Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater, CSA Certified 3/4" NPT for 2-3 Fixtures Whole Family or Apartment Use
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Availability:
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Arrives
Saturday, Oct 4
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Material Type: 3.6 GPM, 80,000 BTU, Indoor
Style: Natural Gas
Features
- Continuous Hot Water for Multi-Tasking: Mizudo tankless water heater provides hot water within 10 seconds at 3.6 GPM and 80,000 BTU, suitable for homes with bathrooms using 2-3 low-flow fixtures
- Energy Efficient Operation: On-demand heating, tankless water heater only consumes gas during use. Oxygen-free copper heat exchanger provides faster heating than standard steel models
- Third-Party Certified Safety: All tankless water heaters gas are UL listed and CSA certified to meet US safety standards for gas appliances. Includes 2-year whole unit coverage and 5-year for heat exchanger
- Integrated Protection System: This natural gas tankless water heater is provided with built-in safeguards such as freeze protection, leak detection, overheat cutoff, and wind-resistant ignition
- US Home Compatibility: The gas water heater indoor is compact 20.5 x 13.0 x 7.0 in. Natural gas powered indoor unit. Operates on 120V power with 3/4" NPT connectors. UEF >0.81
Brand: MIZUDO
Product Dimensions: 13"W x 20.5"H
Special Feature: 2 Years Support for Whole Unit, 5 Years Support for Heat Exchanger, Automatic Anti-Freezing Protection, CSA Certificated, Temp Self Modulating See more
Color: White
Wattage: 25 watts
Brand: MIZUDO
Product Dimensions: 13"W x 20.5"H
Special Feature: 2 Years Support for Whole Unit, 5 Years Support for Heat Exchanger, Automatic Anti-Freezing Protection, CSA Certificated, Temp Self Modulating
Color: White
Wattage: 25 watts
Voltage: 120 Volts
Maximum Flow Rate: 3.6 Gallons Per Minute
Heat Output: 80000 BTU per Hour per Foot per Degree Fahrenheit
Efficiency: High
Mounting Type: Wall
Is Electric: No
Manufacturer: Mizudo
Item Depth: 7 inches
Item Weight: 25.9 pounds
Item model number: FDG-CS80WNG
Item Package Quantity: 1
Special Features: 2 Years Support for Whole Unit, 5 Years Support for Heat Exchanger, Automatic Anti-Freezing Protection, CSA Certificated, Temp Self Modulating
Included Components: Tankless Water Heater, User's Manual, Quick Installation Poster, Assembly Kit, Warranty Card
Batteries Included?: No
Batteries Required?: No
Date First Available: July 19, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Oct 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.
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Top Amazon Reviews
Material Type: 3.6 GPM, 80,000 BTU, Indoor
Style: Propane Gas
I installed this hot water heater on a 400sq foot cabin where the old hot water heater had died. Local hot water heaters at Lowes cost over $1000 minimum for identical specifications due to lack of availability on big island. This heater arrived and was identical in size, appearance, and function to the previous heater, except it's digital now, so hookup was quite simple. The led displays are fairly bright, and it's simple to select the desired temperature. This hot water heater is able to sustain extremely hot water fairly indefinitely to a single shower, which was my target. The water flow is good at that volume, and it's operation is fairly silent. Overall quality of the unit seems fine, though time will tell. All in all, I would definitely buy this heater again for a small application like this.
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Reviewed in the United States on December 5, 2024 by Critical Insights
Material Type: 5.1 GPM, 120,000 BTU, Indoor
Style: Propane Gas
I installed this in the cabin we live in about a month ago and so far it's been working well for us. The distance from the heater to the various taps is fairly short and there is a bit of a lag getting hot water to the outlets,but I believe that is more of a result of the "water saving" fixtures we are stuck with these days and their flow restrictive nature. Water temp fluctuations have been minimal. Though we have noticed some due to the lower temp of the incoming water to the heater after the water has run for a period of time. We have very cold water from our well. The unit is a little noisy,but that is far from our concerns. My only real concern is the water heater cycling when running the washing machine when set to a warm wash temperature. It runs for such a short period that the water doesn't really get an opportunity to heat and I feel like the rapid cycling is probably not good for the heater. I feel this is more of an issue with the washer than the heater. Our solution was to run the washer on a hot setting and reduce the temperature on the water heater. Right now we just have a whole house filter installed in the inlet. We did have a Water Drop scale inhibitor installed,but it leaked and had to return it to Amazon for a replacement. Definitely on the homestead priority list as we have very hard water. All in all we have been pretty happy with the heater. Super easy install except for cutting a hole in the logs for the vent.
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Reviewed in the United States on May 23, 2024 by Jeffz Jeffz
Material Type: 3.6 GPM, 80,000 BTU, Indoor
Style: Natural Gas
I would have given this 5 stars if the gas would have been 1/2 mip. I ordered this in January knowing that there was a good possibility I was going to need one at one of my various properties. It took me and a buddy of mine longer to drag the old tank water heater out of the house than it did to hook this up. If you value nothing other than time, this took minutes to install. Seriously... we did have to drive a mile to the hardware store and buy a couple of fittings but it took 10 minutes to hang it on the wall and hook everything up. Had they used a standard fitting for gas on this, it would be 5 stars. If it makes it 5 years it deserves 5 stars. Haven't even read the instruction yet, we just hooked it up and plugged it in and it worked so much easier than a tank water heater. I think I'll order a second one.
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Reviewed in the United States on March 21, 2024 by usern4me
Material Type: 3.6 GPM, 80,000 BTU, Indoor
Style: Propane Gas
UPDATE: I have abused this machine for almost a month now running it at max temperature taking 2 10 minute showers each day between me and my partner. It is extremely efficient, we use small 5 gal propane tanks that and they last roughly 2-3 weeks of us using them a lot. We also hand wash our dishes and it still manages to last super long. This is one of the few indoor built instant propane water heaters on this app and website. It does not disappoint, the price tag reflects the quality. It gives instant hot water and works amazingly as advertised. I've been using this for showers over the past week and it works great. It is super easy to mount and although it doesn't come with the fittings and proper connections for gas or water you can easily find these at your local hardware store. It will cost a little extra but I guarantee after you try it you will love it. I have this unit mounted in my camper that I live inside all year around and it is the greatest upgrade I've done to this place.
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Reviewed in the United States on March 29, 2024 by Ian Z.
Material Type: 3.6 GPM, 80,000 BTU, Indoor
Style: Propane Gas
Easy to install, and with a couple of fittings propane hooked up in no time. Very easy to adjust the temperature too. And it works with my 12-v water pump.
Reviewed in the United States on July 6, 2025 by pia cummins