Rheem Continuous Flow

I purchased my Rheem Pronto 16 in 2020. By November 2022 the unit had completely died and was replaced under warranty. Rheem had planned to leave me and my ill wife without water for a week but my local plumber stepped in and replaced the unit for me and billed Rheem. Fast forward to March 2025 and the replacement unit has now completely died. I… Read more

have called Rheem who charged me $200 for a call out and won't be able to come for a week. So me and my very sick wife can enjoy cold showers for a week. My local plumber unfortunately refuses to deal with Rheem because they are to hard to deal with. A dreadfully useless unit and disgusting completely careless customer service. I can't wait for the next unit blow up in 2 years and my warranty has run out. Crap unit anyway. Takes forever to heat water and uses way to much water.

The worst heating system I’ve ever had – Since being installed it takes 20 minutes to heat up, the red fault light has come on twice, it it ticks over like a motor trying to start have rang plumbers who installed it 3 times and rang the fault line with rheem 4 times and all they keep saying is there is nothing wrong with it After receiving the message from Rheem it took a couple of… Read more ·  1

months as the original plumbers still kept saying that nothing was wrong with the system a new plumber was found and turned out that the system was faulty. So since changing the system i have had no problems with the new one at all works perfectly fine. Id like to thank the people that messaged me for their help great customer service

Great customer service – When my unit Rheem 20 started to leak and it was only 5 years old I was very unhappy when plumber who installed it said I would need new one without opening it but I insisted that I want it checked with Rheem and to my surprise after some misunderstanding from my side they send a tehnician who found that the heat exchanger was gone and that was covered by warranty and they changed it same day So impressed Thanks Rheem Show details

rheem hot water continues flow – HI Our RHEEM continues flow hot water service is a REALLY GREAT HOT WATER SYSTEM we bought it on the 5/6/2017 & have never had 1 day of trouble COMPARED to our BOSCH which was pure HELL no other word for it. Copes well under high demand & definitely no WATER FLUCUATION its a RIPPER. Mr Kerry Locking. I WOULD GIVE THIS HEATER % STARS. Show details

defect product – I recently purchased a flat that came with a Rheem Flow 16 hot water heater (manufactured in 2018), and I've been experiencing frequent temperature fluctuations during showers and while washing dishes. This issue seems common, as many others have shared similar complaints in their reviews. The product appears to have a defect. When I reached out… Read more

to Rheem customer service for assistance, they only offered a call-out service at a cost of $270, with no other support. Based on this experience, I would not recommend purchasing Rheem products.

Dangerous, incompetent should be banned selling it – This has been replaced 3 times recently in 2021. The first time couldn't get Hot Water in Shower could smell Gas like I was been gassed. The hot water has trouble coming on in kitchen or Bathroom taps and Laundry taps. The Washing Machine can never use it Hot Water machine fail to run as water not going through. The Rim Pronto always flashing Red… Read more

Light nonstop can hear the flame lighting on and off. The Machine is rather dangerous when if you lucky after 20 MINUTES turning tap on or and off you get Really Hot Water then it back to cold after putting tiny bit of cold. I then go for the same thing again waiting 20 Minutes to get 15 seconds of Warm to Hot Water. I am thinking of making a video buying a new Hot Water System not from Rheem and taking Rheem Pronto 12 off and using a sledgehammer on it.

Absolutely worst ever! – I had nothing but trouble with the Rheem Pronto16. I was told less than 1yr of purchase it had a manufacturing fault but I could not replace it with another model or get my money refunded. It's always fluctuated severely with off & on freezing or really hot water as you use it..burning yourself or freezing you! Now it's packed up completely! I… Read more

will never buy a Rheem again because of terrible product quality and terrible customer service. I won't even rate it 1 star it's been that bad!

Appalling customer service - unit broke after a few months – We purchased this unit in Nov 22 and the fan came on everytime you turned on the water - hot or cold. 3 plumbers have looked at it and all say it shouldn’t be doing that and to call Rheem. Rheem want to charge me $200 for coming to look at a unit I have already paid people to look at - Show details

No good at all – Water temp goes from scalding hot to ice cold. Maybe after 1 minute. Wait 5 minutes and it comes back. For another minute. Huge waste of water. I did find that on the lowest heat setting and by continually adjusting the cold water flow I can get a reasonable shower however it should not be that way. Now it makes a funny vibration when heating. The… Read more

unit is only 3 months old. I sadly miss the old aquamax hot water tank I had for over 25 years but I fell for the adverts. I am at the point of throwing the rheem away and going back to the old tank style. Total waste of money and time. Never again.

