Zojirushi CV-JAC50XB 5.0 Liter Water Boiler and Warmer

Curated from 167 real Reddit conversations

Refreshed on: April 18, 2025

Zojirushi CV-JAC50XB 5.0 Liter Water Boiler and Warmer

Brand: Zojirushi
Price: $251
Snoop Score:
9.1
Sentiment
9.0
Popularity
9.9
Technical
9.2

Snoop's Take

The Zojirushi CV-JAC50XB 5.0 Liter VE Hybrid Water Boiler and Warmer is designed to provide instant hot water at the perfect temperature for various needs, from teas to cooking. Users appreciate its quick temperature settings, convenience, and durability, with one stating, "Trust me - it's incredibly convenient and durable and you'll save so much time." Many users also highlight its consistent performance and the enjoyment of features like music when the water is ready, making it a highly valued appliance in homes, especially for those requiring hot water frequently. With overwhelmingly positive feedback about its reliability and effectiveness, the Zojirushi CV-JAC50XB is highly recommended for anyone looking for a top-quality water boiler and warmer. Consumers have noted its long-lasting durability and excellent customer service, further solidifying its place as an indispensable kitchen appliance. If you're in the market for a reliable water boiler, this product is a standout choice based on user experiences.

Not for you? Check out our other rated Combination Water Boilers & Warmers

My wife returned from a work retreat with a hickey. She swears it’s a bug bite but I’m not convinced

Positive Feedback

I have never used the zojurosji dispenser but I love their rice cookers.

Negative Feedback
Product
9.1
Zojirushi CV-JAC50XB 5.0 Liter Water Boiler and Warmer
Tea Brewing
10 / 10
Coffee & Instant Drinks
9 / 10
Entertaining & Offices
6 / 10
Family & Child Safety
8 / 10
See how this compares to all Combination Water Boilers & Warmers

What it does well!

Key strengths users can’t stop talking about.
Instant hot water dispensing
My wife returned from a work retreat with a hickey. She swears it’s a bug bite but I’m not convinced
I ate at every Michelin-starred restaurant in Chicago. Here are my thoughts.
Yeah, this is just what we need - - - someone who rents a GC 4xe for 10 days and then thinks that he knows it all.
It’s a great car (not perfect but what is?) and works well for our family of 4 (2 in car seats).
Adjustable temperature settings
I believe you can set the temp you'd like.
Overall the vehicle got 22mpg while mostly on esave to charge the battery.
Convenient and durable
Trust me - it's incredibly convenient and durable and you'll save so much time.
Zojirushi heaters are definitely the cadillac of water heaters and for good reason.
Multiple uses for hot water
No kidding! And not just for tea.
Durable and long-lasting
We’ve had our zoji since 2001… never had a rust issue! Huh.
Durable and long-lasting performance
My kids use it all the time and love the little song when it's done.
I had my prior zojirushi for 15 years and I just gave it away because it wouldn’t die and I wanted the newer one with neuro fuzzy.
Consistently cooks rice perfectly
Not only does it do rice perfectly every time, it stays warm without toasting it, and I can program it to start cooking at the right time for dinner too.
Do you just leave the rice in the cooker for a whole day/overnight? I sometimes do that and the rice is always awful after (with a cheaper one)
Excellent customer service with replacement parts
I cut one of the mugs sealing rings in a weird kitchen incident and was able to get the specific, exact part and *only* that part from them.
Enjoyable features like music when cooking is done
I like the little song it plays when the rice is done.
Time-saving for formula preparation
I have been using the zojirushi for formula prep for the past couple weeks and it has been such a time saver.
Highly valued appliance
worth its weight in gold. I have one and it's one of my most used appliances.
Common household appliance in Asia
It’s really interesting to see an all-English interface on the machine since they usually comes with Japanese.
Effective descaling methods
My Zojirushi water heater needed a descaling, normally I would match brand name to brand name, or obvious imagery (such as the typical design of a water heater)
I just use generic citric acid to descale my stuff, no matter the brand
I descaled mine by filling it half with white vinegar half water, letting it come to boil, and then draining on the slow setting.
I use citric acid. Just as effective, but no vinegar smell!
Perfect rice every time
If you like having all the extra rice settings and want to experiment with more styles of mixed rice get the Cuckoo.
Reliable customer service
They respond quickly and has accommodated most of my requests.
Highly recommended compared to competitors
I’ve never had to use customer service for Zojirushi. I’ve never heard of Cuckoo, but growing up, everyone had Zojirushi and it never failed anyone.
Durable performance over time
Mine has been on for five years.
The machine works just as the day I bought it, have been using it for 3 years.
I do and have for over a year. No issues as of yet.
Yup. I keep it on 175/195 most of the time. I did the same with my last one, and the lid was the only thing that gave out after 7-10 years.
Long-lasting durability
Lasted him 15 years, until he donated it to the office to get the bigger model.
25 years and probably 2500 batches of rice later, and it looks brand new.
High-quality manufacturing
I see their products being used for decades.
Japanese manufacturers always seem to have a “let’s make the best product we possibly can” mindset.
Enjoyable features like music when water is ready
It plays a cute little jingle when the water is ready
Instant hot water availability
It's awesome having hot water at the perfect temp whenever I want it.
I use it to poach vegetables, water down homemade soup concentrates and stocks, etc.
but do they heat to same level as electric ones?
Convenient and durable design
I've driven other hybrids that use small engines to charge the battery......this doesn't even do that.

