Rinnai Infinity boosting for Solar Hot Water Systems
The Rinnai Infinity Solar models (Rinnai Infinity Solar 24 and 20) can be added to existing or new Solar Water Heating Systems as a water temperature booster.  The size of the Rinnai Infinity depends on the number of bathrooms the house has.

The Rinnai Infinity can be easily plumbed to provide additional heat to solar hot water systems when they are too cold.  Traditionally, back-up electric heaters for solar hot water systems had to heat the entire volume of tank water when the solar gain was too low, or the tank was cold.  This method of backup is inefficient, expensive and defeats the purpose of saving energy with assistance from the sun.