Warranty not worth anything – Bought a Rheem hot water system in May last year - by March this year it had broken. When it was initially installed it took a long time for the hot water to arrive but we would put up with that. When it broke our plumber replaced it as we did not want to wait or pay for Rheem to come out, believing that a less than 12 month old system should… Read more

still be under warranty. Our plumber then returned the system. Since then we have had no help from Rheem. I have left 5 messages, all of which go unanswered. I would never buy a Rheem again.

Rheem Pronto 12 Useless – Takes ages for hot water to arrive at tap because water flow is used to light pilot, what a stupid idea! By the time I have finished washing my hands, the hot water starts coming through it takes that long. When having a shower, the same issue arises, hot water takes ages to arrive, then during the shower the water temperature continuously… Read more

fluctuates from too hot to too cold and I find myself continuously adjusting the hot and cold tap throughout the shower which is extremely frustrating. I wish I had have chosen a Bosch like our last gas hot water service which lasted over 20 years without any issues. WHATEVER YOU DO, DO NOT BUY A RHEEM, YOU WILL BE FRUSTRATED AND EXTREMELY DISAPPOINTED UNTIL YOU RIP IT OFF THE WALL AND SWAP IT FOR A BOSCH.

Rheem Pronto 16L – Bought my Rheem 834016N0 in August last year when my old Bosh of 12 years was on the way out. Wish I had of done more research as it is the worst purchase I have made in a long time. If you have the tap running at too high a pressure it wont go hot. if you have it too low it wont go hot. At times you finally get hot water and it suddenly goes cold… Read more

again. Takes us about 1/2 a bucket of water to get the hot water going in the kitchen for dishes, that is if it will go hot. So many times we just end up boiling the kettle. have rung Rheem and yep they have sent out a technician and he worked on the system and great the hot water goes great in the laundry where it is close to the system, but alas still having the same issues. If i could afford to I would junk it and get a different one. I suspect these were not designed for Australian conditions or Australian large houses. It appears to be more for a small unit where there is not much water pressure nor much distance between the hot water service and the outlet.

Update: Have had a technician out a few months ago, and the issue appears to have been us as we were not turning the tap on enough. Like most people I am used to turning the tap once and getting hot water. With these you have to turn it on to very high pressure. This means using a lot more water. However even with this method we still find it hit and miss as to when it decides it wants to work.

I would swap it out, but it seems like continuous flow is the go with all brands and I don't want to spend more money on another continuous flow when I just do not like the way they work at all.

Poor operation, really bad service, lazy technician – Unit would work one day, then not the next. Rheem service were hopeless. Technician called and told me to try things to avoid turning up. Bought another brand. Don’t bother.  Show details

Don't waste your money – Takes 5 -15 mins to ignite, temperature fluctuates. If you adjust the water heat or pressure it cuts out and won't relight. Have had Rheem technician out, and it still won't work. Needs a stupendous amount of water to keep it alight (our water use has tripled since the Rheem pronto was installed) Service person advises to take the flow limiter… Read more

out of our water wise shower head! Definately DO NOT buy this water heater if you don't want to waste water and time.

Frustrated and disappointed – I purchased our Rheem 24 Metro was fitted August 2017 only 3 and a half years ago. It has not worked properly for 1.5 years. i would turn shower on and no water at all from hot tap. AFTER THIS Rheem sent a tech out and he fitted a 500kp pressure reducer valve before unit and we started getting hot water but next day had to get another tech… Read more

because it was going hot then cold in shower. he said he needed to remove water savers from shower heads. So OK KNOWN problem now fixed. NB new houses built in SA have a pressure reducer valve fitted in build.

Waste of water – Tales for ever for hot water to flow, wasting valuable resources. Known issue? Inherited the unit when I bought the house 3 years ago. I am now being suggested water heaters with heat pump technology is the way to go. Show details

Nice and warm – I recently had issues with my Rheem Pronto 12 so I had it replaced with a Rheem 12. Great decision because it works perfectly. My other Rheem kept having issues but Rheem support did their best to help me out at all times but it was more plumbing related that it didn't last all that long. Very happy with the new unit. Show details

