TENGCHANG 18L LPG Propane Gas Hot Water Heater 90000 BTU Tankless Instant Boiler Digital Display with Shower
Condition: New
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Availability:
In Stock.
Arrives
Sep 14 – Sep 17
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Size: 18L
Features
- 4.75 GPM Tankless Water Heater: TENGCHANG Tankless water heater with compact design saves more space and 90000 BTU energy efficient than traditional water heaters. Using at 3.63 - 116 PSI of water pressure, 4.75 gallons of hot water can be output per minute, the maximum temperature raise is 167F. Applicable only propane gas (LPG).
- Efficient & Energey Saving: High efficiency propane gas tankless water heater with 90000 BTU delivers 4.75 GPM of instant hot water, no more waiting for long time. The heater exchanger and main burner adopt mostly advanced energy-saving and combustion technology to decrease gas consumption and burning noise.
- Safety of Use: The hot water heater has overheat protection, dry combustion protection, flame failure protection, low water flow protection, high water pressure protection, Manifold Auto Protection. To avoid freezing in cold weather or in case of long time no use, please drainout the remaining water after using.
- Inlet & Outlet Size: Gas pressure: 2800Pa, Gas pipe: G 1/2", Water Inlet: G1/2'', Water Outlet: G1/2''. NPT 1/2" female to G 1/2" male, Vent Type:4.3" Flue Duct.
- Intelligent Control: Equipped with season control center, gas control center, water control center, can adjust different temperature and water quantity. Digital display is easier to check temperature. Automatic electric ignition powered by two size 'D' batteries (not included).
Brand: TENGCHANG
Product Dimensions: 13.4"W x 25.6"H
Special Feature: Dry Combustion Protection, Flame Failure Protection, Overheat Protection, High Water Pressure Protection, Low Water Flow Protection See more
Color: 18L Heater
Wattage: 36 KW
Brand: TENGCHANG
Product Dimensions: 13.4"W x 25.6"H
Special Feature: Dry Combustion Protection, Flame Failure Protection, Overheat Protection, High Water Pressure Protection, Low Water Flow Protection
Color: 18L Heater
Wattage: 36 KW
Voltage: 3 Volts
Maximum Flow Rate: 18 Liters Per Minute
Maximum Temperature: 167 Degrees Fahrenheit
Heat Output: 36 Kilowatts
Efficiency: ≥80.8%
Style: Protection,Thermal
Maximum Operating Pressure: 116 Pound per Square Inch
Maximum Pressure: 2.8E+3 Pascal
Mounting Type: Wall
Is Electric: No
Manufacturer: TENGCHANG
Item Weight: 18.7 pounds
Item model number: bf56e0da-9433-423f-9593-ac076935d35b
Size: 18L
Special Features: Dry Combustion Protection, Flame Failure Protection, Overheat Protection, High Water Pressure Protection, Low Water Flow Protection
Date First Available: February 1, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 14 – Sep 17
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I bought this to use for a DIY pool heater I built. It's been set up for about a week or so and working great, water output can reach 160 degrees at times, far too warm but nice to know at the settings I'm using the machine isn't straining. It's very sensitive to water and gas pressure so it took me probably 30 minutes to dial in the gas pressure and water flow but once that's complete it's fully automated. So for cons. The manual is useless. It's very sensitive to gas pressure and if you have too much/little it will not ignite, buy a good regulator. Same for water, too little and the igniter won't function. Too much and it has a relief valve that ill drain the water out of the bottom.The display is in Celsius. The water/gas connectors aren't US standard so you'll need adapters. It has a 20 minute built in off timer so you'll need a water pump on a timer that runs for 20 min, off for a couple minutes, and back on if you want continuous use. Here's what I bought for adapters: Gas: Anderson Metals - 54046-0608 Brass Tube Fitting, Coupling, 3/8" Flare x 1/2" Female Pipe GasOne 2109-RED 4 ft High Pressure 0-20 PSI Adjustable Regulator Water: 1/2” G Thread (BSP) Female to 1/2” NPT Male Connector I also went and bought pvc connectors for running my water lines, I took the connector with me to the store but you'll need two 1/2" female 'screw on' connectors to attach hard lines.
