Reviewer Photos & Videos
Need a long term outloook
Our Sunmaster solar system wjth Rinnai 20 booster did not work when we bought the house. It was 12 years old. The pump was no longer working and the cost to replace the pump was not viable on an old tank. The cost to replace the total system of near $5k when we intended to sell the house within 5 yrs did not stack up. We opted for Rinnai B26 Continuous Flow unit and threw the solar out. Assessment unless you have a big family and hold the house for 10 years not worth the outlay for solar. It doesn't work your heater and thats the biggest cost with gas.
Major fail - don’t buy
High pitched squealing noise from frost valves last 90 secs & goes off every few minutes, and runs all night (3 nights so far). You can not sleep with this product. If you happen to doze off it wakes you right back up again. Worst product I have ever had. Rinnai service centre told us Thursday they would call Friday and didn’t. They didn’t care we couldn’t sleep. They are now shut weekends so we can’t follow up until Monday. Hot water is very slow to run - that was just tolerable with water wastage issues. Now with this valve noise issue it is a major fail. Don’t buy!
Purchased in April 2018.
Terrible noise when using hot water
We’ve had the solar unit in for 8 months and the sacrificial anode has been replaced 3 times in the tank to try and combat the build up of pressure in the tank. To date this has not fixed the issue. We were told that we weren’t using enough hot water, so what happens when you go away for the weekend? The copper water pipes have changed colour due to the excessive heat and plastic around the solar return pipe has melted.
It seems that not enough research and development has gone into this product and we a paying the price for it.
Purchased at Tradelink .
Unreliable product with a guarantee to fail multiple times
Having reliable Rinnai products in the past I thought I would fork out the money for the best efficient hot water system Rinnai offered. I purchased the Sunmaster with the evacuated tubes and instant gas booster. Boy was this a mistake..
The Bad - The system had issues from the day it was installed. Day 1- The first issue was the temperature sensor on the evacuated tube manifold was faulty. The sensor was indicating a high temperature all the time causing the circulating pump to run 24 hours a day. Day 35 - circulating pump started making...a whining noise so Rinnai replaced the pump. Day 89 - noticed the gas booster was running all the time. This would normally happen if there has been no sun for a few days however we have had sunny days for the past week. Discovered the pump to not be turning on during the day. The controller board was not turning on the circulating pump when the temperature sensor on the manifold reached a set temperature. Rinnai replaced controller board. 8 Months after install - another faulty temperature sensor on the evacuated tube causing the pump to run 24 hours a day. Approx 1 year 3 months after install - Gas booster running all the time again and no hot water in the tank. Another faulty controller. This time Rinnai replaced it with a completely different controller. 1 year 9 months - over pressure / temperature valve constantly flowing out scaling hot water..... The circulating pump was not turning off the the tank reached 70 degrees. Rinnai found the sensor in the tank to be faulty which they replaced. It's now been 2 years and 6 months and I'm dreading the day when it fails again. I have connected the instant gas booster to a remote switch so I can remotely turn on the booster if there is no hot water in the tank. This is the only way anyone can tell if the solar system is operational or not. Most people will have no idea their solar system is not operating as the gas or electric booster will completely mask these issues. Rinnai has a lot of quality issues with this system. The use of poor quality, not fit for purpose parts has ultimately lead to the multiple failures I have encountered. To date every component of the solar system has been replaced apart from the evacuated tubes. A thermal camera will quickly identify any issues there. The good- To be fair Rinnai has replaced all these items under warranty. My concern is once the warranty runs out will Rinnai come to the party? If you are reading this chances are you either have issues with your system and are looking for a solution or, you are in the market for a new efficient port quality solar hot water system or, you are Rinnai. I hope this review can assist you with repairing your system or, providing information to assist you into making a informed decision or, providing you with valuable product feedback. The issues I have encountered could be an isolated case however, reading other reviews I doubt this is the case. The review provided is factual and based on actual issues encountered and solutions to those issues.
Purchased at ActewAGL for $5,200.00.
