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Solar Hot Water
In Victoria, on a North facing unshaded roof, it is possible for the sun to provide up to 89% of a household's hot water needs. In the summer the sun will produce almost all the hot water you will need. However, in winter where there is not quite enough heat in the sun and length in the day, it is necessary to boost the temperature in the cylinder from say 35 degrees up to 60 degrees using Gas, Electricity or Fire.
System Components
Solar hot water heaters have four major components: collector panels, which collect the sun's heat and transfer it into the water; storage tank, which holds the heated water; boosting, which provides additional heat during cloudy days and freeze protection, which prevents damage to the system from water freezing inside the pipes and collectors.
Orientation
Solar hot water systems work most effectively where the panels are pointing within 35 degrees of True North (which is approximately 12 degrees west of what your compass shows). If none of your roof points within 35 degrees of North then you can orientate the collector panels to North using a frame, or you can use higher efficiency panels and face them to the West (please note you may sacrifice part of your government rebate by doing this). Depending on your homes roof you may also require system accessories such as a flat roof frame to ensure your system works more efficiently.
Rebates
Please visit our
solar hot water rebates page (under help on the left of every page) to find out what the current options are for making the switch to solar hot water.
Come and see examples of these systems at Insolar's showroom at 441 Flemington Road in North Melbourne.
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