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Takagi T-D2-OS-NG
Takagi T-D2-OS-NG
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Takagi T-D2 - 5.5 GPM at 60° F Rise - 0.80 UEF - Gas Tankless Water Heater - Outdoor

Model:

T-D2-OS-NG

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Takagi T-D2 - 5.5 GPM at 60° F Rise - 0.80 UEF  - Gas Tankless Water Heater - Outdoor
Takagi T-D2 - 5.5 GPM at 60° F Rise - 0.80 UEF - Gas Tankless Water Heater - Outdoor
Model: T-D2-OS-NG
Was $825.00
Product Discontinued
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$205.00
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Features

Fuel

Natural Gas

Location

Outdoor

# of Showers

2.6

UEF

0.80

    Takagi has been delivering innovative residential and commercial hot water solutions for over 60 years. Their line of tankless water heaters are unmatched in quality and diversity, providing the perfect hot water solution for any situation. The T-D2-IN-P is NSF certified and features a commercial-grade copper heat exchanger designed to run efficiently and reliably. With an included remote control and the ability to link up to 4 units, the T-D2-OS-N is the perfect answer to all your residential or commercial hot water problems.
  • Heavy Duty Heat Exchanger
  • The heat exchanger is built out of commercial-grade copper, providing much better heat transfer than standard stainless steel and designed to be more resilient towards corrosion. Takagi water heaters are built to last and save you money in the process.
  • Multiple Safety Features
  • T-D2 models come with a long list of safety features standard. These include: built in freeze protection, manual reset hi limit, an overheat cutoff fuse, inlet and outlet thermistors to monitor temperatures, and a built-in flame sensor.
  • Low NOx Emission Standard
  • The T-D2 line all qualify for low NOx emissions requirements. This means that these water heaters will save you money while also preserving the environment.
  • Installation and Control Options
  • Takagi outdoor heaters come standard with an included remote control. Additionally, T-D2 come with the Easy-Link option to connect four units with no additional parts or accessories.
California residents see
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
For more information go to: www.p65Warnings.ca.gov

Specifications

T-D2-OS-NG
specs product image PID-70548
General Information
Type
Tankless Water Heater
Medium Learn More
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Heat Exchanger Material
Copper
Fuel Type Learn More
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type Learn More
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Non-Condensing
Vent Type Learn More
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Outdoor (No Venting)
Storage Type
Tankless
Mount Type
Wall
Installation Location
Outdoor
Maximum Altitude
6000 Feet
Includes Pump
No
UPC
671657108311
Additional Model Numbers

T-D2-OS-N, T-D2-OS-NG

Performance
Maximum Input Capacity Learn More
Maximum Input Capacity
The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
199000 BTU
Minimum Input Capacity
11000 BTU
Flow Rate at 40F Temperature Rise Learn More
Flow Rate at 40F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
8.3 GPM
Flow Rate at 50F Temperature Rise Learn More
Flow Rate at 50F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
6.9 GPM
Flow Rate at 60F Temperature Rise Learn More
Flow Rate at 60F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
5.5 GPM
Flow Rate at 70F Temperature Rise Learn More
Flow Rate at 70F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
4.8 GPM
Uniform Energy Factor Learn More
Uniform Energy Factor
Uniform Energy Factor (UEF) is a measurement of water heater energy efficiency. The higher the energy factor, the more efficient the water heater.
0.80
Minimum Flow Rate
0.5 GPM
Flow Rate at 77F Temperature Rise
4.2 GPM
Low NOx Emissions Learn More
Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Low NOx appliances emit less than 40 ng/J (nanogram per Joule) of NOx. Learn More
Yes
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/4 Inch
Cold Water Inlet
3/4 Inch
Hot Water Outlet
3/4 Inch
Product Height
20 1/4 Inches
Product Width
13 3/4 Inches
Product Depth
9 1/2 Inches
Product Weight
39 Pounds
Certifications
CSA Listed
Yes
AHRI Certified
Yes
NSF Certified Learn More
NSF Certified
The National Sanitation Foundation has developed public health standards and certification programs to protect the world's food, water, consumer products and environment.
Yes
AHRI Reference Number
4397470
Warranty Information
Parts Warranty Learn More
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Heat Exchanger Warranty
15 Years

