Resin Water Softener


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Make a more delicious espresso drink today! This in-tank, rechargeable water softener will do the trick. It will remove more of the mineral content from your questionable tap water before it hits the boiler and waterworks. It will work on any espresso machine that has an intake hose down in the water tank. Simply hook it up to the hose and you are good to go.

You can also recharge these resin water softeners by putting one in a glass with a few tablespoons of kosher salt (or any other non-iodized, additive-free salt) and water solution. Depending on your usage and water quality, this could be as often as once per week or less. With the Resin Water Softener, it's easy to keep your espresso machine in tip-top condition!

How Does it Compare?

The Resin Water Softener for espresso machines fits tank style models with an intake hose.


Width 1.75 inches
Depth 1.75 inches
Height 4 inches
Product Weight (lbs.) 0.0750

With a Resin Water Softener you'll have crisp, clean water and the right amount of minerals to extract that ideal espresso shot.


Browse 8 questions and 22 answers
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Will this water softener restrict the flow of water to my machine's pump, and if so, what loss in pressure am I likely to see? (Currently my gauge reads 9 bars while making a shot of espresso. My machine is an E61 HX type.)
A shopper on Jan 16, 2016
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I am looking to use this as a replacement for an RDL espresso machine with an in tank resin filter. Though the description states it can be used this way, it is difficult to see whether there is a nozzle for the hose attachment. Can you please confirm? Thank you
Len Cus on Aug 1, 2013
Best Answer: I just bought one a couple weeks ago, and I'm using it in my Bezerra water tank. There is a nozzle on the filter that my intake hose connects to, very much like other filters that I've found.
Reply · Report · Jeremy B on Aug 2, 2013
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I am looking to use this (or something similar/more effective) with my machine in London. My neighborhood's water appears to be incredibly hard (15 Grains/264 PPM) so I'm wondering if this would even work considering the super high grain level. If not, are there better systems out there? I don't really want to ruin my machine because of London's terrible water...
A shopper on Jan 2, 2014
Best Answer: Hello from the Colonies
My water is right up there with yours at around 12-14
I had the resin softener in my Silvia and it seemed to work fine. Because of the excessive hardness, I recharged it with a salt water flush weekly. I suspect that may be overkill but it can't hurt.
When I moved to the Quickmill Alexia a few months ago, I decided to go with two 10" filters. One softening cartridge and one particle cartridge on a utility sink off the kitchen. The hardness was reduced to 1-2 grains. The main reason was to have soft water for the Technivorm and the electric kettle. I found the hardness strips not accurate enough and am using the Hach 5B Hardness test kit which is accurate to 1 grain.
So, the resin filter appeared to work well and I had no issues.
Hope this helped.
If you need any other info, feel free to ask through Seattle Coffee Gear

Hope this helped
Reply · Report · Stan S on Jan 2, 2014
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How often does the resin water softener need to be changed? Or can it be cleaned? If so, how?
A shopper on Feb 5, 2013
Best Answer: It depends on the hardness of your water and the amount of water used. Do a web search "how to calculate water softener capacity" and there are sites that tell you how to calculate how long this will last. But note this is for a much larger unit.

If you have very hard water and are using this for a coffee shop you will need to use a system designed for household. It can be regenerated by using salt water. Just dissolve some salt in warm water. then you will need to push this through the container. Then flush it with some bottle water for best results.

If you are using city water also add a carbon filter to remove the chlorine.
Reply · Report · John H on Feb 6, 2013
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Can this filter be used with the Silvia?
A shopper on Jun 3, 2014
Best Answer: Absolutely. My tap water is very hard. The resin filter worked great. The boiler stayed in very good condition. I probably didn't have to regenerate the filter as often as I did, but the 5 minutes that it took once a week was good insurance.
Mixed a saturated solution of table salt or kosher salt and dropped the filter in for 5 or 10 minutes. Then flushed with clear water until the salty taste was gone.
Reply · Report · Stan S on Jun 5, 2014
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Does this work for the la speziale machines with the water tank?
A shopper on Aug 15, 2013
Best Answer: I have a Quickmill Alexia with removable water tank. As long as the La Speziale's boiler input hose will fit over the nipple on the resin filter, it should work.
My filter has worked perfectly. I recharge it by siphoning 2 cups of Kosher salt saturated water through it about every two weeks. This is followed by siphoning 4 cups of distilled water to remove the salty water.
Reply · Report · Stan S on Sep 4, 2013
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How often do I need to change the water softener ?
A shopper on Jan 26, 2015
Best Answer: That entirely depends on the hardness of the water that you're using. If you're using pretty hard water, then you will want to recharge it weekly, but if it's fairly soft, and you want to make sure it's very soft, then less frequently will be fine. You can get water hardness test strips to test your water so you can make sure you're recharging it often enough.

According to another user, "It depends on the hardness of your water and the amount of water used. Do a web search "how to calculate water softener capacity" and there are sites that tell you how to calculate how long this will last. But note this is for a much larger unit."
Reply · Report · Stephanie AStaff on Jan 28, 2015
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hello - I need some info regarding this little softener. How is it installed? I have a Pasquini Livia 90 with a reservoir.
A shopper on May 8, 2013
Best Answer: This Resin Water filter attaches to the hose of your machine. For an alternative that just sits loose in the tank, check out the Rocket Resin Filter, at the link below:
Reply · Report · Teri KStaff on May 9, 2013
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Good ProductReview by Symbology
This seems to work well. I don't know for a fact that this device his helping with mineral build up, (have not had to clean it yet). Our water did not have a real high amount of minerals, so this device does not seem to add the salt taste that some report. I think if your water has a high mineral content, then this device would have to work harder and could add more salt flavor to your drink.

It is good piece of mind IMO, and I only plan on recharging it once a month. This is based off of the rate of softening required for my water.

Easy To Use

(Posted on 11/19/2010)

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