# Rinnai Central — user reviews > 170 indexed App Store user reviews of Rinnai Central by Rinnai America Corp, rated 1.60/5 from 341 ratings. - Source: https://appshunter.io/ios/app/rinnai-central/id6444321202/reviews - App overview in markdown: https://appshunter.io/ios/app/rinnai-central/id6444321202.md - Rating breakdown: 5★ 34 · 4★ 9 · 3★ 12 · 2★ 18 · 1★ 268 ## What do users think of Rinnai Central? Overall sentiment: negative **Pros** - 🚀 Works great - 🚀 Much improved - 🚀 Fantastic - 🚀 Working perfectly now **Cons** - 🐛 Doesn't work at all - 🐛 Bug in 4.3.0 - 🐛 Awful. Just terrible - 🐛 Lousy App - 🐛 Rinnai does not care - 🐛 Horrible app - 🐛 Worst app - 🐛 Horrible - 🐛 Terrible app - 🐛 Total fail - 🐛 Crashes on launch - 🐛 Cannot connect to Bluetooth! - 🐛 Very Disappointing - 🐛 Bluetooth option?? - 🐛 Broken - 🐛 Not good - 🐛 Defective app - 🐛 App does not work - 🐛 Useless APP - 🐛 The application does not work. - 🐛 Unimpressed - 🐛 IT DOESN'T WORK - 🐛 Absolute junk. Don't buy Rinnai - 🐛 Renders water heater useless - 🐛 Written by a company that cares more about advertising than functionality - 🐛 Won't connect. - 🐛 Can't even create an account - 🐛 App is useless - 🐛 Use the reset button! - 🐛 Buggy registration - 🐛 Doesn't work - 🐛 Worthless w/o Module 200 - 🐛 Worst. App. Ever. - 🐛 Pain to troubleshoot - 🐛 Poor - 🐛 Cannot create account even - 🐛 Does Not know - 🐛 Frequently isnt in sync - 🐛 Doesn't work - 🐛 Worthless - 🐛 Mostly Broken, Hasn't Worked for Days - 🐛 Doesn't work for new models - 🐛 Garbage app - 🐛 Terrible - 🐛 Junk - 🐛 Pain to troubleshoot - 🐛 Poor - 🐛 Barely works - 🐛 Where's the beef? - 🐛 Have to buy a device to use - 🐛 App does not y - 🐛 Rarely stays connected - 🐛 Crap - 🐛 Recirculation doesn't work after latest update - 🐛 I can't get it to work with voiceover - 🐛 None of these apps have world - 🐛 Absolutely garbage - 🐛 Doesn't load on 26.1 right now **Commonly reported bugs** - Control failed is still happening in latest version - Login screen freezes - Incompatible with older devices **Most requested features** - Add device through Bluetooth missing - Dark mode option - Advanced analytics dashboard ## Newest reviews (17 of 170) ### 4/5 — Easy upgrade, mostly good UI improvements, but… (updated 5/3/26, see bottom) *2026-05-03, version 5.0.1* I discovered this new app and installed it. Upon logging in to the account originally created for Control*R, Rinnai Central immediately found my two water heaters, downloaded the schedules with complete accuracy, and noted the fact that one was in vacation mode. Excellent upgrade behavior! The UI is pretty easy to use and straightforward, although there are some useless advertisements and promotions on the homepage. My issues are: 1) The manual recirculation still does not work, in fact, it seems to be even worse than the Control*R 2.0 app after it degraded to 5 minutes max. 2) Options for manual recirculation are very coarse. It jumps from two hours to four hours, but I really need closer to 2 1/2 hours to run the dishwasher. The UI is easier than Control*R, but functionality has decreased. 3) This is a quibble, but after losing granular control for manual recirculation, the app provides up to the exact minute settings for schedules. This is awkward to use, and, at least for me, offers minimal value over the 15 minute increments on Control*R. Why wouldn't 5 minute intervals be adequate? The interface would be much easier to use! Overall a good step forward, and I anxiously await the fix for manual recirculation! Update 9/12/23: I downloaded the new version that was supposed to fix the instant recirculation feature. I stood next to the heater and started instant recirc … nothing happened. I started it using the old ControlR app and it started. NOT FIXED!! Update 11/19/23. Downloaded version 3.1.4(4) and still cannot control manual recirculation! STILL NOT FIXED!! Update 3/2/26: the server was down over the weekend and couldn’t login or control the Rinnai. Before I called for support this morning I tried once again on both Rinnai Central and Control-R. They both worked. Far more importantly, both recirc now and get status worked on Rinnai Central for the very first time!!!!! Maybe there’s hope for the flower after all. Give it a try again and report back here so we all can know. Update 5/1/26: Major visual design changes on version 5 home screen. (Following statement not true, see update below—Return to home screen after selecting from more than one heater is not simple as before, requires accessing menu then selecting personal account.) Lost a star from my rating. Update 5/3/26: discovered a black on black left arrow in the upper left corner on a heater’s page. It returns you to the main home page. Putting the star back. ### 2/5 — Really *2026-04-29, version 5.0.0* App was updated to clean up and get rid of non pro accounts making it harder for the homeowner to make changes on the unit ### 3/5 — Rinnai Installers said app and module were trash *2026-04-27, version 4.3.0* I just had a RXP199 installed by the largest installer in the area. The installers said the app and module were trash and don’t waste my time. As bad as it is Rinnai has ignored these problems and has not fixed anything in a year. If you plan to fix or not to fix you should tell us. ### 1/5 — Does not work AT ALL *2026-04-15, version 4.3.0* Terrible app. Can’t believe the company does nothing to fix it. Ask ChatGPT and it will tell you the