Why not re-heating?
I check your website once or twice a year, every year, wondering why you’re still not offering the heating systems that go with your tubs.
Nothing from Kohler, Toto, Robert’s Hot Tubs in Berkeley, Zen Baths…..etc, either. I check them all every year.
There’s a huge range of soaking tubs on the US market sold by all the big and small bathtub suppliers. And though Japan and the US both use 110-volt power supplies, not one Japanese or US company has stepped forward to get a digital recirculating heating system into the US market. Nothing is waiting for approval, not even in California where demand would be strong.
Are you aware of any progress being made to make these systems available in the US?
Kind regards,
G.
Thank you for your interest in our Japanese bathtubs!
I appreciate your concern and advice but… we are carpenters… and we are good -only- at producing wooden bathtubs.
If we were reselling mechanical items (produced by specialized companies) our prices would be less competitive than the specialized suppliers plus we would not be able to provide the maintenance service and spare parts.
Consider also that the USA with its huge pool & SPA market can probably provide more advanced equipment at a more reasonable price than the Japanese makers (just my personal feeling)
This is why we prefer not to be involved in heating systems.
(Please note also that a good percentage of ofuros that are ordered by Bartok design`s customers have a larger capacity than a standard 5ft acryl shallow bathtub and the standard hot water heaters with recirculation system -so popular in Japan- would be under-spec.)
Anyway, it is not complicated to implement a system to match the requirements of each project.
Basically is the same as a spa or jacuzzi bath.
You will need a post-water-heater (gas-operated /or heat pump) + recirculation pump + cartridge filter + if you want ozone or UV sanitizer. (you cannot use chlorine – not even from a salt chlorinator)
I recommend contacting a company designing/installing systems for spas.
You can search for the names of equipment companies as keywords: (Jandy, Certikin, Waterways, Hayward, Pentair etc.)
If that company has questions about the compatibility/interface with the ofuro, you can put me in contact with them directly and I will try my best to address their technical questions.
Best//
iacopo
E. M.
2020年8月17日 at 1:55 AMWhen it comes to circulating water and heating your ofuro, you should not use the systems for spas. They are overkill and wildly expensive to run. I came up with a system that I would be happy to share, it uses a small 110 pump that is German, a small gas water heater, and an in-line Clear Blue ionizer. It costs very little to run (4 hours a day) and is very quiet.
iacopo
2020年8月17日 at 1:59 AMThat would be great! Please share with all the readers!!
Patricia Garrett
2020年9月8日 at 5:28 AMYes! Please share your info.– I am in the midst of this very problem and I can’t find anyone knowledgable to help me.
iacopo
2020年9月14日 at 4:49 PMReply from E.M.:
To my knowledge, there is no “package” of supplies to heat and circulate an ofuro. I had an ofuro installed in my home in 1994 with a spa package of equipment that was awful. The pump was very powerfull but noisy, the heater ran on 220 and was inefficient and VERY expensive, so when I had a new ofuro installed I changed course. The operating package I used was put together by a builder friend of mine with an interest in installing a tub himself. The new package is quiet, runs on 120 power, and costs about $20/month.
Rinnai V65IN 6.6 GPM Indoor tankless gas water heater
Rinnai Remote Temperature Controller
Rinnai Horizontal vent terminator kit
Rinnai MIVK-T-LW Matsui Plumbing isolation valves
Rinnai Grundfos Pump with timer
Plumbvent Automatic Air vent
Aqua-Pure SST2HB Stainless Steel water filter housing plus 5 filters
Clear Blue A-400 Ionizer for Spas plus replacement electrode
Intermatic one circuit air switch with timer
I have a Clear Blue Ozone system which I had before and have not installed because you are not supposed to have it on when you are in the tub, although I did for years so I don’t know what the effects are.
Each installation has unique needs so you have to come up with your own package. If people have questions they can e mail me at -> (will supply the contact information of the installer)
* note from iacopo sept.14.2020:
1) Bartok design Co. cannot be responsible for any information about equipment that users you may receive through Everal.
2) Bartok design strongly recommends to agree to a (paid) consulting service with E.M. so that his time and precious information can be compensated for.
Chester
2020年9月19日 at 8:56 AMGood afternoon Iacopo,
I have come to the realization that E.M.’s ofuro system is unique to her situation. Each solution is custom and requires different equipment lists to satisfy the customer. This is similar to your construction of ofuros. Each ofuro is unique to the specifications of the customer. If I supply a schematic/diagram I believe it will only cause confusion since it won’t answer enough of the unique questions each person will have. If someone wants to e-mail me to ask questions, I’m okay with that. I will have to understand their situation before possibly giving advice. I hope that is acceptable.
United States customers are welcome to contact me about the installation of a re-circulation system for ofuros. My full contact information is:
Chester King
chesterkv[ATMARK]yahoo[DOT]com
Thank you very much,
Chester
Chester
2020年9月19日 at 8:57 AMHello again Iacopo,
I am including a very basic diagram for United States customers for filling an ofuro and draining to the waste plumbing.
It is not a re-circulation diagram. Here in the United States our tankless water heaters can easily output water that is too hot for bathing. Rinnai tankless water heaters, for example, can output water as high as 120 Fahrenheit or 49 Celsius.
To prevent a possible scalding accident, a mixing valve needs to be installed to keep the water filling the ofuro at a safe maximum temperature. I recommend a Caleffi mixing valve such as the Caleffi 520 series. I hope this basic information is useful to any of your United States or Canada customers. Please feel free to use it in any way.
https://www.caleffi.com/usa/en-us/catalogue/anglemixtm-thermostatic-mixing-valve-temperature-gauge-520516a
Thank you,
Chester King
jonathan lorch
2022年1月8日 at 6:02 AMGreetings Iacopo-san
I am curious if you recommend your tubs to be kept empty or full when not it use or it doesn’t matter.
Thank you