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Hot water and Everpure Water Filtration System

16 years ago

We have a small instant hot water heater in the break room for our office. When our Asko model D3120 dishwasher broke down after only 2.5 years (repair bill: $300 plus 4 week wait for parts), we were told (by the repairman) that the machine should be connected to the hot water rather than cold. Two years later the hot water quit and after much delay we have it restored: today I was informed that we have an Evanpure Water Filtration System model H-104 installed. Why that should fix the hot water problem is beyond me, but we do have hot water. However, the first thing I saw in the material handed to me (after the plumber departed) is that the system is for cold water only. I'm sure it's no mistake, as it is plainly written in three languages. The materials also included a note that the unit will last longer if it is used with a separate faucet for the filtered water. I never asked for a filter to make the water taste better, which is what this unit appears to do.

So: I'm wondering if this unit will continue to function with hot water. There is a note about connecting it to an instant hot water system, which makes me wonder about the instructions that it is for cold water only.

The unit does claim "Inhibits limescale buildup in water-using appliances -- as tested by Everpure." The water in this city has about 18 GPG, so that feature may help with the dishwasher.

Anybody have any thoughts or suggestions?

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Comments (4)

lazypup
16 years ago
When using both a water filtering system and a point of use water heater the filter should be connected to the cold water before it enters the heater. This will help eliminate lime scale buildup on the heater coils as well as filter the water. In this configuration you could also tee off a separate line after the filter to supply a filtered cold water faucet.
User
16 years ago
While lazypup is correct about the order of installation, I see absolutely nothing in the Everpure filtration unit you specified that will reduce scale buildup. As far as I can tell from the info on their website, this filter is a pleated media coated with GAC. It should remove chlorine and particulate but not dissolved minerals. It does claim to remove oxidized minerals, which would be in particulate form, but will not eliminate buildup of hardness deposits. Only a softener can do that. Using this unit to filter hot water feed to a dishwasher is an entirely inappropriate use for the filter. It will cost you money and provide no benefit. Even if the filter is installed upstream from your water heater, it won't help with mineral buildup. It will likely even cause a problem, since it is rated at only 1/2 gpm flow rate.
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Be aware that RO water is "aggressive" and is not recommended for certain appliances, including many refrig water systems. It will "eat" the internal workings. Educating yourself thoroughly by doing some Googling will also help, rather than depending upon the very subjective customer responses we can find here. Getting opinions on a stove is one thing; getting opinions on drinking water when the quality of municipal water varies so greatly, is another. That said, an undercounter single filter system is usually more than adequate for most municipal systems. A dual-filter system can handle almost any water filtering needs. We've used an RO system for drinking water, but it bothered me how much water was wasted - we live in CA where droughts are common. Also, our municipal water system ranks very high in quality, so we switched to a single filter system (GE SmartFilter) and have been very happy with it. Be aware that any filter system is only as good as the filters being used. Change them every six months without fail or you're wasting your money. Therefore, make sure you can obtain replacement filters easily at the least cost. Some systems use proprietary filters; others use generic filters you can get in most hardware stores. GE's website has a very good overview on what the differences are in the filtering qualities of the 4 different types (RO, single, dual, and faucet). It's probably a good place to start. Here is a link that might be useful: GE website: Filtration system specs
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trekker
Original Author
16 years ago
As it turned out, the unit was installed between the cold water intake and the water heater. However, now I wonder about the first plumber (highly recommended by the bldg manager) who apparently didn't realize that the filter could have been part of our problem. That wasn't his only deficiency.

And of course aliceinwonderland is quite right about that claim by Evenpure that it might reduce scale buildup. What nonsense.

This entire experience has been particularly galling because of the incompetence of various building managers as well as the dumkopff who did the initial installaion. What we have spent on repairs is really infuriating, not to mention the time we have spent without hot water (almost a month) or a dishwasher (six weeks -- that was a year ago).

Anyway, I won't work there forever and I guess I just need to not worry about it.
trekker
Original Author
16 years ago
Turns out that the Everpure filter was installed in the hope that it will extend the life of the instant hot water heater. I have no idea if it will. If anybody has a better idea, please speak up. A water softener is not an option, obviously that would be the best solution.

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