ORBEK Propane Gas Tankless Water Heater - 100,000 BTU Up to 4.3 GPM Indoor Installation - CSA Certified On-Demand Instant Hot Water Heater 3/4" NPT Connector Size
Condition: New
Buy Now, Pay Later
As low as
/ mo
Learn more
- – Up to 36-month term if approved
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
Non-returnable item
Learn more
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Availability:
In Stock.
Arrives
Thursday, Jun 4
Recently Viewed
![Atlin Tumbler [30 oz. Double Wall Stainless Steel Vacuum Insulation] Travel Mug [Crystal Clear Lid] Water Coffee Cup [Straw Included]For Home,Office,School - Works Great for Ice Drink, Hot Beverage](https://m.media-amazon.com/images/I/51jrNN1OU1L._AC_US500_.jpg)
Material Type: 4.3GPM, 100,000 BTU (Indoor)
Style: Liquid Propane
Features
- Endless On-Demand Hot WaterThe Orbek tankless water heater propane indoor requires only 0.53 GPM to start, providing a flow rate of up to 4.3 gallons of hot water per minute and 100,000 BTU of heat. It can provide a continuous supply of hot water to 2-3 outlets at the same time, making it suitable as a whole-house water heater or a practical gift for friends and family
- Efficient & Energy-SavingThe highly efficient oxygen-free copper heat exchanger heats water rapidly, while a built-in chip intelligently adjusts the water temperature 20,000 times per second, keeping fluctuations within 1F to provide a stable and comfortable water flow. It also keeps stable combustion even at low flow rates, achieving efficient energy utilization
- Certified Safety & ReliableThe propane water heater tankless is CSA certified, meets stringent North American safety standards, and integrates multiple protections including anti-dry burning, anti-overheating, anti-leakage, anti-flameout, and anti-high water pressure. Whether showering, washing, or using water in the kitchen, you and your family can enjoy a stable supply of hot water with peace of mind
- Easy Installation & UseThe tankless water heater's compact design (20.5"H x 13.0"L x 7.0"W) blends seamlessly into homes, cottages, and apartments. The tankless water heater propane fits standard 3-inch exhaust pipe, 3/4-inch NPT connector, and 120V household power, it's designed for indoor installation only. We recommend professional installation to help you can enjoy reliable and comfortable hot water instantly
- Convenient & Worry-freeA 2-year protection on the entire unit and a 5-year protection on the heat exchanger provide you with reliable support. The on demand hot water heater propane is equipped with a smart remote control and LED display, you can easily and precisely set the water temperature, and there's no need to reset it after a power outage. Its low-noise operation and energy-saving features create a quiet and worry-free home environment for you
Brand: Orbek
Capacity: 4.3 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
Brand: Orbek
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
Color: White
Wattage: 17 Watt-hours
Voltage: 120 Volts (AC)
Maximum Flow Rate: 4.3 Gallons Per Minute
Maximum Temperature: 149 Degrees Fahrenheit
Efficiency: High
Maximum Operating Pressure: 150 Pound per Square Inch
Mounting Type: Wall
Is Electric: No
Manufacturer: Orbek
Item Depth: 7 inches
Item Weight: 25.9 pounds
Item model number: HW100
Special Features: 2 & 5 Years Warranty, 24/7 Customer Service, CSA Certified with Many Protections, Compact Design & Easy Installation, Four Seasons Function
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
Batteries Included?: No
Batteries Required?: No
Date First Available: December 22, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jun 4
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Material Type: 4.3GPM, 100,000 BTU (Indoor)
Style: Liquid Propane
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.
...
show more
Reviewed in the United States on April 11, 2025 by Deshi!
Material Type: 5.1GPM, 120,000 BTU (Outdoor)
Style: Liquid Propane
I own two of their water heaters, one with electric heat and this one using propane. They were well supplied with parts and any owner supplied parts are easily obtained from Amazon or Lowes/HomeDepot. The propane unit sort of worked but was having issues and soon stopped to ignite at all. I contacted customer service and received a prompt reply. It was quickly determined by them to replace the unit and they sent a shipping label for the return paid by them. They were aware as soon as it was in the UPS system and shipped the new one. Regardless there was an issue, it can happen, it's the best customer service experience. The replacement unit was easily installed in 15-min and for several weeks now its working without issue. The electric unit has had no issues. I'm quite happy with the units and the company. I will note that the names Fogatti and Westinghouse appeared in service communications or on return label.
...
show more
Reviewed in the United States on June 27, 2025 by Gary W Gary W
Material Type: 3.6GPM, 80,000 BTU (Indoor)
Style: Natural Gas
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.
...
show more
Reviewed in the United States on September 10, 2025 by Krame
Material Type: 5.1GPM, 120,000 BTU (Outdoor)
Style: Liquid Propane
Good heater, need to tape and putty joints to prevent leaking. Otherwise works good for small mobile homes.
Reviewed in the United States on September 27, 2025 by George Mattos Jr
Material Type: 4.3GPM, 100,000 BTU (Indoor)
Style: Liquid Propane
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.
...
show more
Reviewed in the United States on January 23, 2025 by Jon T.
Material Type: 3.6GPM, 80,000 BTU (Indoor)
Style: Liquid Propane
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.
...
show more
Reviewed in the United States on January 24, 2025 by Lee Simmons
Material Type: 3.6GPM, 80,000 BTU (Indoor)
Style: Natural Gas
Well I surprised by the size and the amount of hot water I get. It is very easy to install. And for the price it fit my budget and gave me the hot water that is needed. I have had it for 6 months now and it works great. The quality looks good and it's very easy to change the temperature at anytime with a click of a button. Haven't had any problem yet. Very durable and looks great.
...
show more
Reviewed in the United States on January 7, 2025 by GsDead