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Series 200 Ultra Low-NOx Non-Condensing Indoor Tankless Water Heater (6.6 GPM, NG/LP)
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MANUALS (4)
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Product Highlights
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.
Rebate
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.
Please note: This unit comes Natural Gas as standard, but can be easily converted to Propane with the supplied gas conversion kit.
Fully modulating, gas fired, tankless water heater with sealed combustion and power vented flue. Indoor and outdoor models available for residential and commercial applications. Supplies hot water to domestic hot water systems and can be used with water storage tanks, recirculation systems, and/or combined domestic & heating applications.
Series 200 incorporates several new features including a combustion system that can easily be field converted from natural gas to propane with components supplied in the box. The maximum vent length has increased to 60'. The indoor models will have an integrated temperature controller and factory installed power cord. The outdoor models will include a remote control as a standard feature.
Features:
- ThermoDrain's can improve the performance and lifespan of all Hot Water Heaters, Heat Pump, Tankless and Tank.
- This unit is NOT approved for installation in Manufacture Homes and is not suitable for space heating applications only.
- This unit is NOT approved for installation in Manufacture Homes and is not suitable for space heating applications only.
- Capacity: 1 to 2 Bathrooms
- Field Convertible from Natural Gas to Propane
- Complies with SCAQMD rule 1146.2 and other air quality management districts with similar NOx emission requirements of 14 ng/J or 20 PPM.
- Maximum flow rate of 6.6 GPM at 35°F temperature rise (3.3 GPM at 70°F rise)
- Copper HEAT EXCHANGER: 25x better heat transfer than stainless steel thus stabilizing outgoing water temperature quicker and reducing pressure drop across the heat exchanger
- Indoor models include a built-in temperature controller and a factory-installed power cord as standard features.
- 15-year limited warranty on heat exchanger in residential applications, 5-year limited warranty on all parts
- Complies with Lead Free standards
Specs
| Application: | 1-2 Showers Residential |
|---|---|
| Installation Type: | Indoor Only |
| Product Type: | Tankless Heater |
| Fuel Type: | Natural Gas Propane |
| Energy Factor: | 0.82 |
| Vent Type: | Direct Vent Power Vent |
| Vent Size: | 4" |
| Inlet Gas Pressure: | 4.0-10.5"W.C |
| Type: | Non-Condensing |
| BTU (Max): | 140000 |
| BTU (Min): | 15000 |
| Voltage: | 120v |
| Weight (lbs): | 38 lbs |
| Water Connection: | 3/4" |
| Features: | Ultra Low NOx |
| Includes: | Power Cord Gas Conversion Kit Integrated Temperature Controller |
| Energy Star Rated: | No |
| Height (Inches): | 20.5" |
| Width (Inches): | 13-3/4" |
| Depth (Inches): | 10" |
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Product Reviews
Most Liked Positive Review
Quick swap out for older TK JR unit with control panel!
Most Liked Negative Review
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Terrible
good price
NO
I would buy this product again - in fact, I did!
yes
I would buy again. I hope to do my daughters home
yes
bad service
It's a perfect match for my rental unit.
Product was great quality
Perfect Replacement For An Older Model
Product Q&A
5 QuestionsQ: Hi - we are looking to replace a jr that we installed almost 15 years ago in our radiant floor system. While the btu of this model is the same we can't tell if the temp is the same, the JR goes up above 158 (the temp suggested to run our system on). Any help much appreciated!
Asked by Yolanda 2 years ago
Add your answer
Verified Reply- SupplyHouse StaffHi Yolanda, thanks for writing in. The 110U is considered the suggested alternative for the T-KJr2, however it only goes up to 140 degrees F. The TK-510U is capable of going up to 160 degrees with the temperature controller if you would like to check that unit out: https://www.supplyhouse.com/Takagi-TK-510U-I-Series-200-Ultra-Low-NOx-Non-Condensing-Indoor-Tankless-Water-Heater-10-GPM-NG-LP
Q: I have a propane Takagi Tk-Jr (discontinued) and this one is the recommended replacement (Series 200 Ultra Low-NOx Non-Condensing Indoor Tankless Water Heater (6.6 GPM, NG/LP)). Can I reuse all the existing venting pipes or will I need to replace them?
Asked by Thai 3 years ago
Add your answer
Verified Reply- SupplyHouse StaffHi Thai, thanks for writing in. This should be vented with 4" category III stainless steel, so as long as that is what you are currently using, it will work with this unit as well.
Q: Is this model appropriate in a cold climate like Vermont ?
Asked by Blake 3 years ago
Add your answer
Verified Reply- SupplyHouse StaffHi Blake. In any areas subject to freezing temperatures, the manufacturer highly recommends an indoor installation with an indoor model such as this one. In such an installation, freezing issues can occur if cold air enters through the venting into the heat exchanger, whether by negative pressures within the installation location or by strong outside winds. The manufacturer also highly recommends the use of a backflow preventer (sold separately) to minimize the amount of cold air entering through the exhaust venting when the water heater is off. The unit is also equipped with heating blocks to protect it against damages associated with freezing, called the Freeze Protection System. Keep in mind, however, for the Freeze Protection System to work, there must remain power to the unit.
Q: Do I need a condensate collector?
Asked by Jestr 6 years ago
Add your answer
Verified Reply- KevinThis is a Non-Condensing unit so a condensate collector is not mandated by install however, any condensation that may build up within the venting system would best be drained from a condensate port than going back into the unit and damaging the heat exchanger so our suggestion would be yes.
Q: Does the Takagi 200 series come with the vent pipes,elbows and parts for a easy instalation
Asked by Joel 8 years ago
Add your answer
Verified Reply- SupplyHouse StaffNo, none of the Tankless Water Heaters will come with the venting pipe because venting depends on local code, and thus it would be different customer to customer