Because of the climatic conditions of New Zealand and the positive impact of solar water heating technologies the countryâs authorities encourage the use of this type of installations. This resulted in the issuing of a free guide by the countryâs Energy Efficiency and Conservation Authority (EECA).
When assessing the SWH technologies, the guideline highlights that the impact on costs is largely dependent on two main factors: the systems employed and the building itself (its size, design and age). It subsequently offers a detailed description of the various SWH technologies available and outlines an efficiency parameter based on the systems size and the number of house occupants. Information regarding the installation, use and maintenance of these systems is also presented.
In addition to the technical and economic information, the guide informs about the legal aspects stemming from the use of SWH technologies: the systems (especially the tank) must meet the Minimum Energy Performance requirements from the countryâs Building Codes, there are governmental grants depending on the indicative performance of the system employed, etc.
Author: Energy Efficiency and Conservation Authority
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