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Orbek

Natural Gas Tankless Water Heater - ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation - CSA Certified On-Demand Instant Hot Water Heater 3/4" NPT Connector Size

    • Based on 134 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, May 5
Order within 10 hours and 27 minutes
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Style: Indoor Installation


Material Type: 100,000 BTU, Natural Gas


Features

  • Endless On-Demand Hot Water: The Orbek tankless water heater gas provides up to 4.3 GPM and 100,000 BTU, serving 2-3 fixtures simultaneously for comfortable use throughout your home
  • Safety & Reliable: The Orbek tankless gas water heater is CSA certified and packed with advanced safety features, including dry combustion protection, overheat protection, water leakage protection, flame failure protection, and high water pressure protection etc
  • Energy Efficient: Crafted from high-quality oxygen-free copper, the Orbek heat exchanger delivers superior heat transfer and corrosion resistance. It can adjust between three heating modes to meet seasonal hot water needs, saving energy costs for you
  • Compact Design: With a compact size of 20.5"H x 13.0"L x 7.0"W, gas tankless water heater indoor saves over 50% of space compared to traditional tank water heaters, fitting easily into most corners of your home
  • Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, keeping water temperature stable within 1F for a comfortable shower experience
  • LED Digital Display: The Orbek natural gas tankless water heater indoor features a clear screen for sensitive temperature adjustments between 95F and 149F. The power outage memory function ensures you won't have to reset the temperature repeatedly
  • Water Pressure Range: The Orbek tankless water heater natural gas indoor 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: Applied with a standard 3- inch OD vent, 3/4" NPT connector size and 120V AC voltage. it's compatible with most homes. Professional installation is recommended for better performance and safety

Brand: Orbek


Product Dimensions: 13"W x 20.5"H


Special Feature: Four Seasons Function, 24/7 Customer Service, 2 & 5 Years Warranty, CSA Certified with Many Protections, Compact Design & Easy Installation See more


Color: White


Wattage: 17 Watt-hours


Brand: ‎Orbek


Product Dimensions: ‎13"W x 20.5"H


Special Feature: ‎Four Seasons Function, 24/7 Customer Service, 2 & 5 Years Warranty, CSA Certified with Many Protections, Compact Design & Easy Installation


Color: ‎White


Wattage: ‎17 Watt-hours


Voltage: ‎120 Volts (AC)


Maximum Flow Rate: ‎4.3 Gallons Per Minute


Maximum Temperature: ‎149 Degrees Fahrenheit


Heat Output: ‎100000 BTU per Hour per Foot per Degree Fahrenheit


Efficiency: ‎[High]


Maximum Operating Pressure: ‎150 Pound per Square Inch


Maximum Pressure: ‎150 Pound per Square Inch


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎Orbek


Item Depth: ‎7 inches


Item Weight: ‎25.6 pounds


Country of Origin: ‎China


Item model number: ‎HW100


Special Features: ‎Four Seasons Function, 24/7 Customer Service, 2 & 5 Years Warranty, CSA Certified with Many Protections, Compact Design & Easy Installation


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: Monday, May 5

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.

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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Wow nice hot water
Style: Indoor Installation Material Type: 80,000 BTU, 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
    • Great for what I needed
Style: Indoor Installation Material Type: 100,000 BTU, Natural Gas
Just right for what I needed, pay attention to gallons per minute when purchasing. I use this for a shower and wet bar. It works very well I'm impressed. Installation was super easy.
Reviewed in the United States on March 25, 2025 by Ryan
    • Fairly straightforward install. Heats very fast, easy controls
Style: Indoor Installation Material Type: 80,000 BTU, 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
    • Continuous hot water
Style: Indoor Installation Material Type: 100,000 BTU, Natural Gas
Got this when our old tanked water heater quit working. We were able to do self install. It provides plenty of hot water for dishwasher or shower. I would recommend
Reviewed in the United States on February 15, 2025 by Kindle Customer
    • It does not work as described...at all...whatsoever and no customer support.
Style: Indoor Installation Material Type: 100,000 BTU, 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.
    • Awesome Unit
Style: Indoor Installation Material Type: 80,000 BTU, Propane
I really enjoy my new water heater. It burns a lot more fuel than tank style water heaters.
Reviewed in the United States on March 21, 2025 by Happytuneman
    • Too many expensive parts
Style: Indoor Installation Material Type: 80,000 BTU, Propane
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. ... show more
Reviewed in the United States on December 2, 2024 by Clyde and Joyce
    • deserves 6 stars took out water heater for this unit LOVE it!
Style: Indoor Installation Material Type: 80,000 BTU, Natural Gas
Does 3x the job the hot water tank did on my radiant floor heating system. runs very short time keep shop at 62 degrees with little effort where hot water tank would be running 30 minutes every hour. Do It!!!
Reviewed in the United States on December 11, 2024 by Todd Linder

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