You could save over £200 a year* on your energy bills if you upgrade from an old boiler to a new energy efficient system. Johnston fuels limited, standhill, bathgate, eh48 2hr. Baxi recommend adding water (and therefore pressure) via the filling loop. Az preferred plumbing has a 100% satisfaction guarantee, providing prices before services and no trip charges. Click onto my name (nashua tech) to get my past posts & more info on oil-fired boilers---a new oil-fired boiler will usually.