Rinnai Infinity Range

Just recently moved into a new build with a Rinnai B20 50degC unit installed. This is my first experience with continuous flow hot water and I would say that the “B type” builders special units are not as good as a hot water storage unit and I wouldn’t recommend it over a storage type as the hot water temperature can’t be controlled effectively when showering as the minimum flow rate is too high to have a warm shower with a 9L/min shower head as the minimum flow rate on the B20 is 2.4L/min from what I have read which means nearly 1/3rd of the water needs to be hot water which doesn’t work when you just want a warm shower in summer and not a hot shower. This means you effectively have to run the tap as straight hot to “pre-charge” the pipe in between with hot water and then turn it down to the temperature you want for a couple of minutes before the water in the pipe runs out and then swing it back to straight hot again to fill the hot water pipe again. Not my idea of an enjoyable shower.

The standard infinity units are probably better as the minimum flow rate rate on these is only 1.5L/min from what I’ve read but it begs the question as to why weren’t the “B type” builders units fitted with the same flow rate switch as the standard infinity unit or is it just a marketing ploy to keep the standard units sales for end user purchases (where the sale is actually analysed and compared against other heating units) and sell “B type” units to project builders who only care about the price and where the end user usually has minimal to no input into the purchasing decision. If so Rinnai are actually doing themselves a big disservice as people will only associate the brand with being unreliable in any new build home where the builders units are fitted and when those people are looking to input into the decision (and they will in the future if they have had issues with their existing unit) they won’t be looking at Rinnai.

We purchased ours in 2012 and love our unit. I love being able to adjust the temperature and know my kids and visitors aren't going to get burnt . Great space saver also for the side of our house. We will definitely be looking to purchase another when we move into our new home next month.

I purchased a rinnai infinity 26 lpg 60 (6) years ago it is and has been the best (in all respects) hot water system I have ever owned and I have owned a lot over (50) years.
I expect it will not last forever but there is not much that does.
It fired up perfectly the first time it was turned on and has been used a lot in (6) years and keeps on keeping on.
Cheap to run.

Finally got a service person to visit and the fan unit is faulty and has to be replaced. Is yours the brand new design with the dark grey contrast sides? Mine is. Service person says a few of these hard a faulty fan unit. Hopefully the replacement with fix it.

Quick to fire up, lots of hot water (58-59 C). The only thing that puzzles me is the odd drop in pressure occasionally as it's firing up. Seems if the internal temperature is below some preset it restricts the flow for a moment until the temperature in the heat exchanger has a certain rise. Once warm (as in washing dishes and such) it really doesn't mess around. I'm pleased. Not excited... as it doesn't have as good a warranty as I had hoped, but the price was fair, the installation quick, and I can basically ignore it and know it's going to work.

Seems to always use excess water to warm up and never seems to stay at a constant temperature when on a lower flow rate. Often during a shower water seems to go completely cold and only way to set to a desired temperature again is to turn shower water off and then resetting the water flow of both hot and cold water, very annoying.

We bought rinnai infinity 26 ... everytime we use the hot water after turn the tap off, the unit whistler for 30 seconds ... very strange ! Never had this with my previous unit is. Is this normal because I ring the service people and they say it is the installer, got the installer out no problem with installation ( licences plumber ). We called back to rinnai with the plumber next to me and they couldn’t help us in any way ... is it normal or not ... I bought this unit as it was recommended but whistling Dixie is annoying ... the service team were rude and said $185 call out fee... if deemed installed wrong ... um it is not ... so I need help.

Have the B26. Since the 1st day it was installed, we've regretted it. Expected the lag, but it uses so much water before it goes hot. Sometimes there is just no hot water at all. Mostly early mornings we need to cross our fingers, but now its during the day and I can't get it on anywhere in the house. The plumber came out twice - nothing wrong. Because it is intermittent, it is a nightmare.
I seriously miss our old tank hot water system. This was supposed to be "the best there is".

I have reported condensation issue on my solar panel and we had Rinnai technician came to fix this issue and they still can't fix this issue and going on with this issue for more than a month now. Why not get it replaced Rinnai? It is a brand new installed and within two weeks we noticed this condensation issue as well as water is not hot. I won't be happy till this solar panel is replaced since you already sent technician more than twice on the roof. Is this quality gone so bad?

