ORBEK Propane Tankless Water Heater 80,000 BTU 3.6 GPM Indoor CSA Certified Low Flow 0.53 GPM On-Demand for Cabins Tiny Homes 1-Bathroom with Remote Control LED Display
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Sunday, Aug 2
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Set name: 3.6GPM|Propane|Ind
Features
- Perfect for Small Spaces & CabinsThis 80,000 BTU propane tankless water heater delivers up to 3.6 GPM of endless hot water ideal for 1-bathroom apartments, tiny homes, cabins, or as a point-of-use booster. CSA certified to meet North American safety standards.
- 1F Precision Temperature ControlBuilt-in smart chip adjusts water temperature 20,000 times per second. No more cold water sandwich effects enjoy stable, comfortable hot water from shower to kitchen sink. Temperature range: 95F 149F.
- Ultra-Low Flow Activation (0.53 GPM)Starts heating at the lowest water flow rate in its class perfect for low-flow fixtures and eco-conscious homes. Get instant hot water without wasting a single drop.
- Easy Digital Control with RemoteIncludes a convenient remote control and LED display. Set your desired temperature from anywhere in the room. Retains settings after power outage no need to reprogram. Low-noise operation (<48 dB).
- Indoor Installation Only Professional RecommendedCompact design (20.5"H x 13.0"L x 7.0"W) fits standard 3-inch exhaust pipe, 3/4 NPT connectors, and 120V outlet. Note: For best performance, supports 1 shower + 1 faucet simultaneously. Backed by 2-year unit + 5-year heat exchanger warranty.
Brand: Orbek
Capacity: 3.6 Gallons
Power Source: Propane Gas
Product Dimensions: 13"W x 20.5"H
Special Feature: 2 & 5 Years Warranty, 24/7 Customer Service, CSA Certified with Many Protections, Compact Design & Easy Installation, Four Seasons Function See more
Power Source: Propane Gas
Special Features: 2 & 5 Years Warranty, 24/7 Customer Service, CSA Certified with Many Protections, Compact Design & Easy Installation, Four Seasons Function
Wattage: 25 Watt-hours
Voltage: 120 Volts (AC)
Flow Rate: 3.6 Gallons Per Minute
Maximum Temperature: 149 Degrees Fahrenheit
Heat Output: 80000 British Thermal Units
Efficiency: high
Maximum Pressure: 150 Pound per Square Inch
Mount Type: Wall
Is Electric: No
Smart Home Compatibility: Not Smart Home Compatible
Color: White
Style Name: Propane Gas
Brand Name: Orbek
Model Number: HW080
Manufacturer: Orbek
Manufacturer Warranty Description: The entire unit is covered by a 2-year warranty, The heat exchanger is covered by a 5-year warranty
Included Components: Tankless Water Heater x 1 User's Manual x 2 (English and French Version) Quick Installation Poster x 1 Assembly Kit x 1
Unit Count: 1.0 Count
Item Type Name: Tankless Gas Water Heater
Capacity: 3.6 Gallons
Item Dimensions W x H: 13"W x 20.5"H
Item Depth: 7 inches
Material Type: Propane Gas
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Aug 2
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: 3.6GPM|Propane|Ind
I bought this unit to supply hot water in a city bus conversion. It's been fantastic. The volume of water produced is enough for our shower and sink. It's not going to be a whole house unit but I don't think it's designed that way. It has been simple to use since the first day. We're 3 years into use of the bus for seasonal work and it has fired up every time with no issues.
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Reviewed in the United States on June 14, 2026 by Michael R.
Set name: 3.6GPM|Propane|Ind
I’m excited this is my first tankless water heater. Was fairly straightforward to install. I had it done since I wasn’t the most experienced with plumbing lines. Got a feeling this propane heater is going to work wonders on my electric bill. Something’s I’ve found so far , system heats really fast but takes the lines about a minute to reach my outlet where I’m using the water shower, kitchen sink etc. once it’s there very hot. Did try reducing flow of water in shower and notice if you slow the gpm to much it does indeed shutdown and water gets cold. I’ve taken fairly long showers for me and water stays constantly hot. So far very happy. This will also keep me from having to use my 220 heater and it’s great for my supplemental/ backup solar which supports only 120v.
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Reviewed in the United States on January 24, 2025 by Lee Simmons
Home is 3500+sq ft, built in 1960. Previous water heater was typical 40 gallon gas. PROS --easy installation process (husband set up, but I supervised), small, compact and wall mountable for tight spaces, works well --when it turns on, heater makes a light clicking sound, followed by a low rumbling hum that continues until hot water tunes off. (So you know it's working) -continuous hot water supply, water heater quality is great- feels very hot at 125 CONS -Cannot use more than one appliance at time(washing machine/shower/dishwasher) bc the water pressure and temperature will go in and out (would need a water heater with a higher btu) -cost was a bit steep but it is continuous hot water supply so I suppose one could justify it like that. OVERALL I'm pretty satisfied with the purchase. As the replacement of an ancient appliance, the (+)s for this product def outweigh the (-) which there weren't many. We bought this as sort of test to see what it could do or if it was worth it to splurge for the more costly product. But in the end, we ended not upgrading bc we didn't have to.
