Rinnai Solar Gas Boosters S20

Beware frost in Melbourne & how to repair/replace! – This came came installed on new two storey townhouse in Melbourne. It’s worked well for 7 years but it froze then exploded last week with subzero temps overnight, leaking water everywhere! I’ve had to divert it to instantaneous gas hot water (no tank) with an emergency roofing plumber. Unfortunately, there is limited property access so I’d need an… Read more

expensive crane to remove/replace because it weighs >100kg. Therefore, broken system will be staying on my roof indefinitely. Most (if not all) of these Rinnai 20 solar systems have broken for my neighbours. If you live in Melbourne, do your research into frost proof systems & how to replace and repair. Needing to pay a roofing plumber to inspect any issues is an added expense.

Just seeking assistance for now – We had Rinnai solar 20 installed in the new home with sun master system. The trouble is if one is having a shower and someone opens another hot water tap or an outlet in side the house, the one in the shower gets cold water. I spoke to Rinnai and was told it should not happen and to get the plumber call them. The Plumber came roamed around the… Read more

house opening and shutting taps and spoke to Rinnai and left. The result is the same. No change. I have used Rinnai hot water units in Japan and they were world class. In my old house we had another brand hot water unit, served us for 10 years and never had this trouble.I thought of a better flow and agreed on Rinnai. but I regret thoroughly getting Rinnai installed now.

So I cannot promote Rinnai Products in Australia to anyone.