Have had the unit for around 8 years almost every year sometimes 2 times per year the unit broke down and needed repair
When ringing Rheem, they say we will get back to you but never do. I am a builder, and with the lack of support from Rheem,I will not put a Rheem hot water system in any of my houses any more. I payed around $4500 for this unit, and would not know how much I paid in electricity to have hot water. Bad product, bad service, not happy,

Our Rheem solar hot water system (stainless steel tank) was installed 1 year and 8 months ago (South West Victoria) We're happy with our unit and it provides us with all the hot water we need. Get a Licensed Plumber who has quality solar HWS installation experience and your plumber should provide you with VBA compliance certificate and Certificate of Electrical Safety.,

The unit appears to be designed to run with booster on all the time ie goes cold o/night goes cold after 2 showers
I have previously had solahart dux and heavenly solar all fabulous units this thing was installed by the builder and is sub-standard in my opinion.After a month complaining to the builder Rheem sent out 2 technicians out to assess and couldnt find anything wrong with the unit other than clean the dust off the panels

We had a solar hot water system installed in May 2015. Six months later (12/15) we had an element replaced under warranty as we were not getting any hot water. It's been another 6 months and we are having the same problem. No hot water. Waiting for someone to call us back, we will not be happy if it's the element again and it's not covered by warranty. I think we were given a lemon. Before purchasing Rheem, we had an Everdure which lasted us 18 years with no problems. We have only had Rheem for approx 14 months and 2 call outs to problems with it. We thought Rheem was the best, obviously not!!!!

I have previously had a 300 l Solarhart which performed exceptionally well even when there was no sun.

This new Rheem only produces hot water in the sun but it looses all the heat overnight so you wake up to cold water.

The suggestion from Rheem is leave the electric boost on always....sort of negates the reason for having solar hot water. I thought Rheem was a reputable product name.

Electric boost on the Solarhart was only necessary when overcast for a number of days.

Same issues as Matt V. Replaced tank after 3 years,had to pay $1000 in labour, while contractors left us for a week without hot water. unit is still is not particularly effective. i.e. luke warm water on a summer's day. Warranty only covers one defective unit, so we get nothing from Rheem. Looks like we'll have to cut our losses and try another brand, which we will hopefully have a lot less trouble with. Will never trust Rheem as a provider again.