Great Units We have many of them
We have Cabin park with LPG gas and approx. half of them are rinnai ones. Never had a problem with any yet...
They may not be the cheapest but do you really want reliability or problems with the cheaper ones?
Purchased in December 2000.
I love it
we always have Hot water and have 8 people living in the house. low cost water heater and I can control the temperature so the kids don't get burnt. I couldn't live without it.
Purchased in February 1993.
24 Years trouble free operation
Infinity 20 installed in 1996 replacing an inefficient solar system. Heavy use family home with two bathrooms and it has performed wonderfully during all this time. Had it serviced after about 5 years and was told not to bother again unless there was a problem and there have been none until today. Cost of the unit and installation was approx 30% of a replacement solar system and running costs have been cheaper than the electric boosted old solar unit. Flow rate to two showers at one time is a little reduced but still satisfactory although one shower is perfect achieving water temperatures in excess of my tolerance levels if required !! Cannot rate the unit to highly.
Purchased in May 1996.
Hot and Cold
Our B20 unit is 16 months old and it is satisfactory in all respects except for our shower. In a 3 or 4 minute shower it runs cold 2 or 3 times. The instruction book says to increase the hot water flow but it is already at near its maximum. It is very frustrating as out old tank system never caused a problem in 16 years.
Purchased in September 2019 at Fallon plumbing.
- Infinity 20
- Verified purchase
Do not get any system like this
Point 1: this system will not provide unlimited hot water, unless you use a high flow shower head. Using the ones they claim are compatible (see point 2) will result in hot water cutting in and out, giving you a hot-then-freezing-cold-then-hot-then-freezing-cold-etc shower that makes you want to tear the pipe out of the wall and beat the hell out of the salesperson who told you how great this system is.
I know, salespeople lying to secure a sale... what a shock..
I'd like to know when all salespeople will be legally responsible for b...
Purchased in August 2019 for A$2,205.00.
Another Successful Installation
I supplied and installed a Rinnai B20 Last week.
Rinnai elite Products and HWS's a must for any persons changing Hot Water units.
Get installation done by a Licensed Gasfitter/Plumber.
GF8771 PL6440 Peter
Purchased in October 2019 at Samios for A$765.00.
Not happy with Rinnai B20 unit.
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 w...ater 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.
Excellent with one oddity....
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.
Water is not hot and condensation on the solar panel
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?
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 +??
Luke Warm Water
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.
No hot water at all
We have had the B20 for about 2 years and have nothing but problems with it, having a shower and the hot water cutting out half way through, our plumber could not find a fault so Rinnai came out after insisting we pay a call out fee of $198.00, yes $198.00 CALL OUT FEE, they said it was our shower heads causing the problem but the same thing happens even when trying to fill the kitchen sink just to wash the dishes, piece of crap, ive clicked 1 star because there isn't a no star option
No hot water at all
After reading other reviews there seems to be a consensus that the B20 has an inherent problem with no hot water at all especially when cold weather sets in. I had the plumber who installed it check it, he said it was ok. I had gas company check gas flow and that was ok. Then today there was no water flow at all again. Not happy wouldn't recommend Rinnai.
Written Material about the product
I have searched the internet for 2 hours and I can find no reference as to whether or not the Infinity range 16, 20 B26, 26 requires an electrical power point at or near to the position of intended installation of the product. We need to find this information before we purchase the item.
Worst hot water system I've ever had in my life.
I will never buy or recommend a continuous flow hot water system ever again in my life. It took so long to save for it, and now I have to start saving for a new one. One with a tank that I have always been happy with. I trusted the plumber when he raved on about it, and he called me negative when I said what some of the reviews said. Now I realize those reviews were 100% true. It's a heap of crap!
Lovely endless hot water
We recently ugraded from a 20 year old gas tank to the infinity 20, we also upgraded our copper pipework to have this as it needs to be made larger for instant if you previously had storage. It was the best decision ever. It does take 30 seconds to come through at the other end of the house but we can run multiple taps/showers at once and both have hot water without affecting the water pressure. Its so nice to have endless lovely hot water.
B20 temperature is fine if adjusted.
I had a B20 (the builders version) installed early July 2016 and initially had the same problem as other people with the temperature not being hot enough for my liking. The default temp for these units are either 50 or 60C,
The shower is about 5 meters from the unit and was very warm but not hot. The kitchen sink about 10m away was not hot enough for washing greasy dishes, I could hold by hand under the flow.
Having read about temperature dipswitches on certain units, I got my plumber to have a look. He had not heard of them before even...after being in the industry for 6 years. There are temperature dipswitches on the B20, there is a tech sheet in the front panel showing the settings. He adjusted them to max (there was no specific temperature mentioned in the tech sheet). Initially he got the settings wrong as the water was hot then would be cold after 5 mins of continuous running.
terrible system -waste of water
recently installed rinnai infinity 20 , unhappy as this unit is wasting so much water , and it doesn't give the temperature we need , water is just warm and this is a new unit , rang rinnai but no satisfaction .regret changing the old rheem it was much better .rinnai infinity 20 rating , I would say 2 out of 10 .
No hot water when it rains, the unit is not wet.
We love our Rinnai infinity 20 but it will not work when it rains, the unit is not wet as it sits under the eaves, the rains dries and the unit starts working again?
The unit is under 2 years old and initially worked in all weather.
How can we fix this issue?
No I don't work for Rinnai. In 2014 I replaced my 180ltr gas storage system with the Rinnai B20 unit. After more than 12 months use I can confirm that my gas usage has reduced by at least 70%. So far have had no reliability issues. To get an even temp you must have a controller. Probably takes a wee bit longer to heat up but a small price to pay I believe. Installer did a fantastic job, which probably helps too.
I highly recommend this product.
Questions & Answers
When do you know when it is on
I now have to just use it without temperature control so adjust the water so it’s not boiling until we get a new one
Hi Sean, thanks for the question. The Infinity hot water units will switch on as soon as you open a hot water outlet. The power, gas and water must all be on for this to occur.
If you are having issues, we have a technical help desk available on 1300 555 545 option 3 who may be able to assist.
Hi guys have a vibrating noise on my 20 when turning off the hot water tap comes from the unit . Any ideas
Hi Paul, thanks for the question, there may be a number of causes for the symptoms you are describing and an inspection would be required to isolate the issue.
You can book a service call online here:
how much does a service cost?
Hi Marty, thanks for the question, a service costs $225.00 which includes up to 45 minutes of time and $40 for each 15 minutes after, if necessary.
We have an online booking service which you can find here:
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