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Reviewed in the United States on October 2, 2022 by AAA
Size: 18L
It was easy to install, it worked instantly, maintained temperature
Reviewed in the United States on May 5, 2025 by Demetrio P.
Size: 8L
I purchased this hot water heater and only used it less than a month. I turned on the hot water tap in my kitchen and heard the ignitor clicking but the water heater didn't light. With the tap still on I went to look at the heater to see what was up. I was met with a forceful fire ball just short of my face. I felt the force, but wasn't burned. The thing hasn't worked since. The item said that it was eligible for return until January 31, 2025. Upon starting the return process, I was met with a message stating that the return window ended November 1st this year. I'm lucky that I wasn't burned and that my trailer didn't burn down around me. It's dangerous junk and should be recalled. Now I'm out a hundred bucks and have no water heater for the winter!
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Reviewed in the United States on November 21, 2024 by Jesse Stobaugh
I purchased it in Mar of 2021, (it's July 2023 now), to heat my stock tank hot tub. I can take an 8ft round tank (700 usGal) from 75F deg to 110deg in 2.5 to 3 hrs. It shows Celcius for temps so I put the conversion on it. ( yay Sharpe) . Installation was relatively easy if you have any plumbing experience. On installation I did get the plumbing adapters, DONT FOR GET THEM and I put quick disconnects on the water in and out and the hoses. I have garden hoses ( good ones not the cheapy) connected to the hot tub and the pump. I also put plumbing pipe insulation over the hoses too, which works nicely. When it is going to storm It's a 3 min job to pull the connections and bring it in the house, otherwise, I just cover it with a tarp. I was going to build an enclosure for it but I can't find the stove pipe to fit it. The issues I have had over the years is the tab to hold the batteries in the holder has broken and I can't find how to get a replacement battery pack. The twist lock works but it bulges. They corrode a bit but are easy to clean, but gee it's outside all spring, summer, and fall. I'm in Minnesota so no on winter. I also have had issues with the gas valve not clicking on all the time, some times its the battery is low ( there is no replacement battery indicator.) not sure what the other cause is. I just turn it on and off several times and it starts working (did not happen often). Once it runs it runs for hours even with the pump cycling on and off. Im very happy with the way it has lasted and heats the water. A very good buy.
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Reviewed in the United States on July 3, 2023 by Don H
Size: 6L
12/5/24 So my first unit I got would not turn on and after troubleshooting everything I could think of, I reached out to the seller and they sent me a replacement. It works!! Any time I turn my hot water on it automatically turns on and starts heating up. Super convenient for being offgrid. You just need steady water and gas pressure and it works like a charm! 2 years of boiling water for showers is over!! I'll update if it's no longer working. But if I don't update, its still doing the job!
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Reviewed in the United States on December 6, 2024 by Melissa Gatto
Size: 18L
I bought this thinking it was brand new, but it looked like someone had already used it. The water outlet connector was bent and leaking, and there was some corrosion around it. The knobs were super loose and wobbly, and they didn’t line up with the settings like they should. I tried reaching out to customer service, but they didn’t get back to me quickly. Pretty disappointed overall. Not what I expected at all.
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Reviewed in the United States on May 6, 2025 by AD AD
Size: 10L
You get hot water, however, if you Don't have enough water pressure, it won't run. Unfortunately it only turns down so far, and then just shuts off, which is horrible, I should be able to make warm water not just hot, but I can't. This isn't a cheap water heater, but it's not expensive either, the value is somewhere in the middle. The water only gets hot for a little bit, then you have to have someone turn it back on. Which sux. The capacity of the water is great, because it's on demand. So heats up as it flows. The temperature is in C°, not F° temp. The quality is OK, like it could work better, I think. But for the price, and the fact that it works, is fantastic. It was easy to install as well, just make sure it's level when hanging, or it will NOT work. Must be level when hung. And you shouldn't use it in doors. I just hung mine outside my house, and ran lines inside. Works great!
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Reviewed in the United States on November 11, 2024 by mill
Size: 8L
Absolutely the best investment I've made for my fifth wheel trailer second to none
Reviewed in the United States on June 7, 2025 by lonnie