Solar Hot Water Heating

How long will the solar hot water system take to pay for itself?

Water heating costs account for about half of most household's energy bill. Through an efficient solar hot water system, you can reduce energy costs for hot water by 70% per year.

What is the most efficient hot water system?

To work at maximum efficiency, your solar panel should be placed to face north at around 35 degrees. From the evacuated tubes, the heated water is pumped down to the hot water cylinder (HWC). The hot water is moved with a circulating pump which costs around 10c a day to run.

What about heat loss in winter?

Solar water heating has come a long way in the past 15 years. Heat loss for solar panels used to be an issue; particularly during the winter months. However, with the introduction of evacuated glass tube technology, heat loss is minimised. Heat can not pass through a vacuum, so evacuated glass tubes work like exceptionally efficient double glazing.

Can I add a solar hot water system to an existing home?

Yes, of course you can. Admittedly, it is better to install a solar hot water system when building your house, but it can be retrofitted. It is recommended you have a large hot water cylinder. The larger the cylinder, the more freely heated hot water you can store. I always suggest to my clients they have a 300 litre hot water cylinder to store that free heat for later use.

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