Part # RTG20299AV

@@dadjobs5275 I do agree they are pretty neat!

We try our best. Thanks :-)

We hope it helps :-)

Thank you good sir.

We greatly appreciate that.

@@dadjobs5275 Yes, I went ahead on highlighted the area with black marker and sanded off the raised letters so I could read them.

Thanks Mike. Glad you enjoyed it.

That's fantastic Donna! Well done! So the contractor really had no idea how to fix the problem, or at least how to figure out how to fix it? That's disappointing.

Thanks for checking out the video and providing the feedback. Definitely will check out the 30 seconds outdoor cleaner next. Always glad to hear of new products to try out :-)

Mold Armor is way better than 30 seconds Outdoor cleaner in my experience. Mold Armor has been my go to for all deck and house washing. The key is, dwell time. I will spray it on let it sit for a few mins (10-15 mins) then spray off....Perfect results everytime. The 30seconds outdoor product doesnt seem to have as good of a concentration as Mold Armor. Thank you for your videos. I am a Father as well and do not have time to mess around when it comes to maintaining my house projects. I need stuff to work and work well the FIRST time. Im sure you know exactly what Im talking about. Lol

Something told me not to be cheap. I was going to grab that 1

Glad it was helpful!

Greatly appreciated Katie!

Thanks Katie! Cheers!

Well done sir

Thank you Justin! Greatly appreciated.

Fantastic! Thank you for commenting Calin. Yes it seems that tankless water heaters generally have similar pieces and make up so hopefully this video will help many. Thanks again.

Hi avigilavigil. Actually I had been meaning to do it this past year and will for sure be doing it in the spring. Thank you for the reminder and mention. Please come back and let us know how it goes. Also look for our video on how the flushing goes this spring.

Hi Thanh! Thanks for watching and we hope the video helped. That's a great question and we will make sure to include that information in the video and description in the future. So the part number in the manual is "Component No. 9". I don't remember if when I called Rheem if they asked for the part number or if I just told them that it was the "Mixing Valve" and they knew what the part was. You can see the manual here www.tanklessking.com/index.php/mwdownloads/download/link/id/743/. Also the Rheem support phone number is 1-800-621-5622.

Found it, for this particular model in the video: RTG2029AV.

I think it is actually RTG20299AV

Thanks for this video. Very helpful. An identical version of this water heater is offered by Noritz as their model NRCP1112-DV-LP which I have had since fall 2017. The Noritz part number for the mixing valve is NPD056. I also recommend replacing the O-rings. The small one is NPD036 and the larger is NPD033. I’m not sure who really makes these units. Its easy to find these parts on the internet. My valve was $136. Disconnect power before starting work. As you can see in the video, the circuit board is in the way. The bracket that holds the board is secured by three screws that come in from the bottom. Take those out and the whole board assembly will swing forward and down, out of the way. This makes the valve replacement very easy. Of course, when you get the error 45 you have no hot water and you probably don’t have a replacement valve handy. This is very inconvenient. So here’s what I did to temporarily restore it while waiting for my new valve to arrive. On the bottom of the unit, about 3 inches from the front and centered there is a dimple extending down for the water leak detector. Any leaking water pools in the dimple and triggers the detector. I drilled a 1/8” hole in the dimple taking care not to hit the detector itself. The slow leaking from the valve dripped into a pan below and did not trip the detector, allowing hot water to operate. Yet, if a big leak started it would overwhelm the little hole and trigger the detector. Here’s another problem I encountered. Error 60 hot water abnormality. This was caused by an unusual failure of the recirculation pump. Noritz said replace the pump even though I could feel it vibrating as if it was running. I replaced the pump and all was well. I noticed on the replacement pump box a sticker with the words “new impeller”. So, I disassembled the original pump and found that all the plastic blades on the original impeller were all broken off. The impeller disk was spinning in water, but not actually pumping it. With no flow, the heat exchanger overheats and you get error 60. A temp solution for this is to turn off the recirculation modes. In summary…when the unit is working, its very nice and efficient. But, I live in a rural area and there’s no one available who knows how to service it. Plenty of people can put them in….but no service is available. So, as an engineer I learned to do it myself. This is a complex device with fans, pumps, electric valves, sensors, and a computer board that runs it all together. Plenty of stuff to fail. Mine worked perfect for three years and I’ve now had three no-hot-water failures in years 4-6. If I could roll back the clock I would put in a simple propane tank heater that I can get serviced and probably won’t need it. When I get fed up servicing this unit, that’s what I’ll do. This is a water heater for city dwellers who have support available, IMO.

Fantastic! So glad to hear it, that's why I wanted to build this channel of DIY fixes, products and projects. Thank you for the comment, please like and subscribe for more to come 👍

Thanks for this video. Very helpful. An identical version of this water heater is offered by Noritz as their model NRCP1112-DV-LP which I have had since fall 2017. The Noritz part number for the mixing valve is NPD056. I also recommend replacing the O-rings. The small one is NPD036 and the larger is NPD033. I’m not sure who really makes these units. Its easy to find these parts on the internet. My valve was $136. Disconnect power before starting work. As you can see in the video, the circuit board is in the way. The bracket that holds the board is secured by three screws that come in from the bottom. Take those out and the whole board assembly will swing forward and down, out of the way. This makes the valve replacement very easy. Of course, when you get the error 45 you have no hot water and you probably don’t have a replacement valve handy. This is very inconvenient. So here’s what I did to temporarily restore it while waiting for my new valve to arrive. On the bottom of the unit, about 3 inches from the front and centered there is a dimple extending down for the water leak detector. Any leaking water pools in the dimple and triggers the detector. I drilled a 1/8” hole in the dimple taking care not to hit the detector itself. The slow leaking from the valve dripped into a pan below and did not trip the detector, allowing hot water to operate. Yet, if a big leak started it would overwhelm the little hole and trigger the detector. Here’s another problem I encountered. Error 60 hot water abnormality. This was caused by an unusual failure of the recirculation pump. Noritz said replace the pump even though I could feel it vibrating as if it was running. I replaced the pump and all was well. I noticed on the replacement pump box a sticker with the words “new impeller”. So, I disassembled the original pump and found that all the plastic blades on the original impeller were all broken off. The impeller disk was spinning in water, but not actually pumping it. With no flow, the heat exchanger overheats and you get error 60. A temp solution for this is to turn off the recirculation modes. In summary…when the unit is working, its very nice and efficient. But, I live in a rural area and there’s no one available who knows how to service it. Plenty of people can put them in….but no service is available. So, as an engineer I learned to do it myself. This is a complex device with fans, pumps, electric valves, sensors, and a computer board that runs it all together. Plenty of stuff to fail. Mine worked perfect for three years and I’ve now had three no-hot-water failures in years 4-6. If I could roll back the clock I would put in a simple propane tank heater that I can get serviced and probably won’t need it. When I get fed up servicing this unit, that’s what I’ll do. This is a water heater for city dwellers who have support available, IMO.