app sucks. You are not alone having zero success controlling your unit. Had I know I would never had bought a Rinnai system. Complete garbage ### 1/5 — Useless for homeowners *2026-04-12, version 4.3.0* Apparently only professionals are able to connect to Bluetooth or WiFi module which is a backwards policy. They will only need the feature intermittently. I, the homeowner, will need the capability frequently. Truly mind-boggling product design. ### 1/5 — Totally useless *2026-04-10, version 4.3.0* What great potential, yet a missed opportunity. You can’t do anything unless you have a wireless module. Then, if you do decide to lay out the extra $200 or so, a homeowner still can’t do anything! The tankless water heater has built in Bluetooth, but Rinnai reserves that for pro installers only. Would be nice to at least access via Bluetooth just to see what your settings are! No. Folks, don’t waste your time. ### 1/5 — Run Away *2026-03-19, version 4.3.0* Any company that makes an app this bad and useless and misleading should not get any business. Period. I have serious buyers remorse. RUN AWAY! ### 1/5 — Trash *2026-03-07, version 4.3.0* If I could give this app 0 stars, I would’ve. Why bother putting out an app?? This is appsolutely garbage. ### 1/5 — Cant log in *2026-03-03, version 4.3.0* The app doesnt work for me. I have tried everything, but can not get passed the login page ### 4/5 — Easy upgrade, mostly good UI improvements, but… *2026-03-02, version 4.3.0* I discovered this new app and installed it. Upon logging in to the account originally created for Control*R, Rinnai Central immediately found my two water heaters, downloaded the schedules with complete accuracy, and noted the fact that one was in vacation mode. Excellent upgrade behavior! The UI is pretty easy to use and straightforward, although there are some useless advertisements and promotions on the homepage. My issues are: 1) The manual recirculation still does not work, in fact, it seems to be even worse than the Control*R 2.0 app after it degraded to 5 minutes max. 2) Options for manual recirculation are very coarse. It jumps from two hours to four hours, but I really need closer to 2 1/2 hours to run the dishwasher. The UI is easier than Control*R, but functionality has decreased. 3) This is a quibble, but after losing granular control for manual recirculation, the app provides up to the exact minute settings for schedules. This is awkward to use, and, at least for me, offers minimal value over the 15 minute increments on Control*R. Why wouldn't 5 minute intervals be adequate? The interface would be much easier to use! Overall a good step forward, and I anxiously await the fix for manual recirculation! Update 9/12/23: I downloaded the new version that was supposed to fix the instant recirculation feature. I stood next to the heater and started instant recirc … nothing happened. I started it using the old ControlR app and it started. NOT FIXED!! Update 11/19/23. Downloaded version 3.1.4(4) and still cannot control manual recirculation! STILL NOT FIXED!! Update 3/2/26: the server was down over the weekend and couldn’t login or control the Rinnai. Before I called for support this morning I tried once again on both Rinnai Central and Control-R. They both worked. Far more importantly, both recirc now and get status worked on Rinnai Central for the very first time!!!!! Maybe there’s hope for the flower after all. Give it a try again and report back here so we all can know. ### 1/5 — 02/28/26 *2026-03-02, version 4.3.0* Since the 28th the app has stopped working can’t even login. Man what is up with this app now of days ### 1/5 — App is BAD *2026-03-02, version 4.3.0* Don’t use this app because it doesn’t work. Login problem because after login, nothing happens, app continues to show login and stays there. ### 1/5 — Unable to access app *2026-03-01, version 4.3.0* Unable to access app after providing user information. Trying to install RWM200 but cannot access app to connect wireless module. I’ve tried both Rinnai Central and Rinnai Control-r 2.0 and neither work. ### 1/5 — Useless *2026-03-01, version 4.3.0* Can’t reset password. Confitmation field is locked out so you cant edit the password. My tank is no longer in my app so i cant adjust the schedule. ### 1/5 — Can’t even create an account *2026-03-01, version 4.3.0* When prompted for the verification code, I enter it exactly as it appears in the email sent to me and it just gives an error of invalid code. ### 1/5 — Can’t login *2026-03-01, version 4.3.0* Maybe it is ok. I don’t know. I registered. It sent the code. It took the code and that is it. It never logs in. Tried changing password three times and no luck. Pointless app ### 1/5 — App does not work *2026-03-01, version 4.3.0* Can’t even log me in past the verification code. ## Most critical reviews (10 lowest-rated) ### 1/5 — You have to register as a pro to connect to Bluetooth *2026-06-05* I’m not sure how this oversight occurred but to be able to actually connect to a tankless water heater that has Bluetooth, you must create a professional account and tell the app that you install water heaters otherwise if you register as a consumer, you will NOT see the option to connect to Bluetooth. Also you cannot control the settings of the water heater unless you go through a “quick setup” each time and the app says the warranty can be voided if you don’t give it the “correct information” whatever