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.

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.

Wow having read all these issues one thing really stands out..... customer service is non-existent just an automated response which does nothing to solve the issues or help the customer.
I'm not even going to bother adding my complaint.
I will just never buy a Rinnai product again.

When your power goes off we have to reset the new controller and turn it back on otherwise the heater will not turn on. This is a pain as sometimes you don't know when the power goes off in the middle of the night and then comes back on so when you go and have a shower in the morning there is no hot water. As we have 2 bathrooms we have the controller in a central part of the house so we have to get out the shower and go turn the unit back on total pain... So spoke to service and the only fix is to disconnect the controller on the main unit... What's the point!!! Very disappointed and there is not fix to the problem. Our older unit would turn itself on when the power came back on not this new one you have to manually turn it on.

Hi I have Rinnai infinity 26 (REU-V2626W(50)-AK), This system default temp 50 degree Celsius, I tried to decrease the temperature to 25 / 30 degree Celsius via dip switch. but I couldn't. The manual show only decrease 40 degree, can I decrease or not

Does not cope always waiting ages for hot water.
Ribbed hosing rusted after only 5 years of use and started leaking like a sieve.
Plumber told me they have had many issues with this hose.
Annode had to be replaced after 2 years use.
They would not reimburse me to change the ribbed hosing to copper which is what it should have been in the first place.
We are pensioners and we cannot afford this additional cost.

Model Rinnai B26 A2626WB-50-AK
This unit is COLD, 20 degree day & I just had an only hot water shower & did not get warm at all from my COLD supply of water. I will have to purchase a thermometer & see the actual temp from faucet but you can stand under all hot from this unit without even feeling mild discomfort. Installed sheltered area. Looking forward to developing a hatred of Rinnai over the warranty period...
2 questions posed - Copes well with high demand & extended usage
- Does have issues with fluctuation but may not be due to hot water system

Replaced an old mains gas storage heater with an Rinnai Infinity 26 with controllers to set temp. Great news is my gas consumption fell 90% (not a typo).
Some lessons though.
Had to replace the mains gas line into the property to a larger size, ie less gas consumed but at a much higher rate.
Low flow taps/shower heads appear to confuse the heater (hence some poor reviews i guess), solution is to turn on hot tap much more seems to solve problem.
Have had the unit for almost two years, faultless and highly recommended.
However, given the cost of gas main replacement and gas retailers quarterly connection fee, it would have been more cheaper to go LPG option. QLD fee is almost $100 per quarter plus my $10 gas usage.

Absolutely terrible HWS. Wastes ridiculous amounts of water to heat up, goes cold during showers several times per shower. Have to turn off cold and leave hot water to heat up during shower after already wasting water and time to heat up in first place. Deters the household from even wanting to shower regularly as it is not a relaxing experience whatsoever.

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.

The hot water takes ages to come through, I'm on bottled gas no flow restrictors anywhere. Been like this since it went in. Plumber not helpful at all. It sometimes works after been thumped on the outside of unit.

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

Our unit has been running flawlessly for the past 5 years. I installed controllers next to our showers + kitchen and the kids love having easy control of their shower temp. Energy efficient - Gas bill is nice and low - although installation was high (thick copper gas pipes).

Temperature fluctuation is minor when say the washing machine and/or dishwasher kicks in while you're showering, but it's still warm enough and it very rarely happens. On the flip side, you don't run out of hot water (except during a power outage)!

In all, no regrets and would install again.