Here at Getafreeboiler, we hear it all the time from Londoners - a stunned realisation when they finally add up what their old boiler is actually costing them. The reality is, an older system not only consumes more energy but takes its toll on your pocket in concealed ways that rack up fast. From astronomical bills to panic repair call-outs, that "reliable" boiler in the corner might be draining your finances more than you think.