A terrible buzzing sound terrible service since January still not fixed in August – I moved into a new property at 985 Heidelberg rd Ivanhoe in Melbourne that has 2 of these commercial units installed. The hot water is good but we get a strange buzzing been emitted from the hot water service room which wakes me at night 4-6 times. It lasts for anything up to 20 minutes, I have recorded the sound and video showing the sound is… Read more

coming from the same unit. We have had a plumber attend on 5 occasions and Rheem have come out on 4 occasions. Every time Rheem have come they suggested 4 different reasons for the buzzing sound. The latest was the flue which they replaced , shortly after doing the work the technicians noticed that the sound had NOT been fixed and suggested yet another reason for the sound. I am extremely frustrated as I now have to wait and call the plumber who will come back and say nothing is wrong before they will do anything. They are now even saying that this product only has a 12 month warranty which is extremely poor. I will never purchase another Rheem product as the service and products reach a new level of incompetence.

I have been just advised by My plumber he thinks it is a fire risk and have lodged a formal complaint with Rheem and they still have not done anything

Woeful service !

NB Rheem please do not bother with the cut n paste reply you have enough information to address and fix this horrible buzzing sound that wakes me 30+ times a week.

Bipolar works when it wants to – Unit is 5 years old Works when it wants to Error 11 code keeps showing Contacted Rheem on 4 occasions To no help at all send technician no one shows Just going to change to a Rinnai Must be a problem unit if other people showing up with same codes Show details

Every 3-4 months or so I get the same issue – Please ban Rheem from answering questions in this forum... No hot water and the temp of the (cold) water flashes up instead of the preset temperature. Last time I called Rheem, they got a plumber out and it miraculously started working as he arrived. He still did some "troubleshooting" for 45min which cost me dearly. Should I reset? Turn on the water with the terminal turned off? Show details ·  1

Rheem Electronic Continuous Flow Gas Water Heater 20L – Hi... Our hot water system not working since 1and half months even after the visit by plumbers advised for the whole unit change for the amount of $1400 after discount due service delay. Please advise if it is so expensive.? Show details

No one knows how to fix the Rheem 16 – Runs off bottle gas, 8 years old. We have to turn water on/off dozen times before it starts. Plumbers don't know how to fix it. Anyone know how to fix ? Show details

Useless piece of junk – This system wont work in the daytime when the sun shines on it. I can't find a plumber who has any clue how to fix it. I would love to know the secret for why this fault exists. I have replaced the power point outside and the gas pressure has been increased but still no luck and no hot water unless its dark outside.  Show details

Cold showers guaranteed – I had a continuous flow installed in beach house, average in terms of reliability but thought I’d update the copper at farm and have had nothing but trouble. Takes at least 2 minutes to start heating, very unreliable, farm is in alpine region so walking out to reset not much fun in sub zero temperatures. This unit has barely been used however has been nothing but trouble since installed and rheem dont stand by products. Avoid, avoid, avoid!  Show details

Absolutely rubbish – From the start 29.9.2015 so now,7 mth out of waranty.This unit was usless from the start zero heat could not clean or bath ..shockin. called ex.... plumber - he said there at that degree for safty .ie day care nursing home. Well what.!!!he came in put his hand under tap? .Now also i said the water waste waiting for the hot to come is absolutely… Read more

shocking waste so bad. He left no help .Now as of may 2018 its now not working Rang.rheem service just dont help at all other than scripted ...oh service agent ect out of warranty..There waranty agent main..... comes out cleans? It 95$ next day not working .Now its a water inlet body assembly .Quote $411 part plus 3 hr fit $300 .or look swap to a Rheni $1100 there better we only have trouble with the rheem.

This is a shocking unit has been the worst unit in my whole 50 years of hot water experience .To think not only i lost money the water bills ova the years,waste of water and total hell with greasy dishers cold water .Terrible service not good enough rheem. Where dose this leave me ripped off 3and a half yrs .mad.as......

Unit is not delivering hot water – The capacity is good, but it’s not hot. The shower temp in morning is ok, not hot, but at night it is at best Luke warm. Plumber tells me it is working to spec but if this is spec then sorry but I would not recommend it. Rather frustrated and disappointed.  Show details

Hot Water not hot – Our Rheem 27 876 series does not deliver hot water. It is not hot enough to take a bath, wash the dishes or do the laundry. It also takes so long for the hot water to come through which wastes water. It doesn't feel like it is 50 degrees which is stated as being the factory setting. We moved into a new build in November 2017 and tolerated the… Read more

lack of temperature through summer but we are feeling the effects now it is winter.

I am not happy with this Rheem hot water system.