Natural Gas Tankless Water Heater - ORBEK 120,000 BTU Up to 5.1 GPM Outdoor 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
- – 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, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. 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:
Only 5 left in stock, order soon!
Arrives
Sunday, Oct 5
Recently Viewed
Style: Natural gas
Material Type: 120,000BTU, 5.1GPM, Outdoor
Features
- Endless On-Demand Hot Water: The Orbek outdoor tankless water heater provides up to 5.1 GPM and 120,000 BTU, serving 2-4 fixtures simultaneously for comfortable use throughout your home
- Designed for Outdoor Use: The Orbek tankless water heater gas outdoor can withstand force 9 winds, has IPX4 waterproof protection on the surface, operates effectively in low temperatures, and adapts to extreme weather conditions for reliable hot water
- Safety & Reliable: The Orbek outdoor tankless water heater natural gas is CSA certified and equipped with advanced safety features, including dry combustion protection, overheat protection, water leakage prevention, anti-freeze protection, flame failure protection, and high water pressure protection etc
- Energy Efficient: Made from high-quality oxygen-free copper, the Orbek heat exchanger ensures superior heat transfer and corrosion resistance over stainless steel. It can adjust between four heating modes to meet your seasonal hot water needs, helping you save on energy costs
- Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, maintaining a stable water temperature within 1F for a consistently comfortable shower experience
- Remote Control & LED Digital Display: The Orbek gas tankless water heater outdoor features a clear screen and flexible temperature adjustment from 95F to 149F with a remote controller. A power-off memory function ensures you don't have to repeatedly reset the temperature
- Water Pressure Range: The Orbek tankless gas water heater outdoor is equipped with low water pressure start technology, allowing it to operate at water pressures ranging from 15 to 150 PSI, even in remote homes far from city centers. Additionally, the operational noise is very low, ensuring it will not disturb your family
- Easy to Install: Our tankless water heater outdoor gas uses the national standard 3/4" NPT connector size and operates on 120V AC voltage, making it compatible with most homes. Its compact dimensions of (15.5"L x 7.3" W x 24.0"H) saves space.Professional installation is recommended for better performance and safety
Brand: Orbek
Product Dimensions: 15.51"W x 23.94"H
Special Feature: 2 & 5 Years Warranty, 24/7 Customer Service, CSA Certified with Many Protections, Easy Outdoor Installation with remote controller, Four Seasons Function See more
Color: White
Wattage: 42 watts
Brand: Orbek
Product Dimensions: 15.51"W x 23.94"H
Special Feature: 2 & 5 Years Warranty, 24/7 Customer Service, CSA Certified with Many Protections, Easy Outdoor Installation with remote controller, Four Seasons Function
Color: White
Wattage: 42 watts
Voltage: 120 Volts (AC)
Maximum Flow Rate: 5.1 Gallons Per Minute
Maximum Temperature: 149 Degrees Fahrenheit
Heat Output: 306 Gallons per Hour
Efficiency: [Cannot infer specific value, but likely higher than average efficiency]
Style: Natural gas
Maximum Operating Pressure: 150 Pound per Square Inch
Mounting Type: Wall
Is Electric: No
Manufacturer: Orbek
Item Depth: 15.51 inches
Item Weight: 29.3 pounds
Item model number: HS120
Installation Method: Outdoor
Item Package Quantity: 1
Special Features: 2 & 5 Years Warranty, 24/7 Customer Service, CSA Certified with Many Protections, Easy Outdoor Installation with remote controller, Four Seasons Function
Included Components: Tankless water heater x 1 User's manual x 1 (english and french Version) Quick installation poster x 1 Assembly kit x 1
Batteries Included?: No
Batteries Required?: No
Date First Available: January 20, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Oct 5
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.
Top Amazon Reviews
Style: Indoor Installation
Material Type: 100,000BTU Propane Gas
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!
Style: Indoor Installation
Material Type: 100,000BTU Natural Gas
I wanted to come back and leave a review after having it a few months. Installation went fine. Water is hot, but takes a while to get hot to the tap. I will say for our home only 1 thing can use water at a time to get hot water, but you could get warm water on up to 3 things at once. Overall it works for us. If I were to buy again I would get a larger one but this one works and we can manage
...
show more
Reviewed in the United States on May 11, 2025 by James
Style: Indoor Installation
Material Type: 100,000BTU Propane Gas
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.
Style: Indoor Installation
Material Type: 100,000BTU Natural Gas
Fine product and provider Installation was simple, Works as advertised. Over all, I am well pleased with this purchase.
Reviewed in the United States on June 14, 2025 by Mark
Style: Indoor Installation
Material Type: 100,000BTU Propane Gas
My original review follows below--upon posting and expecting nothing I was contacted by Walter and his team and they offered a full refund or a replacement without me asking. He was responsive worked with me and frankly it was a first rate customer service experience. He's sending me a new heater tomorrow and im returning my challenged unit--couldnt have been easier and they were responsive to my ask to put the manual pdf. online and the troubleshooting guide. The unit has loads of bells and whistles and im hoping for better results this time but im off to a great start. Thanks for hearing me!!!! PREVIOUS REVIEW........This precious little heater promoted as the next coming of water heaters cannot last longer than a few minutes before every imaginable error light turns on. This delicate flower for almost $400 has never once worked properly, and this 24/7 customer service story is a joke. Try and find a contact for them! I cant and neither can Amazon. I hate this device. It is absolute garbage. I know how to install and fix most things. I cant fix garbage. Dont waste your money.
...
show more
Reviewed in the United States on November 2, 2024 by Jeff Rabhan
Style: Indoor Installation
Material Type: 100,000BTU Propane Gas
Super easy installation, did it myself, hot water on demand, very happy with this product
Reviewed in the United States on June 4, 2025 by Speed Racer
Style: Outdoor Installation
Material Type: 120,000BTU Propane Gas
I’ve been on Amazon since 1998 and this is the best 3rd party seller I have ever encountered. After buying the water heater there was an issue with the igniter. I emailed this seller and got an immediate response on what to test and how to test it. If it failed they said send it back and we will swap asap. I did not have to buy their water heater again when I return this one. I chose to buy it because prior to purchasing the first one. I did some research and it seemed to be a very good in-line water heater for that price range. I felt good about my purchase. When there was a minor issue, I was not deterred so I thought I would purchase it again. Throughout the way, they remain in constant contact with me even when I didn’t. This water heater was installed in a home and while I was returning it, there was no hot water. I emailed them my situation and they received the water heater at 10 AM on a Tuesday. They credited my account by 11 AM that same day. I ordered the replacement that same day, and they shipped the replacement all in the same day. The new unit arrived two days later. I installed it and it has been operating now flawlessly for over a month. It’s a very good machine. I highly recommend this water heater and the seller. They really stand behind their product and their communication skills are excellent.
...
show more
Reviewed in the United States on February 8, 2025 by santa_cruz_man