Superior Pump 91660 Tankless Water Heater Descaler Pump Kit with Non-toxic Descaler Solution, 3.5 Gallon, Deluxe

Saved so much money doing it myself. Kit was great. Everything fit right. Just watched a YouTube video beforehand. Super easy and simple

Worked great! Not noisy, good quality, easy to use!

This has all items to do a quick flush of your Tankless water heater. NOTE: The equipment is of excellent quality.I am more than glad I purchased it.FYI- Your will need a pair of needle nose to pull the screen out of the incoming line if you have a Stiebel Tempra 29 PlusTankless water heater.

Overall, I'm satisfied with this kit, which I bought to descale my Rinnai RE199iP propane-fired tankless water heater for the first time (1 year after installation). The kit comes with a 1/6-hp submersible pump, two 6-ft braided water hoses with 3/4" female garden hose connections, a small bucket, and a packet of Dezcal descaler powder. The bucket is convenient for storing all of the components, including the pump in its box. The manual is well-written in English, and clear, and includes both instructions for descaling and general specs for the pump. You can also find some good videos online to walk you through the process.My Rinnai manual called for 4 gal food grade white vinegar, so I used that instead of the descaler powder, though I could only fit 2 gal in the bucket. The braided hoses were good quality and made secure connections to the brass bypass fittings on my water heater, though connecting the supply side to the pump outlet was a little tricky to get threaded properly, as the fitting on the pump is plastic and swivels freely. The pump operated smoothly and effectively (be sure that the output hose is secure in the bottom of the bucket before you plug in the pump, as the flow is quite strong).Per the water heater manual, I also checked the burner flame, tested the overpressure relief valve, and vacuumed out the interior of the water heater during this process (my unit does not have an air filter).My only minor gripes are: 1) The cord should have a switch on it to make it easier to turn the pump on/off without plugging/unplugging. 2) The pump and hoses can be purchased separately for quite a bit less, so the kit is not a great value. Overall, though, I'm happy with the purchase.

I followed the Rinnai hot water heater's flush instructions... and the instructions on the pump's plastic bucket container... and I took my time doing every step. I did not force any valves open or closed. My Rinnai unit is 3 years old and this was the first time I tried to open/close valves, and they were all stuck. I removed the plastic caps on the valves, and I used a really small adjustable wrench to delicately open/close valves without the caps (meaning, I applied very little pressure on the wrench to open/close valves), and that worked.In the end, everything worked perfectly. No spills. No damage.Before I started the process I cleaned my Rinnai water heater's water filter, and I did that again after the flushing. The flushing actually caused a bit of gunk to get caught by the water filter, and so I'm happy I cleaned it before and after the flush.Based on the reviews for other pumps, it sounds like these pumps frequently fail in the near future (next few times they are used), and so I'll update this review after each flush to let you know how long these pumps last. I'm going to flush my hot water heater once a year. Going forward, I'm also going to toggle (on/off/on, off/on/off) my water heater valves once every 6 months to reduce the chances of them sticking again in the future.When I was done with my water heater flushing, for about 30 seconds I then ran fresh clean water thru the pump that exited into an outside drain. I'm hoping that will prolong the life of the pump. Meaning, I ran a garden hose to the bucket to fill it with clean water, while I simultaneously used the pump to pump the clean water from the bucket to a drain using a second garden hose.

This kit and a youtube video on our Navian had me comfortable flushing it and getting to know its operation MUCH better. I was going to buy the components and do it myself, but you can't actually buy everything you need for what this kit costs. The buck is really nice with a screw lock lid and once you're done, put everything back in, leave it near your water heater... and have it ready to go next time. Excellent value.

Worked as expected from the description. I did feel they put to much effort into the PPE section of the instructions but better safe than sorry. The only suggestion I have is to warm up the hoses in some hot water because they are a bit stiff and hard to work with.

I was reluctant to do this myself but for less than half the cost of calling a 3rd party service and then almost free going forward, I had to give it a try. It was a piece of cake. The hardest part was turning the small water valves on and off. I had to work them back and forth to free them up. After that, just hook everything up and let the pump run.