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Reviewed in Japan on March 4, 2025
こたつのヒーターが壊れたため、交換しました。とても簡単に交換でき、暖かさももんだいありません。良い商品でした。
Sultan
Reviewed in the United Arab Emirates on February 21, 2025
It’s not work why!!!I am just turned on the switch burned in my handCan I am turned back???!
Robin
Reviewed in the United States on March 1, 2024
This warmer works perfectly. There's multiple heat settings that you can use. Buyer Beware: this product does use Japanese Voltage. Although similar to US, not exactly the same. As an amateur no nothing electrician, from what I understand, the Kotatsu will just run hotter because of the amount of US Volts. That is why I only keep it on the low settings, and it's plenty hot enough to enjoy. I don't think a converter is needed if you keep safe and use low settings.The item is simple, works, and is what I needed for DYI kotatsu. Also, if you have your own traditional frame, this will easily fit in the square to replace an old one.
ノーザン ウヤ
Reviewed in Japan on September 4, 2023
コタツの温度調節がイマイチで購入 使いやすい、温度調節も細かくできて良かった
Chris Tastalk
Reviewed in the United States on December 28, 2023
I decided to turn my coffee table into a kotatsu, and bought this heater for the project. It was very easy to drill onto the bottom of my table. I left a 2 inch gap between the heater and the table, though it's probably not necessary to have that much space. During the winter I throw a comforter and a wood top over my coffee table and cozy up. During the summer, I simply unplug the cord and store it, you would never know the heater is there unless you're literally on the ground. The velvet coating is a nice touch as I occasionally brush my legs against it (and it never gets too hot!), and the wrapped cord feels to be made of quality. I live in the USA, so the electrical output is a little stronger than what they use in Japan. I didn't bother buying a converter, I just don't increase the heat past the first or second setting, and that's more than enough. I've had this since 2021, and it's still working great. Highly recommend!
Readaholic
Reviewed in the United States on September 15, 2021
I bought this to attach to a table I modified into a Kotatsu and hooked it up to the PowerBright 500 Watts Japanese Voltage Transformer, and it's worked fantastic! There was a shipping hiccup and they sent me a new one right away, and it was super easy to install. I use it all the time and this is the second year I've had it, no issues whatsoever! It gets very warm so I usually don't leave it at the highest heat setting, but I've never been unhappy with the temperature or amount of control; it heats up and cools off quickly when I adjust the remote. My table is about 3ftx4ft with a comforter and a tabletop that fits on top, and it heats up that space within 5-10 minutes even in winter. I'd definitely recommend this product!
Vikki
Reviewed in the United States on March 15, 2021
Really great heater, and really easy to install. Even on the low setting, it is very warm. We don't use a converter, and just use it on the low settings. Seems to be working fine, although wish there was a US version of a mountable heater like this! A little pricey, but good quality.
お父さん
Reviewed in Japan on January 3, 2021
20年以上使っている三菱電機製こたつがファンがうるさくなってきたので、買い替えを検討しましたが角丸の天然木の天板で満足するものがなかなかなくて困っていたところ本品を知りました。さすがに古いこたつなので、電源ソケット部分の切り欠きが必要になりましたが、サイズもピッタリででっぱりもなくファンの音も殆ど聞こえないほど静かで、弱以下でも十分に暖かいです。ひとつ改良して欲しい点は、コントローラの温度調節のダイヤルがツルツルしていて滑って回しづらいところです。それ以外は、お気に入りのこたつが蘇り、大変満足しています。
Arcadia
Reviewed in the United States on December 15, 2020
Honestly, this has been the best investment. I DIY'd a Kotatsu with this heater using an IKEA Lak table, 4 L brackets, and a King sherpa blanket. I did not purchase a converter, however I do not use it on any setting higher than a 1 and I NEVER leave it running unsupervised. The instructions are in Japanese but there are pictures that make installation very easy. It has kept me super warm and has served me very well in the 2 months I've had it.
武藤 英治
Reviewed in Japan on December 10, 2020
温度調整は、問題無い。暖かさは、とても良い。静音性は、問題有り。テレビ等の音声が無い場合には、コタツに入っていると耳障りである。
Reika B
Reviewed in the United States on November 23, 2020
I made my own kotatsu by attaching this heater with angle brackets to a secondhand coffee table (with a square comforter and piece of butcher block for the top. It works well, and my kids (who haven't been to Japan and thought I was crazy) really enjoy sitting at it. You will want a step-up/step-down converter if your country's voltage is different from Japan's. I bought this one:https://www.amazon.com/gp/product/B000PC4SVU/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1
1-lap around jpn
Reviewed in the United States on January 12, 2020
Using this part was able to build a kotatsu at a affordable price. If you can read Japanese it comes with good documentation. When I first got this unit it seemed so small and simple compared to the old kotatsu from the 80s that I grew up with. But after using it I think that it’s great. Dispite it’s size it can heat the kotatsu very well. I rarely use it past the 弱 or weak setting. I’m in the US using with out the transformer and not having any issues. I don’t think that your going to have any issues unless you use it cranked up to the strongest setting for a prolonged period of time.
Customer
Reviewed in the United States on January 19, 2019
Works great, I love it, my cats seem to like it too, but there is a picture in the instructions with a cat and a big X, I'm just going to assume that means no un-supervised pet use, but if I'm there I'm not kicking the cats out, and I do unplug it when I'm not there.I am (in the USA) using a step-down transformer, which I think is a good idea, I imagine that if one was sure to avoid the highest settings it could work at US line voltage but I'd rather not take a chance.The controller has some mystery settings (various size circles) before one gets to the numbers, the numbers control the heat like one would expect, but on the circles the heat seem to be off but the fan is on, I could understand a cool down mode but why more than one? No English at all in the instructions, but except for those setting it is self explanatory.
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