Heating products maker Vaillant has added the Aurotherm VFK 900 to its solar heating range.

The company claims it is the highest performing solar flat plate collector available in the UK. Integrated into hot water systems, its input can be supplemented by boilers and immersion heaters on cloudy days. The VFK 900’s efficiency value for ambient conditions is said to be 81.9% and, based on the company’s recommendation of a collector area of 1m2 per person, supplies 50-60% of a building’s average yearly hot water needs. The 43kg unit can be fitted to roofs in place of tiles and measures 1,160 × 1,930 × 110mm.

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