that means. I cannot believe the lack of usability of this app. You might as well not have it. ### 1/5 — Laughably terrible *2026-05-16, version 5.0.1* This is a absolutely terrible app. After spending $100 for the wifi module i am shocked at how terrible this is. The metrics it gives you are delayed to the point of uselessness. I wont buy another Rinnai thats for sure. ### 1/5 — Fix your garbage app *2026-05-06, version 5.0.1* Zero. Worst app and customer service ever. Avoid at all costs if considering a tankless water heater. ### 1/5 — The app doesn’t connect *2026-05-05, version 5.0.1* Horrible, it doesn’t work. I’ve tried repeatedly to use the serial number and registered the product but it continues. He says it’s an invalid serial number. ### 1/5 — I don’t care to have notifications *2026-05-04, version 5.0.1* Quit trying to force me into adding notifications to the stupid app ### 1/5 — Keeps asking to accept notifications *2026-05-03, version 5.0.1* Before I can use the app, it asks to turn on notifications even though I have selected no notifications. It is an extra step for an app that already has extra steps, just to use the circulate option. ### 1/5 — New Version 5.01 - Just as Broken *2026-05-02, version 5.0.1* You do get a confirmation from the app when firmware successfully updates - I think that’s new. Of course, you have no idea whether the new firmware is any different than the old firmware because the version isn’t reported (seems just as fragile, but this is Rinnai). Otherwise, nothing else seems different. Same unwavering commitment to maximizing the amount of cold water poured down the drain. ### 1/5 — Doesn’t work *2026-04-30, version 5.0.1* You have to enter a bunch of personal information to use this to run a device you already own, then it won’t connect so it doesn’t matter. (But they already have your info.) ### 1/5 — Terrible app *2026-04-30, version 5.0.1* Either the app or the actual module are terrible. The app shows that the WiFi connection is lost multiple times a week and sometimes per day which requires power cycle from the module to reconnect. Works less than 40% of the time. ### 1/5 — Useless *2026-04-19, version 4.3.0* App is useless. Can’t add units. Bluetooth doesn’t work. Asks for unnecessarily personal information. I just want to change the temp on my home’s water heater. I shouldn’t have to provide a corporation with my phone number. And if I do, the equipment should actually work. ## Most praised reviews (10 highest-rated) ### 5/5 — Finally seems fixed *2026-05-24* After a year of fighting connectivity issues with this app, it finally seems like they may have finally fixed it. It’s been working for a while now. Whoever has been working on all of the recent app updates, it’s very much appreciated ### 5/5 — Updates are great!! *2026-04-30, version 5.0.1* Thanks for the latest updates. Working much better. ### 5/5 — Better *2026-03-06, version 4.3.0* Much better app than the control R so far. I had issues with the control R suddenly won’t let me log in. Had a chat with Imelda from Rinnai and fixed my issue with the log in with Central. She even sent me the latest RWM200 and 2 recirculate buttons for free and stupid fast shipping. ### 5/5 — Fantastic *2025-01-23, version 4.3.0* Love the app. ### 5/5 — Works great!!! *2025-01-23, version 4.3.0* This app gives you remote access from anywhere in the world with Wi-Fi or cell service. Set recirculation schedules and push button start for instant start to pre warm the loop. ### 5/5 — Much improved *2024-08-01, version 4.0.8* As a plumber the new RWM200 and Bluetooth capability is night and day compared to the older model controllers. It is also nice to connect to the unit via Bluetooth to set the parameter ### 5/5 — Working Perfectly Now. *2024-06-02* The latest version that I have (4.0.6) is working great. It took many versions by Rinnai tech team to get it right but I’m very happy with this app now. Hats off to the team that made all the necessary changes. **Developer response:** We have been experiencing some issues with registration and the 6 digit authentication code. If you will send an email from the associated email address to rinnaicentral.iossupport@rinnai.us with the subject Verify, we will verify the account and you will be able to log in. We apologize for the inconvenience, and are working on resolving this. ### 5/5 — Update *2024-05-04, version 4.0.4* App works much better than the old one and easier to use ### 5/5 — New version of App works for me! Thanks! *2023-09-08* New revision fixed the error I reported earlier. Thank you!! Review amended! I tap “start recirculation” and after 5 seconds it pops back to “start” from “stop.” I’m still using the old App. Please fix the new App so the on demand actually works. Thank you. **Developer response:** UPDATE: The recirculation feature has been fixed in Version 3.0.6. PREVIOUS: Thank you for your feedback. We are aware of the bug and we are in the process of validating a new release that corrects this issue. We will update this response when that becomes available. ### 5/5 — My control-R is finally usable! *2023-08-26* With the old Rinnai app I was unable to connect my control-R module to my wifi network. The app would just crash during the pairing process. Nice to see this working! Granted I only use the app to set the water temp and check the heater’s status. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*