Worcester Greenstar 18RI The Worcester Greenstar 18RI is an open vented regular boiler designed to replace the old style boilers. As with all new boilers these days the Worcester Greenstar 18RI is a condensing boiler, with a very high-efficiency output, meaning you save on your fuel bills, which is good news, what with the price of fuel today. Greenstar 18RI is a condensing [...]
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