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 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.
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.
After a second check, he set them correctly, and the unit continuously pumps out hot water so very happy with it.
Guess I'll find out later whether running the unit at a hotter temperature decreases its lifespan.
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.
No hot water
I have had this Infinnity 20 for about five years, no problems. Now when waiting for water @ 50 deg the readout drops to 12 and no hot water comes through. Please help . The first unit lasted about 12 years without a problem. Could the fault be with the unit or the touch pad . John g
Rinnai infinity 20
Rinnai infinity 20 had put in a few weeks ago great product will never go back to another brand .Just one thing if the electitiy goes off do you have to close the gas line or do you just leave it .It does take a few minutes before the water gets hot but it should work that way
Can't understand what everyone is complaining about!
Although I've only had the Rinnai Infinity (20) for a few months, it works as advertised. The time to get hot water to the taps is similar to the previous storage hot water system the Rinnai has replaced (from about 5 seconds in the bathroom to perhaps 10 or 12 seconds in the kitchen). I've had no problems whatsoever at relatively low flow rates (WELS approved shower heads etc are no problem), and water temperature is constant. I do use the water controllers, which make shower and bath time so easy (no need to juggle hot and cold taps). The max I use in the shower is 42 degrees (according to the water controller), so even for someone who likes the shower REALLY hot it wouldn't be a problem. I note that although the unit is limited to 50 degrees, there are dip switches inside the unit that allow the temperature to be increased slightly, to compensate for losses in the pipework (i.e. it's designed so that you can achieve 50 degrees at the tap, not just 50 degrees at the water heater).
Hot water is truly continuous. The water controllers are perfect for bath/shower use.
Some documentation suggests that the Kitchen controller may be increased to 55 degrees, however it seems the model I have is limited to 50 degrees max, no matter what.
Questions & Answers
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