Reviews

(14)
Takagi T-D2-OS-NG Reviews & Ratings
Customer Rating
4.86
(14 Ratings)
5
(12)
4
(2)
3
(0)
2
(0)
1
(0)
Verified Buyer
Verified Buyer
Works great, have it installed over 2 months now
By Kenneth D. 
Northwood, New Hampshire
Purchased 01/28/2020 | 
Review Posted 04/11/2020 
Easy installation
Kenneth D. Recommends This
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Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3M-DV-P.
Was this review helpful?
Rating Breakdown
Features
4/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
4/5
icon-review-marker
Verified Buyer
Verified Buyer
I like this water heater.
By Madoud A. 
Lagrange ga, Georgia
Purchased 01/20/2020 | 
Review Posted 03/26/2020 
I bought one of this 4 month ago l like it. We are 3 adult and no one have complain yet. Then is greater than storing hot eater until it is needed.
Madoud A. Recommends This
Was this review helpful?
Rating Breakdown
Features
4/5
icon-review-marker
Quality
4/5
icon-review-marker
Performance
4/5
icon-review-marker
Value
4/5
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Pros:
Easy To Use, Quiet, Light Weight
Verified Buyer
Verified Buyer
Excellent choice for replacement
By Taejin S. 
Fullerton, California
Purchased 01/17/2020 | 
Review Posted 02/10/2020 
Easy to i stall & use. Compact and neat.
Taejin S. Recommends This
What's a Related Review? Learn More
Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3-DV-N.
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
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Verified Buyer
Verified Buyer
This unit works great, seems to be quality and is priced right
By Dean M. 
Mahwah, New Jersey
Purchased 12/24/2019 | 
Review Posted 01/19/2020 
This was an easy choice when replacing our 15+ year old direct vent tank unit. Same price or cheaper. Takes up less space and easy to install. Screw it to a wall and make your water and gas connections. The hardest part is running at 3" PVC line out a sidewall.
Dean M. Recommends This
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Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3S-DV-N.
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Verified Buyer
Verified Buyer
Takagi
By William C. 
Kuna, Idaho
Purchased 12/23/2019 | 
Review Posted 01/19/2020 
Only had it for a couple of weeks but so far it has performed higher than my expectations. I guess time will tell after a few years.
William C. Recommends This
What's a Related Review? Learn More
Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3M-DV-N.
Was this review helpful?
Rating Breakdown
Features
4/5
icon-review-marker
Quality
4/5
icon-review-marker
Performance
4/5
icon-review-marker
Value
5/5
icon-review-marker
Verified Buyer
Verified Buyer
Second Takagi
By Howard H. 
Merrimac, Wisconsin
Purchased 12/17/2019 | 
Review Posted 01/16/2020 
I purchased a Takagi tankless water heater 4 years ago and just purchased a second one for our lake home! Absolutely the best value for the money you can buy! Stop thinking about making the switch and do it! Unlimited supply of hot water when you need it. I will only buy a Takagi tankless water heater from now on!
Howard H. Recommends This
What's a Related Review? Learn More
Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3-DV-P.
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Verified Buyer
Verified Buyer
Great boiler at an amazing price.
By Dean R. 
Winsted, Minnesota
Purchased 02/03/2019 | 
Review Posted 03/18/2019 
Great boiler - super easy to install. Run 20 psi in your system at a minimum in boiler application.

Would make a perfect whole house boiler for house of 4 or so.

Easy controls and nice touch screen.
Dean R. Recommends This
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*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-K4-IN-P.
Was this review helpful?
Rating Breakdown
Features
4/5
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Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Excellent
By Daniel D. 
Flint, Michigan
Purchased 02/05/2019 | 
Review Posted 02/28/2019 
Easy to install works great
Daniel D. Recommends This
What's a Related Review? Learn More
Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3M-DV-N.
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
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Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Takagi Tankless water heater
By Peter D. 
Friday Harbor, Washington
Purchased 12/23/2018 | 
Review Posted 01/17/2019 
The unit arrived safely and on time, well packed, and was easily installed. I should have bought this years ago as I can now fill the bath tub in the house.
Peter D. Recommends This
What's a Related Review? Learn More
Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3-DV-P.
Was this review helpful?
Rating Breakdown
Features
5/5
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Quality
5/5
icon-review-marker
Performance
5/5
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Value
5/5
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Verified Buyer
Verified Buyer
Awesome in northern climate
By Scott D 
Green Bay, Wisconsin
Purchased 11/09/2017 | 
Review Posted 12/19/2018 
I was worried it wouldn't be able to give me the 85 degree temperature difference I was looking for in a tank-less water heater but it takes 40 degree lake Michigan water and raises it to 125 with no issues. I tried to find the point it couldn't maintain temperature but even when it's coldest in January and February it holds the temperature when using both our showers, the dish washer, and laundry machine. I am very impressed.
Scott D Recommends This
What's a Related Review? Learn More
Related Reviews
*Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.
This review was originally written for the T-H3-DV-N.
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
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Value
5/5
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How-To Articles

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Takagi T-D2 - 5.5 GPM at 60° F Rise - 0.80 UEF - Gas Tankless Water Heater - Outdoor
Takagi T-D2-OS-NG
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