used for heating applications this heat exchanger warranty is limited to ten (10) years from date of original installation and operation.

    This warranty will not apply:
    1. to defects or malfunctions resulting from failure to properly install, operate or maintain the unit in accordance with the printed instructions provided;
    2. to damage or abuse, accident, neglect or freezing and other acts of nature;
    3. damages due to unauthorized alterations, attachments, and/or repairs.;
    4. damages due to a lack of maintenance (e.g. water filter, water treatment system, vent blockage, etc.);
    5. to defects or damage cause by any attachment or modification, including any energy-saving device;
    6. to damage resulting from scale deposits and/or highly mineralized / unsoftened water supply.

    All Other Parts
    If any other part fails within five (5) years after original installation and operation, Takagi Corp. will furnish a replacement part free of charge.

    Service Labor Costs
    The manufacturer will provide for reasonable labor charges associated with warranty repairs or replacements within one (1) year from the date of purchase. The manufacturer will only pay directly to the service provider.

    Additionally, all warranty claims and warranty service must be authorized and approved by the manufacturer.

    How to Make a Claim
    Any claim for warranty parts or labor must be made to to the manufacturer.l dealer or distributor:

    500 Wald St.
    Irvine, CA 92618
    Tel. 1-888-882-5244

    The damaged or defective item must be made available in exchange for the replacement.

    No one is authorized to make any other warranties on behalf of Takagi Corp.. It is expressly understood that the replacement warranty of Bosch Thermotechnology Corp. shall be in lieu of any and all other warranties, express or implied, including warranties of merchantability or fitness for a particular use or purpose, and further that Takagi Corp. shall not be liable for any loss or damage directly or indirectly arising from the use of the hot water heater, or for any consequential damages arising from such use (including damages from water leakage). Takagi Corp. sole liability with respect to any defect shall be for the replacement of the defective part(s). Some states do not allow such limitations and exclusions, so the above may not apply to you.

    This warranty gives specific legal rights. You may also have other rights which vary from state to state.
  • Downloads