APUS Tankless Water Heater Propane, 140,000 BTU Indoor Installation Up to 6.8 GPM, Zero Cold Water Technology for Instant Hot Water on Demand, Smart Wi-Fi App Control
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Availability:
In Stock.
Arrives
Wednesday, May 13
Set name: 140000BTU,6.8GPM,Propane
Features
- Instant Hot Water: This upgraded smart propane tankless water heater delivers consistent performance with its 140,000 BTU burner and durable oxygen-free copper heat exchanger. With the latest intelligent heating technology, it provides hot water in just 1 second, giving you instant comfort without the wait
- Zero Cold Water Tech - Instant Hot Water:Our tankless water heater propane system features APUS exclusive single-circulation technology that eliminates cold water wait time. This on demand water heater delivers instant hot water while its 24/7 ECO smart cycle saves 40% more energy than conventional hot water heaters
- Built-in Booster Pump: Increases water flow by up to 130%, delivering a maximum of 6.8 GPM. it easily supports 2 showers and 2 sinks running at the same time without temperature fluctuations, ensuring a powerful and continuous hot water supply for the whole home
- Smart Season Comfort Mode: Automatically adjusts outlet temperature based on incoming water, delivering consistent hot water all year round. With 1F precise temperature control, youll never worry about sudden cold water shocksjust steady comfort every time you turn on the tap
- Smart WiFi Remote Control: Control your propane tankless water heater anytime via mobile app (Works with Tuya APP) . With one tap, busy professionals can preheat on the way home and step right into a comfortable hot shower after work. Adjust temperatures from 95F140F, monitor performance, and receive alerts
- Advanced Safety Features: Bottom turbo fan design (30% quieter than standard tankless water heaters); 8 protection systems including freeze and overheat protection; ECO mode optimizes this tankless water heater propane model for maximum efficiency.Compact & Easy Installation: Our space-saving tankless water heater (21.313.67.1") installs easily with standard 1/2" NPT connections. This propane tankless water heater is ideal for whole-house use and comes with customer service 24/7 US support
- Built-in intelligent freeze protection automatically activates in low temperatures. Please note: When the ambient temperature approaches or falls below 41F (5C) for extended periods, or if the water heater will be unused for a long time, the unit must be completely drained of water to prevent internal components from freezing and cracking
Brand: APUS
Capacity: 6.8 Gallons
Power Source: Liquid Propane
Product Dimensions: 7.09"W x 21.26"H
Special Feature: LED Display, Smart Seasonal Technology, Turbo Flow Mode, WiFi Remote Control (Works with Tuya APP), Zero-Cold-Water Technology See more
Power Source: Liquid Propane
Special Features: LED Display, Smart Seasonal Technology, Turbo Flow Mode, WiFi Remote Control (Works with Tuya APP), Zero-Cold-Water Technology
Voltage: 120 Volts
Flow Rate: 6.8 Gallons Per Minute
Maximum Temperature: 140 Degrees Fahrenheit
Heat Output: 140000 BTU per Hour per Foot per Degree Fahrenheit
Mount Type: Wall
Is Electric: No
Smart Home Compatibility: Smart Home Compatible
Color: Space Gray
Style Name: Propane，140000BTU
Brand Name: APUS
Model Number: AP-AWH-Q20LPG
Manufacturer: APUS
Included Components: Tankless Water Heater x1,Vent Pipe x1, Manual Instruction x1, Installation Card x1, Assembly Kit x1, Zero Cold Water Piping Installation Accessories
Capacity: 6.8 Gallons
Item Dimensions W x H: 7.09"W x 21.26"H
Material Type: 6.8GPM 140,000BTU
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, May 13
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Set name: 140000BTU,6.8GPM,Natural Gas
Installed this tankless hot water heater, it says not to install in a cabinet, i however did, I made vent holes for the cabinet so that it had air circulation, and vented the exhaust out side, and it works perfectly. Gets up to a whopping 140° and will stay hot with no issues. I would recommend this unit to anyone wanting to swap from a tank to a tankless, and may purchase one for my own house.
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Reviewed in the United States on April 7, 2026 by werner
Set name: 140000BTU,6.8GPM,Natural Gas
What ever you set the temp to that's what you get. We have no complaints. We bought 2 since we have 5 bedroom 3 and 1/2 baths one with dual head showers. We never run out of hot water. Just remember there is a 45 min timer if you run more than that you need to turn of hot water and back on again and you get another 45 minutes. Safety feature. Also has recirculation feature in which you can always have hot water without waiting. Just need to add a return line. Very easy to install. When you see how small they are compared to standard hot water heater you won't believe it. Best replacement.
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Reviewed in the United States on February 13, 2026 by Hbc3700
Set name: 140000BTU,6.8GPM,Natural Gas
Don’t waste your time on this Apus tankless water heater. Went to a lot of time and trouble to install this and the thing would not ignite. I got a feeling with customer service that this was a very typical problem with this thing. Still trying to get the money back for it through customer service. Was ignored the first time. Hope this second time results in the refund. Spend an extra 300 and get a Rheem tankless water heater and just be relieved.
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Reviewed in the United States on May 5, 2026 by E-Miley8
Set name: 140000BTU,6.8GPM,Propane
We’ve been using for close to two months and have had zero issues. Works great. We switched from an electric 50 gallon and today I got my power bill and it was $114 less than last months. Highly recommend!
Reviewed in the United States on March 30, 2026 by Tom
You have to keep the water running to keep it hot,, otherwise it's fine,
Reviewed in the United States on February 13, 2026 by Raymona Walker
Set name: 140000BTU,6.8GPM,Propane
This one is working well. We had a flow issue with the last one but customer service was on it, allowed us to pay a little more for the upgrade. This has the heat loop pump and wifi app access which is better for our occupant.
Reviewed in the United States on March 13, 2026 by Captain Woody
This is THE game changer. If you've ever showered with a 6 gallon water heater and not run out of HOT water, this is not for you. For the rest of us in the real world, you gotta get this water heater and never ever worry about cold water showers again. Enjoy never ending Hot water the moment you complete the easiest installation industry wide and flip the on switch, you're in for a most relaxing experience. A must have..... Wish I had done this years ago.
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Reviewed in the United States on January 27, 2026 by CJ Phillips
Set name: 140000BTU,6.8GPM,Natural Gas
We added a two person hot tub to the master bathroom and the 40 gallon tank water heater could not handle filling the tub. We removed the 40 gallon gas water heater and installed the tankless gas heater. It was a breeze. My son and I remodeled the utility closet a while back to put in a water softener. We temporarily hooked up the pex lines to test the new water heater. It looks a little rough but it is for testing. Could not beat the price. I'll let you know if it does the job (filling the hot tub). 🙂
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Reviewed in the United States on January 25, 2026 by Robert