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WH-AZ018-M3 ENVO Atami 18 kW 3.5 GPM Tankless Electric Water Heater

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  • Requires two 40 amp double pole breakers
  • Uses 18,000 W of power at 240V
  • Supplies kitchen faucet, bathroom faucet and shower
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Product Details

About This Product

Ensure you have hot water when you install this WH-AZ018-M3 ENVO Atami 18 kW 3.5 GPM Tankless Electric Water Heater. It provides you hot water on demand and uses less energy while doing so. This is a compact design that can fit where you need it. Place this under the sink, in a vanity or in a closet.

Highlights

  • Heats up right when you turn on the tap
  • Hot water volume is not limited like in tank-style units
  • Water is not sitting for extended periods in a tank, getting heated and reheated
  • ETL Listed
  • Heats water only when you need it; no preheating and no standby heat loss
  • Compact design fits in tight spaces like cabinets and closets
  • No limescale build-up
  • Automatic memory function
  • Over-temperature protection
  • Water and electric separation
  • Limited lifetime warranty
  • Ships from warehouse within 24 hours of order processing
  • Professional installation is highly recommended
  • Get it Fast - ships from warehouse within 24 hours of order processing
  • To speak to a knowledgeable and dedicated ANZZI specialist simply call 1-844-44-ANZZI or visit us on the web at www.ANZZI.com
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 320592561

Model # WH-AZ018-M3

Specifications

Dimensions: H 15.16 in, W 3.54 in, D 10.24 in

Dimensions

Product Depth (in.)

10.24 in

Product Height (in.)

15.16 in

Product Width (in.)

3.54 in

Water Connection Size (in.)

3/4” NPT

Details

Amperage (A)

75 A

Application Type

Residential

Efficiency Level

Super High

Electricity Phase

Single Phase

Finish Family

Silver Metallic

First Hour of Delivery (gallons/hr)

9999

Flow Rate @ 35°F Rise (gallons/min)

3.5 gal (US)/min

Flow Rate @ 45° Rise (gallons/min)

2.8 gal (US)/min

Flow Rate @ 55° Rise (gallons/min)

2.4 gal (US)/min

Flow Rate @ 65° Rise (gallons/min)

1.9 gal (US)/min

Fuel Type

Electric

Heat Exchanger Warranty

Lifetime

Indoor/Outdoor

Indoor

Maximum Temperature (F)

125 F

Minimum Activation Rate (gpm)

0.85

Minimum Temperature (F)

86 F

Number of Elements

1

Number of Showers

1-2

Pack Size

1

Power Options

Hardwired

Product Weight (lb.)

12.28 lb

Required Volt Connection

240 volt

Returnable

90-Day

Uniform Energy Factor

0.95

Water Connection Location

Bottom

Water Heater Features

Digital Display, Overheat Protection, Wall Mounted

Wattage (watts)

18000 W

Warranty / Certifications

Certifications and Listings

ETL Certified, ETL Listed

Labor Warranty

Lifetime

Part Warranty

Lifetime

Questions & Answers

48Questions
caret
Q:Hello. It's said because of the mounting bracket it has to be mounted vertical. Is that the only reason or will it do something to the internals if mounted horizontal?
by|May 18, 2024
1 Answer
Answer This Question

A:  Hello! The mounting brackets on the WH-AZ021-M3 ENVO Atami 21 kW 4 GPM Electric Tankless Water Heater require vertical installation to properly secure the unit, which is required for warranty. As the unit was not intended/certified for horizontal installation, you would be doing so at your own risk. For any other questions or concerns, please reach out to our Tech Support team. Our phone number is 1-844-442-6994. We are open 8:30am – 6:00pm EST Monday thru Friday. Thank you, Anzzi.

by|May 21, 2024
    caret
    Q:Can this unit be mounted horizontally?
    by|Mar 29, 2024
    1 Answer
    Answer This Question

    A:  Hello! It is not recommended to install the WH-AZ027-M3 ENVO Atami 27 kW 4.8 GPM Electric Tankless Water Heater horizontally as the mounting brackets are made for vertical installation. For any other questions or concerns, please reach out to our Tech Support team. Our phone number is 1-844-442-6994. We are open 8:30am – 6:00pm EST Monday thru Friday. Thank you, Anzzi.

