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Takagi T-D2-OS-NG Outdoor Tankless Water Heater, Natural Gas

Brand: TAKAGI

7 ratings

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Includes TM-RE30 remote
11,000 - 199,000 BTU/hr
0.82 energy factor
10.0 GPM max flow rate
Outside installation only; Includes internal freeze protection

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Customer Rating	(7)	(4)	(131)	(571)	(192)	(4)
Price	From $1,565.27	$1,818.75	$1,500.00	$680.40	$1,666.50	$1,156.00
Sold By	Available from these sellers	Buildcom	YourSupplyStop	Buildcom	Buildcom	General Supply House
Item Dimensions	8.50 x 13.80 x 20.30 inches	22.05 x 14.76 x 33.86 inches	10.00 x 18.50 x 26.00 inches	9.60 x 14.00 x 24.30 inches	18.50 x 11.45 x 31.30 inches	11.25 x 17.75 x 24.88 inches

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Product description

From the Manufacturer

The NEW T-D2-OS model was specifically designed for light commercial applications. The T-D2-OS offers all the features of the "Revolutionary T-K3-Pro" model and now has an outside specific model along with a max flow rate of 10.0 GPM.

Product information

Technical Details

Manufacturer

Takagi

Part Number

T-DF-OS-NG

Item Weight

44.1 pounds

Product Dimensions

8.5 x 13.8 x 20.3 inches

Item model number

T-D2-OS-NG

Is Discontinued By Manufacturer

Size

-1

Color

White

Item Package Quantity

Certification

Energy Star, Certified frustration-free

Batteries Included?

Batteries Required?

Warranty Description

Residential: 12 year heat exchanger, 5 year parts and 1 year labor. Note: Water heaters of any type must be installed by licensed personnel or warranty will be void.

Additional Information

ASIN

B0057X20BC

Customer Reviews

7 ratings

4.4 out of 5 stars

Best Sellers Rank

#765,277 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#719 in Water Heaters

Date First Available

July 8, 2011

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Customer reviews

5 star		59%
4 star		22%
3 star		19%
2 star 0% (0%)		0%
1 star 0% (0%)		0%

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Top reviews from the United States

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saintly

You lose hot water and no customer support.

Reviewed in the United States on September 6, 2018

Verified Purchase

It's noisy... Makes a rumbling sound. Also you lose hot water when the flow of water goes below .5 gpm and the incoming supply is above 78°f which is often the case during the summer here in so Cal. Good luck getting ahold of Takagi for customer service...I was lucky that my plumber knew a guy that used to work for them. That's how I found out about the gpm thing. Do yourself a favor and don't buy this unit.

2 people found this helpful

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Ray Ghigliotty

Forced hot water system usage - works great.

Reviewed in the United States on January 26, 2018

Verified Purchase

Purchased this unit to use in a forced hot water system. Installed the unit per manufacturers instructions. Installed a new thermostat relay, circulating pump, expansion tank and cold water pressure regulator at the same time. Wired and plumbed it all up, flipped the breaker, then the switch and uneventfully, yet right on cue, the unit turned on. Within minutes the house started to get warm. I did need to make a DIP switch adjustment to get the heater to run a little hotter. Wasn't a big deal and the instructions were very clear. I would buy this again in a second.

One person found this helpful

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ISMAEL M. CAMACHO

Make sure you have the correct fittings for ease of installation

Reviewed in the United States on February 27, 2019

Verified Purchase

The simplicity of installation was fast and easy

One person found this helpful

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Alfredo Urquiza

Five Stars

Reviewed in the United States on February 29, 2016

Verified Purchase

Great small Gigante.

One person found this helpful

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Miss Ultra Handy

and I had two bad units in a row

Reviewed in the United States on October 7, 2014

I have had one of these D2 units for about four years. I bought lots of the old units, and I had two bad units in a row. But we are talking over ten years ago, so I don't think it's fair to hold that mess against them. Spoiler Alert: Their warranty support is nasty and they blame everything on you and won't honor their word. But enough about the distant history.

The fact is, the Takagi units are by far the best made, with the best materials, with high-end copper heat exchangers, and they can take anything. They do not break, they just work work work without a problem. Just make sure the filter is cleaned, and you will be happy. If you have hard water, get a softener electronic do-dad that goes around the pipe, and you won't even have to do the yearly scale cleaning.

For all those brochures that tell you, you need a professional installation, well, you don't. It's the easiest thing ever, and a patient handyman with a good "how to do plumbing projects" background can handle it. Especially for the outside units. They are literally installed like this: Screw it on the wall, screw the pipes on, screw the electrical cord on and you are done. Works like a charm.

All you really must have is a properly sized gas line of 3/4" so you get the full but capability and fpm flow. And you need to pressure test your line no matter how large it is, to make sure you're getting enough gas pressure. Often a has line runs too far away from the source to keep the press high enough, so go online and look up the math problem first, figure out how long your gas line can be, and do that. In general, you need to be only about 50 feet of pipe away from the your gas meter. That's generally. If you are 75 feet away, you might need a 1" or 1 1/4" pipe. That's the only trick that I've seen can mess this up.

Otherwise it's fool proof.

I do recommend one upgrade to make this look really slick and professional. It's a LOT more work, carpentry-wise, but if you are installing an outside unit, think about using the recess box. It's about $175 more, but it looks so sleek and finished when you're done, and it also protects the unit from the elements and rom tampering. It fits right inside the wall between most wall joints. Look up photos on line and judge for yourself.

On the other hand, if you are smart, you are installing this thing in an out of the way place that isn't very visible anyway, so just slapping it on the side of the house is ok too.

Assuming you have a good gas line, you can install these outside units in less than half a day. And don't be afraid of attempting to install a new gas line either--it's just a lot of pipe pieces cut to fit with lots of goop at the joints. If you can tighten a goopy joint, you will be fine. Just make sure to put a pressure tester on the ends, pump it full of air for 24 hours, and make sure the pressure needles do not budge to make sure your fittings are screwed tight.

Everybody gets scared of doing gas projects, and that's why they don't go with tankless heaters--most licensed pro's charge $1500 to $3000 to install them. And it's totally worth that, if you do not want to do it yourself, or you think it's above your skill level. I'm just here to say that if you are patient and very handy anyway this is a real no brainer project if you just follow the steps.

Finally, to all the naysayers who make a decision about tankless or tank hot water heaters based on money, I say they're full of head feathers. It's a no brainer: Every human being on the planet wants to take showers, do dishes, take baths, and never ever ever ever ever run out of hot water. Only an idiot would be willing to run out of hot water several times a year just so they could save money. Everybody with a tank knows what it's like to run out of hot water, and it's awful. If you have somewhere to go, you'd pay almost anything to be able to shower right then.

Add to that the savings to Mother Earth, by using less energy, or getting that basement space or garage space or closet space back--these go outside, remember--it's really an easy decision to go with these.

You can make phone calls on a flip phone too, but once you use a smart phone, you don't go back. You can drive a regular gas guzzler, but once you drive a hybrid, you don't want to go back. Tankless technology is like that too. Once you enjoy endless hot water and the ability to touch a little computer pad and change the temperature on the spot, you just won't ever go back to the old way.

22 people found this helpful

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Takagi T-D2-OS-NG Outdoor Tankless Water Heater, Natural Gas

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