We built a house and moved in November 2016 with this unit being installed brand new shortly after. Since then the Rinnai Sunmaster (Model: REU-VR1620WS-AK) has been in gradual decline. We first noticed the water starting to take longer and longer to heat up, then the water temperature started to decrease. Next we had an issue with an overflow valve which resulted in the constant flow of water. This was eventually fixed as it is a known fault but it took a couple of calls for them to acknowledge this and more wasted water which resulted in a ri...diculously high water bill. We then had to call Rinnai out again to get out another repair man to look at the issue with the water not heating up and the decline in temperature. By this stage the water was lukewarm and we had resorted to using a kettle for hot water. Turns out it was a problem with two filters that were dirty and needed to be replaced. The repairman said the unit is like a car and needs to be serviced regularly. So $225.00 later and now being advised that we need to have it serviced regularly with 2 people in the house and less than 4 years old...what a joke. We have had other HWS for years (one was over 10 years old) and never had to have it serviced. Stay clear of this model and Rinnai in general if this is their standard.
Purchased in November 2016.
Rinnai Sunmaster tank installed as part of Hills evacuated tube solar hotwater system. Tank failed due to corrosion at cold water inlet and was replaced under warranty. Replacement tank has failed within warranty period due to corrosion at hot water inlet in the same manner as before. No advice on first warranty that our water quality was an issue. They are fitted i believe with sacrificial anodes. Warranty only covers one purchase not the quality of the product. Suspect poor quality metals being used at connection points.
Not worth wasting your money on, by something that's quality and compare warranty to purchase price.
Purchased in October 2012.
Still not working five years later
Five years on the unit still does not work and Rinnai seem to have their heads in the sand. The problem appears to be in the sensors, and the PCB. Don’t waste your money!!
Purchased in September 2015 for $4,918.00.
Built new house in 2013 and installed rinnai evacuated tube solar hot water system, the system is 6.5 years old and the hot water cylinder has let go, it is leaking and has massive calcium build up inside, my plumber says don't worry warranty will cover, rinnai informs us it's not under warranty as older than 5 years, they basically said bad luck buy a new one, they have longer warrantys now, i got no where with them, they tried to blame our tank water which is not right, we previously lived 2 k's away in same street and had rheem cylinder in...stalled when we built, that lasted 14 years. Never rennai again, no support or help.photos of our 6.5 year old cylinder. People please use rheem or someone else, rennai is rubbish, they contacted 're my review today 2/3/20 and have said they can't help as 6.5 years is outside warranty and blamed our tank water which is a weak excuse, they don't help steer clear from rennai.
Purchased in August 2013.
2 Units failed within 4.5 years each. Rinnai not interested. Do not recommend.
Failed after 4.5yrs. Rusted at outlet. Replaced under warranty at cost of >$400. Second unit rusted at inlet &failed 4.5yrs later. Rinnai contacted on 3 occasions but totally unhelpful - not interested. Not a water supply issue. Awful & expensive experience.
Purchased in March 2010.
Hot Sensor Lead
The Hot Sensor Lead (20m) 31002715 has deteriorated after 5 years from the heat of the collector panels.
The 20m lead that is supplied by Rinnai is not heat rated. This is Speaker cable and not suitable for Hot Temp Probes. Silicone coated wire should be for the first meter then speaker cable (fig 8) will be fine.
There is no information in installation manual regarding the specs that the hot temp probe requires. I would like this so i can purchase a non generic brand.
Purchased in November 2014.
don't even consider buying this waste of money
initial unit,off peak electric boosted floor mounted 315 L tank with 25 evacuated tube solar collector installed before Christmas 2016,
Household of 4 adults,Port Pirie SA ,where the sun signs almost everyday,most days with careful shower timing can get 4 showers but add a visitor to stay or for lunch and usually run out of hot water and need to turn daylight electric boost on
never performed very well and had continuing list of problems,pumps,sensors,etc and eventually tank and some tubes replaced March 2019,
since then have complained about ...
Purchased in November 2016 at McComb Plumbing for $6,900.00.
