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MIZUDO

Natural Gas Tankless Water Heater, MIZUDO Up to 4.3 GPM, 100,000 BTU, CSA Certified, Indoor Installation Instant Hot Water Heater

    • Based on 99 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 1
Order within 5 hours and 12 minutes
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Material Type: 4.3 GPM | 100,000BTU


Style: Natural Gas


Features

  • Quality Certification: MIZUDO tankless gas water heater has passed CSA certification and has protection functions such as overheating protection and accidental flameout protection.
  • Endless Hot Water: Powered by natural gas and 120 volts, up to 4.3 GPM hot water flow, precise temperature control, no water temperature sandwich.
  • Premium and Durable: Adopt oxygen-free copper water tank, reduce heat loss, high efficiency and durability.
  • Compact Design: Dimensions are H 20.5'' x W 13.0'' x D 7.0''. Save over 50% of available space compared to tank water heater.
  • Energy Conservation: The UEF is higher than 0.81 and consumes energy only during heating.

Brand: MIZUDO


Product Dimensions: 13"W x 20.5"H


Special Feature: Dry Combustion Protection, Flame Failure Protection, High Water Pressure Protection, LED Display, Anti-Freezing Protection See more


Color: White


Voltage: 120 Volts (AC)


Brand: ‎MIZUDO


Product Dimensions: ‎13"W x 20.5"H


Special Feature: ‎Dry Combustion Protection, Flame Failure Protection, High Water Pressure Protection, LED Display, Anti-Freezing Protection


Color: ‎White


Voltage: ‎120 Volts (AC)


Maximum Flow Rate: ‎4.3 Gallons Per Minute


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


Efficiency: ‎UEF > 0.81


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎Mizudo


Item Weight: ‎25.9 pounds


Country of Origin: ‎China


Item model number: ‎FDG-CS100WNG


Special Features: ‎Dry Combustion Protection, Flame Failure Protection, High Water Pressure Protection, LED Display, Anti-Freezing Protection


Included Components: ‎‎‎‎Tankless Water Heater, User's Manual, Quick Installation Poster, Assembly Kit, Warranty Card


Batteries Required?: ‎No


Date First Available: October 31, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 1

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

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Surprisingly easy to install
Material Type: 4.3 GPM | 100,000BTU Style: Natural Gas
Was shocked at how easy it was to install. Works wonderfully.
Reviewed in the United States on March 22, 2025 by Laura Taylor
    • SAVE money.....go tankless!
Material Type: 3.6 GPM | 80,000BTU Style: Natural Gas
Review Image by mcgsr mcgsr
Review Image by mcgsr mcgsr
Installed this baby to replace my 40 gallon tank. MAN I'll never go back in with a tank model. It's very efficient and half the price of the tank model. I love it and 109% recommend this tankless water heater!!
Reviewed in the United States on March 25, 2025 by mcgsr mcgsr
    • Good product
Material Type: 5.1GPM | 120,000BTU Style: Natural Gas
The first one that I ordered had some electrical defects when I hooked it up. The system continued to beep on and off constantly and would not work. I filed for a replacement through Amazon and it was a good interaction. I received a replacement model which works perfect!! It's quiet and heats water in seconds.. I'd buy again! ... show more
Reviewed in the United States on December 20, 2024 by Brett
    • Works well
Material Type: 5.1GPM | 120,000BTU Style: Natural Gas
The heater is easy to install. Heat up water instantly and so far is working well without any problem.
Reviewed in the United States on January 8, 2025 by TL
    • Works well
Material Type: 3.6 GPM | 80,000BTU Style: Natural Gas
Get the 100k btu. You will appreciate the extra flow when the incoming water is really cold and the faster heat up time.
Reviewed in the United States on February 1, 2025 by Jim in OH
    • Not worth the trouble
Material Type: 5.1GPM | 120,000BTU (Outdoor Ins... Style: Natural Gas
I'm experiencing multiple issues with this water heater. It heats up for about a minute before turning cold, requiring us to repeatedly switch it off and on. I noticed that another customer mentioned a similar issue in their review. Additionally, there is a noticeable delay in getting hot water to the faucets throughout my home, and the unit cannot support two people showering at the same time. This is already our second unit—the first one had an electrical issue and had to be returned. Unfortunately, this replacement is also not functioning properly. Given that this is a brand-new construction home, I expected better performance. At this point, I'm seriously considering requesting assistance or a refund. ... show more
Reviewed in the United States on March 12, 2025 by Chatoya
    • Arrived Fast. Easy to Install. Great Seller
Material Type: 5.1GPM | 120,000BTU Style: Natural Gas
Review Image by Amazon Customer Amazon Customer
This arrived very fast, which is good because my tank water heater died. After reading the instructions and looking at the unit I realized that the installation is very straight forward and fairly simple for any good DIY'er. The hardest part was removing my old 50 gallon Tank Water Heater. It fired up the first time and is working perfectly. I am adding a 2 Stage water prefilter in a few days to prolong the life expectancy of the unit.I only had to deal with the seller 1 Time since purchased, and they were quick to respond and solved my only issue immediately. For those that live in high altitude areas, I would recommend this unit for a 2-Bath home. Both of my showers run very well at the same time @ 6000 ft above sea level. I had to get a 1/2"NG to 3/4"NG converter and new 3/4' NG Line to connect to the unit, and am having no issues with NG Supply under heavy load. It only takes up 1/4 the space that my old water heater did. I am very pleased with the uniy, the seller and the service. :-) ... show more
Reviewed in the United States on July 22, 2024 by Amazon Customer Amazon Customer
    • Great water heater
Material Type: 5.1GPM | 120,000BTU Style: Natural Gas
this water heater works great. only complaint is if there is a power outage you must push power button on front control panel to turn it back on.
Reviewed in the United States on December 12, 2024 by sgt spicoli

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