Radiators Warming Up When the Hot Tap Is On – Our Experience at Afterglow Plumbing & HeatingAt Afterglow Plumbing & Heating, we’ve been repairing boilers across Birmingham for years, and one of the stranger issues our customers call us about is:“Why do my radiators heat up when I run the hot tap?”It might sound minor, but this is actually a sign of a deeper problem inside your boiler – usually either a faulty diverter valve or a blocked hot water heat exchanger. We see this often in B...