CONTACT & SUPPORT
Live Chat: Online Now
0
CART
'/%3E%3C/svg%3E)
Hover image to zoom
T-H3J-DV-P Indoor Tankless High Efficiency Condensing Water Heater (LP)
 --%3E %3Csvg version='1.1' id='Fill' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23F15C02' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
 --%3E %3Csvg version='1.1' id='Half' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cg%3E %3Cpath fill='%23F15C02' d='M30.05,70.23l3.79-12.01L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1h1.58 L93.71,7.18c-3.58-3.82-8.66-6.23-14.28-6.23H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,5.41,2.22,10.32,5.79,13.88 L30.05,70.23z'/%3E %3C/g%3E %3Cpath fill='%23FBC8B4' d='M93.71,7.18L60.98,39.6H91.2L65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82l5.55-17.59L6.75,93.32 c3.55,3.54,8.44,5.73,13.82,5.73h58.87c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,15.4,97.01,10.69,93.71,7.18z'/%3E %3C/svg%3E){kind=small}
Hover image to zoom
' fill='%23F15C02' d='M49 0C21.938 0 0 21.938 0 49s21.938 49 49 49 49-21.938 49-49S76.062 0 49 0m0 82.709a7.54 7.54 0 1 1 0-15.08 7.54 7.54 0 0 1 0 15.08m7.54-28.412a7.541 7.541 0 0 1-15.08 0V22.831a7.54 7.54 0 0 1 15.08 0v31.466z'/%3E%3C/svg%3E)
T-H3J-DV-P has been discontinued
Discontinued December 24, 2025
This product was discontinued by the manufacturer.
MANUALS (5)
'/%3E%3C/svg%3E){kind=small}
Suggested Alternative:
160,000 BTU ATHR-160M Adapt Premium Condensing Ultra-Low NOx Tankless Water Heater (Natural Gas)
 --%3E %3Csvg version='1.1' id='No-RB' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23CECECE' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
VIEW ALTERNATIVE
Product Highlights
–
Propane
6.6 MAX GPM
Indoor Only
Direct Vent
Yes
22.5" Height
Description
–
The Takagi brand has been discontinued by the manufacturer as of December 31, 2025. Suggested replacement units will be available on our website and replacement parts will continue to be available as supplies last. If you'd like any further assistance, please contact our customer service team.
Think Green, Save Green. Rebate and incentive programs provide cash-back to consumers for the purchase of appliances that meet certain energy efficiency standards. Most states are offering rebates in the $50 to $250 range. You can search for rebates in your area from here.
Note: Isolation valves are not included but are recommended for installation.
The all new T-H3J-DV/OS is available in 2 models the T-H3J-DV (Indoor) and the T-H3J-OS (Outdoor) having a max GPM of 6.6. Also offers Ultra-Low NOx condensing technology which provides 0.95 energy factor. Try the new T-H3J-DV/OS and see why Takagi offers the highest efficient and durable residential tankless heaters on the market.
The T-H3J-DV/OS is ideal for residential applications. The primary heat exchanger is constructed of HRS35 Commercial-Grade copper which is more resilient against erosion. In addition to the added durability, the T-H3J-DV/OS is ENERGY STAR® qualified. Indoor model includes a built-in temperature controller and diagnostics while the outdoor model includes a temperature remote controller.
Specs
–
| Energy Factor: | 0.95 |
|---|---|
| Inlet Gas Pressure: | 8.0"-14.0"W.C. |
| Product Type: | Tankless Heater |
| Max Flow (GPM): | 6.6 |
| BTU (Min): | 13000 |
| BTU (Max): | 160000 |
| Fuel Type: | Propane |
| Vent Type: | Direct Vent |
| Application: | 2-3 Showers Residential |
| Type: | Condensing |
| Installation Type: | Indoor Only |
| Venting Requirement: | PVC/CPVC |
| Energy Star Rated: | Yes |
| Height (Inches): | 22.5" |
| Width (Inches): | 17-3/4" |
| Depth (Inches): | 10-3/4" |
| Flow Rate at 40F Temp Rise (GPM): | 6.7 |
| Flow Rate at 60F Temp Rise (GPM): | 5 |
| Flow Rate at 70F Temp Rise (GPM): | 4.3 |
| Flow Rate at 50F Temp Rise (GPM): | 6.1 |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
Compare Similar Products
Brand
Energy Factor
Product Type
Max Flow (GPM)
BTU (Min)
BTU (Max)
CURRENT ITEM
0.95
Tankless Heater
6.6
13000
160000
You May Also Need
70 Replacement Parts
Filter Plug, 100074381
SKU: 100074381
TakagiKit, Rod, Holder, 100074221
SKU: 100074221
AO SmithIgniter Rod, 100074222
SKU: 100074222
TakagiFront Cover for T-H3J-DV, 100074663
SKU: 100074663
TakagiRod Cap, 100074223
SKU: 100074223
AO SmithKit, Fastener, 100074389
SKU: 100074389
AO SmithKit, Damper, Fan, 100074466
SKU: 100074466
AO SmithOutlet Drain Plug, 100074383
SKU: 100074383
TakagiManifold Gasket, A, 100074229
SKU: 100074229
TakagiIntake Air Port Assembly, 100074667
SKU: 100074667
TakagiPressure Port, 100074227
SKU: 100074227
TakagiKit, Box, Junction, 100074668
SKU: 100074668
AO SmithFlow Adjustment Valve w/ Flow Sensor, 100074624
SKU: 100074624
TakagiKit, Heater, Inlet, 100074629
SKU: 100074629
AO SmithFlame Rod, 100074673
SKU: 100074673
TakagiKit, Plate, Fixing, Heater, 16, 100074310
SKU: 100074310
AO Smith
Need help finding a replacement part?