    by|Mar 30, 2024
      caret
      Q:The WH-AZ021-M3 ENVO Atami 21 kW requires 3 30A dp breakers but the photo shows 8AWG witre.. shouldn't 30A take 10/3 wire not 8/3??
      by|Feb 9, 2024
      1 Answer
      Answer This Question

      A:  Hello! While some standards only require 10 AWG for 30Amps, we recommend to use the larger 8AWG wire as installations often require more than 50 Ft. of wire and the larger size is more efficient. For any other questions or concerns, please reach out to our Tech Support team. Our phone number is 1-844-442-6994. We are open 8:30am – 6:00pm EST Monday thru Friday. Thank you, Anzzi.

      by|Mar 7, 2024
        caret
        Q:Hi my house has 1 kitchen sink,a bathtub with a shower in it.could I use an 18 killowatts one
        by|Feb 4, 2024
        1 Answer
        Answer This Question

        A:  Thank you for reaching out to us! Concerning the Model # WH-AZ018-M3. A good suggestion is to please note cold water inlet temperature will determine the GPM Used. If you are in a location where groundwater temperature reaches 50 degrees GPM may drop. Therefore, you will need more power to reach the temperature set. Please always double-check the temperature Map when selecting a Tankless heater. It is best to use the model WH-AZ027-M3 if you are in a location where all seasons are in your area. Please feel free to contact us directly at the number Toll-Free: 1-844-442-6994. Eastern time from 8:30 AM to 5:00 PM.