Where it needs some work!

Areas to watch—feedback on possible improvements.
Water may not be hot enough
I have never used the zojurosji dispenser but I love their rice cookers.
Rust and build-up issues reported
Has anyone else had issues with rust and build up on their Zojirushi water heaters? We've had our CD-JWC40HS 4L for about 3 years.
Cleaning required to ensure safety
You're supposed to dump and clean it daily per the manual.

Compare On All Talked About Dimensions

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Core Power Plays

The specs and strengths that make it shine.
Observation of differences in product linings
Thanks, I'll look for it. Their newer stuff seems to be with this grey lining, to include a thermos we got.
Insights on machine durability and simplicity
Turns out to be the Omron relay, which is still produced and available on Digikey.
Heavy usage over five years
Is there a good way to clean up the lime and rust buildup?
Overwhelmed by product information
Interesting. I went on the website and was overwhelmed lol.
Preference for kettle-shaped designs
Ideally, I would like something more kettle-shaped for easy poring from a short height.
Discussion on preheating for optimal performance
I have a 1 liter thermos and so far it is nice, just be shure to preheat it and put hier temp.

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.
Curiosity about keeping rice warm for long periods
Eternally warm rice waiting for you on your counter?
the regular keep warm setting, or the extended keep warm setting? I need to try this.

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Comparison with electric kettles
Electric kettle or hot water dispenser? Which would you rather have?
Electric tankless water heaters. Are any of them actually good? Everything I read says the electric ones are crap.
Discussion on cleaning procedures
Is citric acid part of the recommended cleaning procedure?
Zojirushi water boiler - am I sol? I went on vacation for a week and forgot that my water boiler was plugged in with only a small amount of water left.
It’s just water scale nbd. Wash it out with water and use a descaler like vinegar if water doesn't remove it.
Look at the inside of any coffee maker or kettle. They’ll be way worse, if it bothers you that much vinegar or citric, or just put water in it and use it.
Discussion on price value compared to cheaper options
I just can’t imagine there’s much room for improvement there, so do people buy them for longevity?
It’s genuinely exceptional from the Z and I’d never be able to go back.
I am NOT the Original Poster. That is u/Turbulent_File3914.
Effective cleaning method using citric acid
It's a white powder used in cooking (non-toxic!) and is incredibly effective at descaling calcium and lime buildup like what you have here.
It has a cleaning mode.
Concern about maintenance frequency
mine has to cleaned every month or 2 because i can see the little floaties inside my mug
Found at a thrift store for a low price
I found this Zojirushi water boiler at the thrift store today for $10!! I just stopped and thought “no way”
I was at the thrift store today and saw this Zojirushi boiler just sitting on the floor. I’ve been wanting to buy one for the past few years, but I couldn’t justify the price tag since I’m a student and I don’t really need it… until I found it for $10! My expectations were super low and I wasn’t expecting it to even work, but I cleaned it with vinegar inside and it’s working great!!! It has temperature options too
Comparison with other brands and models
I'm getting a Vevor water boiler. Never owned one.
Did you get the vevor? How's it holding up?

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Comparison with college experiences
it just doesn't seem like a good idea.
I do use my Zojirushi more than my undergrad degree.
Cultural references to rice cooking experiences
while my rice cooker is tiger brand. We do have quite a bit of Zojirushi brand thermos and soup bento thermos in my house.
Inquiries about boiling temperature for safety
Does the boiler reach boiling temperature each time (to kill the bacteria ) and then it will reach and maintain the set temperature say for 160 to make formula?
Concerns about cancer warning label
something about P65…?
Speculation on the source of the warning
I think (and I could definitely be mistaken) that this refers to the rubberized/plastic power cord. As long as you don’t floss with it after eating your delicious rice, I’d think you should be fine
Cultural significance of brand loyalty
Cuckoo rice cookers are to Korea what Zojirushi rice cookers are to Japan.
Yes Zojirushi has more global influence because they sell massive numbers in China and Taiwan and US, but Cuckoo is highly recommended in a lot of reviews too.
Concerns about leaving it on 24/7
I just bought the VE hybrid model but I’m not sure whether leaving it on all the time would be ok
No, I have one on my desk and I turn it on in the morning and pull the plug before I leave.
Concerns about potential quality decline
It was also the only vaccum sealed model, which meant that it would save me money on electricity in the long run.

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