SOLAR HOT WATER
This renewable system delivers low-cost, low-carbon hot water – but is it worth the investment?
An on-roof solar hot water kit with two flat collectors and a cylinder could cost around the £3,000. This setup is from Grant UK and you can get flush in-roof fittings for a higher price
One panel of Viessmann’s Vitosol 300-TM solar thermal system covers around 4m 2and starts from £2,500. Installation typically costs £2,000 on top
Solar thermal technology converts warmth from the sun to provide domestic hot water (DHW) for showering, bathing, washing up etc. This surprisingly low tech solution transfers heat from the roof-mounted panels into your home’s cylinder. Since it uses the sun, there are zero carbon emissions.