Kelaro Tankless Water Heater Flushing Kit - Just add Vinegar Descaler

I have a very large new external Rinnai heater and this was my first self-service 6 month descaler attempt. I ran the circulation for 45 minutes and after only 6 months I didn't notice anything unusual in the vinegar after completing the process.A review I read mentioned the included Kelaro bucket is insufficient, so I had a backup 5 gallon bucket standing by.However, 2 gallons of Costco white vinegar in the included Kelaro bucket works perfectly.The Kelaro instructions corresponded to the Rinnai instructions which coincidentally instructed to use 4 gallons of white vinegar, instead of only 2. But, 2 gallons was fine.Perhaps even 1 gallon would work, since the Kelaro pump works great, As long as you ensure the red hose is submerged close to the bottom of the pump, I assume the vinegar would circulate fine with only a gallon. I bet the red hose could be weighted at the bottom of the bucket to ensure it was flowing directly into the bottom of the pump. 2 gallons seems like a safer bet to ensure the pump is always pumping vinegar - in case you step away and the red hose moves, etc. And, vinegar is relatively cheap. The pump will possibly break without liquid running through it, of course.I also read in a review to pump water through the whole system to clear vinegar from the pump and hoses before storage - before moving onto the stage of clearing out any vinegar from the heater. So, I went ahead and utilized the backup 5 gallon bucket and moved the pump (disconnect the power first, of course) into it and took 10 minutes to circulate water. You could of course also do this with the included Kelaro bucket. Always make sure to unplug the pump if removing it from liquid.Lastly, I moved onto the instructions to clean vinegar from the heater, which at that point was pretty redundant. A couple five gallon bucket fill-ups later and the water coming out of the heater tasted fine. I watered some plants :) and dumped the vinegar down my bathroom sink drains as a probably useless gesture to help dissolve gunk.All in all a great kit, even if it's too expensive IMO. Easy enough for the mechanically disinclined to use.Set aside a good 1.5 hours to complete the job which incudes staging everything and cleaning up when your done. An extra 15 to write the Amazon review haha.

This is very easy to use, and I am not a person who knows anything about plumbing. I was nervous, so I watched 3 different You Tube instructional videos and still had my daughter help me. We both agreed that it was a pretty easy process. It takes about 10 minutes to hook it up and get it ready, then it does its thing, and another 5-10 minutes to disconnect. All I needed was a pair of plyers, since some of my valves were hard to open and close. There was no mess to clean up; I just took 5 minutes to rinse the hoses and pump after and let them dry before putting away.I have 2 tankless water heaters that I had installed about 5-6 years ago. I paid over $100 each to have them flushed each year. Last year the price jumped to over $300 (EACH! so yes, over $600!!!) Prices have only gone more crazy since, so I'm sure it's even more now. I have well water; I know I can't just let them go without cleaning.Now that I have the kit, it's just a matter of 3 gallons of vinegar for each unit, and I'm good to go! Yes, like everything else, the price of vinegar has doubled recently, but still, it cost me <$20 not >$600. Even if you are rich, or kinda lazy, just do this. It's no big deal, and it just makes sense. The hoses and pump fit in the bucket with a nice sealed lid to keep them clean and easy to store until I need it again next year. I just wish I'd done this from the very beginning!

I was hesitant at first because I had never owned a tankless system before. After using this I am mad I didn’t sooner. Let me explain.My tankless heater was a huge investment. I knew that I needed to descale it periodically from my installer giving me the details. I was concerned because I priced the service for e professional to do the service and was shocked at the cost. For my area it would have been $400-$500 dollars. This product was totally worth the investment. The ease of use is ridiculously simple. 2 gallons of vinegar and instructions so simple it took less than 5 minutes to install. Per the instructions you run for 45-60 minutes, flush and then use the tankless per normal. I did experience a slight leak at the hot side of the unit but I can’t be sure that the product was at fault or I had it installed but it wasn’t enough to cause an issue and I was able to complete the task with no issues. After letting the unit and hoses dry I have it stored for another use at a later date. Definitely would recommend you protest your investment and get this for your tankless

Simple clear instructions

The price I paid was a little high, but worth it to get everything in one bundle. The pump is strong. It is perfect for residential tankless hot water heater maintenance. The pump ran vinegar continuously through a tankless hot water heater for over an hour. I did not try it with a stronger descaling chemical. The Pump did start to heat up significantly as the water circulated. The hot water heater was off, so the pump itself generated the heat. The pump seemed to weaken after being stopped to cool it off. Be sure to clean all parts with clean water and let air dry before storage. The vinegar or descaling chem will cause rust and corrosion.

I did my first DIY tankless flush this year using this product. It worked as described. I did have to use one of my own buckets since my tankless called for 4 gallons of vinegar and the actual bucket wasn't large enough. It was nice to have for storage though.

This kit was perfect. Hooks up easily. Pump worked flawlessly. Bucket is plenty big.

I needed to descale our electric on demand hot water heater. This kit is made to do just that. Easy to hook up and let it run for at least an hour or so. I used straight vinegar and it just plain works. We own another house in Texas that has a gas on demand hot water heater which I will descale when we get back down there. Seems a little pricy but I believe you get what you pay for. You can pay a plumber big bucks or purchase this kit and it will pay for itself straight away.