Fill out the part request form and someone will get back to you shortly.
PART REQUEST FORM
Product Reviews
4.65 out of 20 reviews
95% would recommend this product
5 star
80%
4 star
15%
3 star
0%
2 star
0%
1 star
5%
Most Liked Positive Review
Nice for floor heat
We are a radiant heat contractor and we use these as an alternative to boilers. Some will disagree with this on principle but we have had very good results. We like Takagi for this purpose for several reasons; they have supported using their tankless units for space heating applications for years, their units have a very good turn-down rate, they are easy to install and they have been very reliable.
One specific recommendation for using these, if you need supply water temperatures hotter than 140 F, you will need the larger TH3 unit and a remote controller, the smaller units will only go to 140 F maximum. Also, the inline strainers on this units (like most tankless heaters) is quite small. If your water stream has any particulates in it, you'll want to add an inline wye strainer upstream from the pump. We use a 1" or 1-1/4" strainer with a 100 mesh screen.
Multiple happy customers, which makes US happy.
VS
Most Liked Negative Review
 --%3E %3Csvg version='1.1' id='With-RB' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23FBC8B4' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
Quit working after 8 hrs.
Fan failed after 8 hrs of use trying to start up radiant floor system. Takagi tech support said no warranty because used in radiant heat system. They do not support using for heating systems. 250$ fan motor
Showing 1-10 of 20 reviews
Great Heater!
This is a replacement for my original one I installed around 22 years ago! Honestly the old one was probably fine and most likely needed a new flow switch but at that age I figured it would be better to just replace with a more efficient model.
Rob T
CT
1 years ago
Verified Buyer
Was this review helpful to you?
They never disappoint.....
I am a veteran that helps many veterans with various projects. When it comes to plumbing, Supply House is my vendor of choice. Their product selection is great and whomever you interact with will definitely meet or exceed your expectations.
Simply put, they are a company that makes every effort to retain or gain new customers.......that is why I have been with them for several years. Give them a try.
Veterans Helping Veterans
Boston, Massachusetts
1 years ago
Verified Buyer
Was this review helpful to you?
I will buy this again.
Have installed several of these units and no major issues with any of them.
Dew
Kansas
3 years ago
Verified Buyer
Was this review helpful to you?
second one I've bought.
This is the second one I bought for a house I'm renovating. Heating hot water with gas is more efficient than electric. Supplyhouse.com has the best prices and service. Keep up the good work.
Mike
Blairsville
4 years ago
Verified Buyer
Was this review helpful to you?
Takagi is a very reliable heater
I've installed several Takagi heaters with almost no problems. They stand behind their product and resolve any problems.
Dave
Lewisburg PA
4 years ago
Verified Buyer
Was this review helpful to you?
I would use this item again
This is a great product, I use them for hydronic heating systems and they also work well for that purpose. My only recommendation, remove their inline filter screen . It's way too small and will not allow your pump to achieve the 2 GPM they want for this heater when being used for heating. Use a 1" or larger strainer in your circulating line
Plumbit
Michigan
5 years ago
Was this review helpful to you?
Quit working after 8 hrs.
Fan failed after 8 hrs of use trying to start up radiant floor system. Takagi tech support said no warranty because used in radiant heat system. They do not support using for heating systems. 250$ fan motor
Bruce
Iowa
7 years ago
Was this review helpful to you?
Super quiet Takagi-T-H3J-DV-P-
This is the second heater of this model I have purchased. I am very pleased with the performance.
Very easy installation. Have had the first one since august 2015. Plan on a third unit in the next six months. Always very prompt shipping.
Colorado Shrimper
Colorado Springs Co
7 years ago
Verified Buyer
Was this review helpful to you?
Perfect
Had one for 18 years. Never any problems.
Mike
Arkansas
8 years ago
Verified Buyer
Was this review helpful to you?
Excellent service and quality product
The tankless water heater I purchased was used to replace a 10-year-old Rheem tankless unit that was problematic for a 7000-foot elevation. The need was immediate and when I ordered the T-H3J-DV-P it was shipped the same day, unlike a competitor that could not ship for 2 weeks. The unit arrived three days later and I installed it with little effort. The pricew was very competitive and the service was excellent.
Pineywoods34
Happy Jack, Arizona
8 years ago
Verified Buyer
Was this review helpful to you?
Product Q&A
4 Questions4 Questions
Q: If installing two Takagi condensing units can you vent them via a common manifold similar to a Rinnai common vent?
Asked by John 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffYes, please refer to page 20 of the installation manual found here on our site : http://s3.supplyhouse.com/product_files/Takagi-T-H3J-DV-P-User-Guide.pdf
Was this review helpful to you?
Q: Do you carry the optional remote temperature controller for this model? If so, how much?
Asked by Rick 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffWe do carry the TM-RE40. It can be found here on our site : http://www.supplyhouse.com/Takagi-TM-RE40-Temperature-Remote-Controller
Was this review helpful to you?
Q: What size LP supply pipe is required?
Asked by Bruce 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffThe gas connections are 3/4" NPT. for properly sizing supply piping, please see page 26 of the installation manual found here on our site : http://s3.supplyhouse.com/product_files/Takagi-T-H3J-DV-P-User-Guide.pdf
Was this review helpful to you?
Q: which regulator is recommended for the Takagi t-H3J-DV-P Indoor model? I'm supplying with a 100# propane cylinder and the unit is being used for a driveway snowmelt system.
Asked by Richy 11 years ago
Add your answer
Verified Reply- Supplyhouse Staffsee page 20. http://s3.supplyhouse.com/product_files/T-H3J-DV-P-Install.pdf
Was this review helpful to you?