Worst service ever
My hot water woke up the neighborhood by making a high pitched whine / scream at 4 am. I used the pressure relief valve. The noise stopped. I let go and it returned. So i turned off the whole unit.
I ring rinnai. The first person will not accept my word that i have been in my house a bit over 12 months and the serial number first 4 digits of the serial number mean the unit was now over 2 years old. I needed the certificate of occupancy to show when i got the new house.
I rang back with certificate in hand. After 18 minutes on hold the woman sai...
Purchased in April 2018.
- Sunmaster Range
Nothing but trouble
I purchased this system in September 2017. Since then I have had one tube failure and multiple problems with the pump and control system. The pump is supposed to circulate water from the storage tank through the roof evacuated tube collector when the water in the collector is warmer than the storage tank. Unfortunately the pump often runs all night cooling the hot water in the storage tank.
The controller has been replaced a number of times but the problem keeps recurring. Rinnai have been of no significant help other than in the early days of ...
Rinnai Equinox Hot Water SS330H2EXT
This is merely six years old and the tank is bulging and the external plastic has completely broken away. After 2 and a half weeks I cannot even get someone to look at it. Four calls to Rinnai "service" did not get thru. This company is extremely low on customer focus so we would not recommend anything with a Rinnai brand at all based on what happens when you call for help.
Purchased in August 2013 for $6,000.00.
- Sunmaster Evacuated Tube System
Unreliable not fit for purpose
My unit has now failed for the 9th time in 3 1/2 years. The problem seems to be in the design or manufacture of the pump control system. As a result at night the pumps moves the hot water from the tank and cools it down on the roof. Rinnai are totally unhelpful. The ad hoc solution has been to put a timer in the power supply to the pump so it cannot run at night. To make matters worse the problem is intermittent.
Purchased in September 2015 for $4,918.00.
Questions & Answers
My question to Rinnai is, given the laundry list of similar complaints, has anything been changed in the units over the years to give me any confidence in outlaying $5k that the unit will be fit for purpose?
there have been many changes and upgrades to our solar range over the years. Our technical team can discuss any specific areas that might be of interest to you as well as giving you some advice to ensure the right system is chosen for your needs,
They can be reached on 1300 555 545 option 3.
I have a 250ltr Sunmaster. House & HWS only 2 ½ years old. Have just realised that my household 240v power usage soared by factor of 3 to 4 at end last year. AGL have said meter OK. I am in process of seeking cause & now focused on HWS as little else in household uses power. Established that HWS solar pump is running 24/7 - no idea how many months as very quiet & only heard with ear to pump cabinet. 240v booster continuously "on" from beginning so not cause for change in power use unless change in something like pump not turning off can increase use of 240v heating. Needing guidance. No knowledgeable local plumbers available at present.
Hi John S,
We have a technical help desk who may be able to provide assistance but will need more information to help. They can be reached on 1300 555 545 option 3.
Already been there. They suggested plumber [& not much else] but no good ones available at present. What is actual consequence if pump running 24/7. Does it make 240v element work more by constantly feeding water past whatever sensor activates? Does it reduce solar heating performance - eg water not as hot [when turned 240v off for 3 days. As part of current seeking answers, the water dropped to "warm" despite sunny [winter] days. Rgds John
Hi John S,
Potentially having the pump running constantly could affect the water temperature in the tank, cooling down water that has already been heated however without further information it is difficult to be specific with the issue.
if you are unable to find a local plumber with the experience to check the system, you can book a Rinnai technician through our online booking and they can check over the system to see if there are issues that need to be resolved.
The link to book online can be found here:
Just wanted to know if you can turn off solar hot water panels and just run gas because I think the antifreeze valve is broken cause it sparays water thanks
Hi Michael E,
Thanks for the question.
We would suggest contacting our Technical team on 1300 555 545 to discuss this further. They can also assist with booking a technician to come out to your house and assess this.
Get an answer from our members and Rinnai representatives
|Category||Solar Water Heaters||Solar Water Heaters||Solar Water Heaters|
|Release date||Apr 2010||Apr 2010||Apr 2010|
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