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Reviewed in the United States on November 13, 2025 by Denise
Set name: 4.3GPM|Propane|Ind
So far working great, and one of the best things about it is that it turns on with minimal flow that my prior heaters of this gpm would not operate at. So we no longer need to have faucets at full blast just to get the heater to turn on. Also like that it had 3/4 sized water connections where as other heaters only do 1/2" size which limits flow especially when using plumbing like pex. The only negative is that it does take about a second longer to actually cut on once it detects flow compared to other heaters I have had, just makes it a bit longer to wait for hot water to start coming out. Otherwise, seems like a high quality heater, hopefully it will last without throwing error codes like I have had with these style heaters in the past. Keep in mind, these style of water heater do not need to mix with cold water like a traditional heater. You want to set the temperature to the hottest setting that you need out of the tap without mixing with cold water. then use the cold water to adjust down as needed. You do NOT need to set it to some high temp to then mix with cold water like you normally do with a tank in order to not run out of cold water in the shower. these are on demand so you will never run out. I see alot of reviews saying it cuts off when they mix it with cold water. likely they are having the temp up too high and mixing too much cold water with it causing the flow to drop down too much and causing it to cut off. this will happen with ANY of these tankless style water heaters. Especially in an RV where flow is often lower to begin with.
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Reviewed in the United States on April 11, 2025 by Deshi!
Set name: 4.3GPM|Propane|Ind
Customer service seemed great until they stopped communicating and punted the issue to Amazon. The hot water heater, specifically, the indoor propane tankless heater, stopped working inside of 90 days. At first at first customer service seem genuinely concerned and said that a replacement would be issued. After several days of going back-and-forth I began to be suspicious it started to pin down their customer service representative to give me details on shipment. The customer service rep stated that they had no visibility on shipping documents or tracking numbers. And then the following day I get a message from their customer service rep putting this issue to Amazon stating that sits Amazon fulfilled the original order Amazon would have to fulfill the second order. Assuming that Amazon was notified of the issue I was looking for shipment information from Amazon which does not exist. Do not buy this junk it is worthless. This is the first bad experience I have ever had with a product from Amazon for as long as I have been shopping Amazon (8 years??). Essentially there is a temperature probe that must be bad because it hets the water for about 10 seconds and then errors out with a Code 8 which is a blockage in the squirrel cage or duct. Checked and Checked again multiple times and nothing blocking the exhaust...I could go on and on about how crappy this product is but for the sake of time, DO NOT WASTE YOU HARD EARNED MONEY.
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Reviewed in the United States on January 23, 2025 by Jon T.
Set name: 3.6GPM|Natural Gas|Ind
I bought this awhile ago but just installed it. I’ve only got a 1/2” gas line running about 90 feet from the meter @ just under .26 psi and the 80K BTU unit can handle 2 fixtures continuously which is 3.5 gpm. I’m in the yellow zone so it’s working at or slightly above the stated spec which is great. I’ve also got it set to 118 degrees which is above the factory setting of 107. If I try a 3rd fixture it still works but it drops the water temp to accommodate —it doesn’t shut down which is nice. It was easy to install as I had all the connections there and the integrated cord meant I didn’t have to wire a cord to it. Gas is tricky so unless you’ve got all your numbers and calcs done, it’s easy to be disappointed with the performance. All the numbers I quoted above are very important before trying a tankless and the reason I didn’t go with a lager unit. Be aware. So far so good now let’s see if it lasts.
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Reviewed in the United States on September 10, 2025 by Krame
Set name: 3.6GPM|Propane|Ind
1. It doesn’t come with any lines n cost is about 250.00 in parts. Gas lines, Water lines, and the exhaust alone was over 100.00 ! 2. The other problem is that when you turn the cold water on the hot water turns cold. The propane quits in the middle of running the hot water. We had to turn it all the way up to 149 degrees n it still doesn’t stay hit all the time. We are in an RV n they mess with the water flow, up n down n up n down, And at times we are all using it, the water pressure goes down. And because it doesn’t always do this, it could be because of the pressure, i’m not sure. But it happens too often n in the shower it’s horrible having to shut it off n turn ut on to try n get it going in the middle of a shower. It’s hard to get a good steady warm temperature n turning it up all the way is a must for us. It’s still character than the RV one on etrailer but km thinking i should have saved n got s good one instead. On the flip side, having to shut the shower off n on …it was still nice to have a warm shower without having to use jugs or use the outdoors shower. it warmed up the RV! If you can afford a better one, i think i would. …or if you have a good flow of water, then it may be ok. I’m not sure. It took almost a month to get the right parts to hook it up. It wasn’t easy. It was a special store that had them. None of the box stores had the parts , not even Ace. It should have come with at-least all the propane gas lines. If i would have known, i would not have bought this.
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Reviewed in the United States on December 2, 2024 by Clyde and Joyce
Set name: 4.3GPM|Propane|Ind
I’m in NC. This unit replaced a 23 year old 40 gallon tank. It took me about 2.5 hours to install including installing a new GFCI outlet and PEX, so not bad. Make sure you buy a vent kit and code requires that a GFCI outlet be used for it. Use good Teflon tape (I used blue monster) and make sure to check the gas connections for leaks using a spray of soapy water. The only negative is that it takes about 2 minutes for the water to reach the shower to get up to full temperature. That’s pretty standard for tankless water heaters, though so I knew that going in having had one at another house. I have the temp set to 109F so not super hot but comfortable.
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Reviewed in the United States on July 20, 2024 Reviewed in the United States on July 20, 2024 by Sha-Zam