        by|Feb 7, 2024
          Showing 1-4 of 48

          Customer Reviews

          4.2 out of 5

          • 4.2 out of 37 reviews
          • 77% recommend this product
          Filter by:
          Showing 1-10 of 37 reviews
          loving it
          So far its been installed for 3 weeks and i have to say it works great. No complaints so far. Im an electrician by trade. Did some amp draws with different faucets on. When you run a bath room sink it on draws 20-28 amps, running a shower with a big rain maker head the highest i saw was 52 amps. Waiting to see my electric bill to really know.
          by
            • Recommended
            1 found this review helpful
            We are so excited about this water heater
            We are currently putting in a new bathroom and are excited about this new in line water heater. I am currently waiting on the Electrician to hook up power but the rest of the installation was very easy. The bathroom is a new constructions so we were able to plan out and place the water heater for easy access. The plumbing was pretty straight forward and made the addition of the shower without taxing the house water heater made this the right choice for our project. We did make sure the water flow of the heater would meet the needs of our shower and we are excited to test it out. I hope to post an update after the electrician gets finished.
            by
            I love this tankless
            I am super excited to install this tankless water system. The tankless heater is really small it almost blows your mind to know that this tankless heater release is 4.8 gallons of water continuously. Manufacture provide everything needed for water connections. I just need to get my plumber out here so he can work on it. I can’t wait for a continuous warm shower.
            by
            • Recommended
            Fantastic Water Heater
            This ENVO Atami 18 kW 3.5 GPM Tankless Electric Water Heater by ANZZI is engineered for long lasting performance. The control panel is attractive and could not be easier to operate. The water is heated instantly and continuously, so no large storage tank is required. It is very easy to install, including the mounting, water lines and electrical hook-up. There is a “Too-Hot” prevention to ensure kids do not get scalded with water above 125 degrees. This is the water heater of the future.
            by
            • Recommended
            Just what we need for our garage
            With 5 people living in our home there is always a challenge to have enough hot water and quickly. This unit will be connected to our washing machine and the garage slip sink. This will give us instant hot water there without taking any of the hot water for showers or other uses inside. It’s a sleek great looking unit that supplies instant water anywhere you install it. I’m looking now for a smaller Envo unit that I can connect to my shower and master bedroom sink.
            by
            • Recommended
            Super efficient
            Looks: I absolutely love the look of this instant water heater. The green stands for the eco system and the leaf is a good representation. The amperage on the electric water heater is perfect for a small home. We had a full gas water heater for a 3 bedroom, 2 bath home. It took too long to get hot water to our master bath. With this system once the sitting water passes through, the heated water is instant. So we don’t waste a ton of water. Our water bill has reduced and we have solar panels. Installation required a licensed plumber. Cost was negated. Overall I think this is a great addition.
            by
            Response from ANZZI Customer CareAug 11, 2022
            Hello LeaC! Thank you for your feedback, we are really glad you liked the product. We have a variety of other products within our catalog that we can offer you. Call us with any questions at 305-614-4070 (Tech Support) or email sales@swcorp.com. Our customer service specialist are available Mon-Fri 8:30am -6:00pm EST.
            • Recommended
            1 found this review helpful
            Great compact water heater!
            I was completely blown away by the size of this instant water heater I would compare it to a small briefcase in size. It has very easy to use controls and is simple to set up with an inlet for cold water outlet for hot water and a spot to bring power into the unit. This would be great for anyone who has limited space, but requires reliable hot water.
            by
            • Recommended
            Good Performance and High Quality construction
            As a residential and commercial property manager, I feel like the tankless water heater king, having installed over a dozen point of use electric units over the last 7-8 years. Most installed have been small 6 Kw models to serve a single remote sink, and they get that job done for the most part. Tankless heaters with oomph are 11 Kw and higher, which typically require a new/additional circuit. This Envo series is clearly in that class, providing a cast metal heater chamber rather than the plastic in smaller heaters. Connection nipples are copper in lieu of plastic, and the electrical connections are well located within the housing, providing money-saving convenience with the (2) 8 awg supply wire spec for this 18Kw model. The well-illustrated installation document is superb - something that never happens with cheap, non-branded Chinese models. And the bonus is that it's a very attractive appliance. I installed mine at our office kitchen/utility sinks and it was a breeze. Performance is pretty solid with our 230V service, supplying about 1 GPM of 120 degree water to both sinks simultaneously (with an incoming water temp of about 65 degrees). No complaints to speak of other than a cheap, poorly designed mounting bracket and inaccessible cover screws hidden between the plumbing connections. Also, the heating chamber supply tube is 3/8" which severely reduces the 3/4" plumbing connection flow rate, Buy we still get enough flow for the two sinks simultaneously, so it's ok in our case. I would absolutely choose ANZZI's heaters again for our properties.
            by
            Response from ANZZI Customer CareMay 31, 2022
            Hello SteveH! Thank you for your feedback, we are really glad you liked the product. We have a variety of other products within our catalog that we can offer you. Call us with any questions at 305-614-4070 (Tech Support) or email sales@swcorp.com. Our customer service specialist are available Mon-Fri 8:30am -6:00pm EST.
            • Recommended
            3 found this review helpful
            Great option for all your hot water needs
            The ANZZI ENVO Atami 4.8 GPM 27 kW Electric Tankless Water Heater was delivered by UPS. I have a sixty-five gallon hot water tank that has been functional but I also have a whirlpool tub with jets that takes a lot of water to fill and at times, the water is not as hot as I like it. I researched many types of tankless hot water systems and found that the ANZZI ENVO Atami 4.8 GPM 27 kW Electric Tankless Water Heater was energy efficient and offers hot water on demand verses having to wait for a hot water tank to fill and heat. This unit supplies 4.8 gallons a minute and uses less energy to supply the hot water to the whole house. I have a deep well that supplies my water to my house and it is hard water which can cause issues with a hot water tank plus it uses a lot of electricity. I definitely like the idea of saving water and saving electricity and having an unlimited supply of hot water.
            by
            • Recommended
            1 found this review helpful
            150amps
            Bought one of these last time they went on sale. Really should have done more research on this unit. I'm building a garage for a customer that has a overflow sleeping area upstairs (.5bath/kitchenette). Didn't need a ton of hotwater and space is limited. Didn't open it until my electrician was roughing in. This thing requires 3 double pole 50amp breakers. 150amps on a 200 amp service dedicated to hot water, not happening.
            by
            Response from ANZZI Customer CareMar 29, 2024
            Hello! Thank you for your review. While the 27kW unit does require three dual-pole 40 Amp breakers, we have various sizes and models to fit your needs. All our products come with a limited warranty and satisfaction is our goal. Please contact us for further information to help resolve your issue at 1-844-442-6994 or email arcs@swcorp.com. Our customer service specialists are available Mon-Fri 8:30am-6:00pm EST.
              Showing 1-10 of 37 reviews

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