12 years ago I installed a Rinnai 32, we were putting in a new extension on the second floor and the plumber advised me to put in a 20mm pipe instead of a 15mm (standard pipe for hot water), for better flow. (Sarah said she had a 25mm pipe in one of the other reviews). We found that we had the same problem, it took ages for the hot water to come through, I consulted another plumber and he pointed out that the bigger the pipe, the more water sits in the pipe and goes cold when your not using the tap. We reduced the pipe back down to 15mm and it made a massive difference. Since then I have fallen love my with my Rinnai, it never runs out, its efficient, it hardly takes up any room unlike my last tank and best of all it has never broken down. Sarah's problem is pipe size, try 15mm if possible. regards Tony.

I am starting to get temp fluctuating from hot to luke warm.I have removed the water saving discs in the shower heads. Also not getting hot water through to the vanity.The unit is approximately 8 yrs old and runs on bottled gas. Do these units require servicing at regular intervals.

Had new house built about 8 years ago and didn't stop to think about what sort of gas hot water system they would supply .The cheapskate builder supplied a Vulcan storage type ,was a bulky tank stuck on the side of the wall and even though i turned the heat control all the way up could only get lukewarm water from day one.
In the summer time wasn't too bad but in winter time not good at all .Decided to get the Rinnai 26 back in June from The Gas Works at Morphetvale ,the whole process was absolutely painless ,best tradies i have encountered in a long time.I regularly read my gas meter now days as my retailer over charged me big time once.Since i have had the new heater my meter clicks over ONE DIGIT per 3 days against One digit per day before plus very hot water instead of luke warm .

I’m a Plumber/Gas fitter & Rinnai water heaters are fantastic. I’ve been using an infinity 26 at my home since 2011. Never had a single issue. As for people saying they get hot/cold fluctuations, 90% of the time it’s because you have a flow restrictor in your shower head. Remove the flow restrictor and the water heater will operate correctly

We just had this system installed to replace a gas storage system. It's working great so far: very hot water, on demand. The water stays nice and hot; you can set it higher than the recommended temperature at installation (45C I think?), and I thought I'd need to, but it's been hot enough for me -- even in the room furthest away. We don't have high demand (2 people) or run the unit for long (water-saving mentality!). Can't wait to get my next gas bill to see how much we're saving.

This unit is a work horse, no problems , no issues, it was installed properly the first time and for the last 5 years it has just worked and worked; I would say, one really has to make sure the product is right for what you using and then I would advise to get a good tradesman to recommend and install the units. Good tradesman are getting harder to find so good luck with that.

The unit, just after 12 months, started to fail to ignite. Turned the hot water on and off for half an hour or so before it worked. It has stopped again, several times, when not run for a day or two.. Its now stopped again and I can't get it to work. Can smell the gas turning on but its not igniting.
Cold weather and absents seems to upset it.
It really upsets me.

We had problems with this unit since we bought it.Especially on colder days the ignition starts several seconds after we turn the hot water tap on, leaving our backyard full of gas and at times it even comes inside our house. When we bought the unit Rinnai forwarded our details to their area agent Jordans Gas Centres to do the installation. They have been out several times to check the unit but could not find the problem. We called Rinnai today who diverted our call back to Jordan's Gas Centres. Despite that the unit being still under warranty and we had problems with it from the beginning, they want our credit card details for payment before they even send someone out to have a look.

I have an solar hot water system with an Rinnai solar 20 gas booster. I have had issues with it not getting hot enough. I have checked temps in the bathroom and kitchen which are struggling to get to 40deg's. I checked the temp at the closest tape which is in the laundry, it only gets to 45deg's. Is there some way I can increase temperature to 50deg's +??

Very happy with our Rinnai Infinity 16. Previously had a Bosch hydropowered which was very temperamental especially in the colder months. But not the infinity. Very reliable and consistent hot water. We did not purchase the temp controller, but did have a temp valve installed so we could have the unit preset at 60 degrees. Highly recomend this product.

Had a temp controlled (50 degree) Infinity 20 installed a few weeks ago. Using a pool thermometer the delivered to shower temp seems to be around 38-40 degrees (just tolerable in winter - saving on gas and water tho as not hot enough to hang around). Contacted plumber who advises unit cannot be adjusted and to ring Rinnai. I ring Rinnai technical support, who, after a 40 minute wait in the queue, could not have appeared to be any less interested and suggested I ring the plumber. On current experience stay away from this unit/supplier.