Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: so how do you tell when it's ready to have a cartridge change
Document: It is hard to tell if it is working as with any filter BUT I do think there is less clouding of the dishes in the dishwasher and that is what I wanted.
The Aqua Pure was recommended to filter the scale from my water prior to it entering the tankless water heater. Replacement filters are easy to find both locally and on the internet. There seems to be some confusion regarding the filter's life expectancy. Some sources say to change the filter every six months. Some say six months to a year. Some say once a year.
I got one of these to protect my water heater and increase the lifespan of it. The T is very easy to install, I used PEX so the male adapter screwed right in with some teflon tape and popped right on the 3/4&#34; lex after that. Then just screw in the filter and make sure you change it every 6-8 months. Super easy to install and doesn't leak.
I wish I had more hands so that I can give this product 4 thumbs down!!! Wish can give this product no stars. I can't tell you how the product work, looks, smells, feels,or even tastes because I waited a month and never got it. They promised me that it was on it's way two times and even said that they shipped a second one. If this happens to you, don't hold your breath, cause your not going to get it.
Installed approximately a dozen of these descalers on new tankless heater installations. Haven't received any complaints so far. As far as installation is concerned, make it easy for yourself and install an isolation valve before the filter for ease of cartridge replacement, this is assuming you bought the valve kit for your tankless heater. Makes for a two minute replacement. Manufacturer suggests replacing every 6 months...Regardless of the descaler, flush your tankless heater once a year....
for $65, they should include two carts, not just one. i don't think i'd try to find an alternative (i.e. : a hardware store T-fitting), but it's with noting the excessive cost.
for $65 + $25 for refills, even if this adds 5% to the life of my tankless hot water heater, it has a good ROI. indications are that it can -- and will -- do much more than that as well as benefit the rest of the system when using hot water.
We bought this one to replace the one we installed in our house when we built in 2004. Can't say enought about how great this unit is...excellent water pressure &water temps. Like the protective filter. And digital readout.
We appreciate the customer service that HomePlumbing gives and stands behind. They following through on their promises giving top quality service. From the research that I have done for the Aqua-Pure products, they are top of the line for protecting the tank less hot water systems.We have several friends and family members that are considering the purchase of/ are already have a tank less water heater based on our high approval of the system. We will recommend that they purchase an Aqua-Pure from HomePlumbing.
This will help aid in the fight against scaling in your tankless water heater but is not a complete solution. You should still flush you water heater at least once or twice a year with white food grade vinegar. I have a whole house sediment filter on where water comes in then this on right before the tankless heater.
Answer: no