AFTER YEARS OF RE-PRESSURIZING THIS BOILER EVERY MONTH OR SO, IT'S NOW AT THE EVERY DAY STAGE.. HAVE HAD NUMEROUS ENGINEER CALL OUTS REPLACING DIFFERENT PARTS..HAD WATER BOARD OUT AT LEAST 8 TIMES.. NO HELP, MASSIVE WATER MAINS REPLACEMENT IN OUR AREA FOR LAST 2 YEARS.. VERY LOW PRESSURE AT BUSY TIMES OF DAY AND NITE ie. WHOLE STREET HAVING SHOWERS OR WASHING DISHES.. AND CAN'T USE OUR ELECTRIC SHOWER THEN EITHER AS TEMPERATURE FLUCTUATES BETWEEN FREEZING AND BOILING. THE TEMPERATURE ALSO FLUCTUATES FROM HOT WATER TAP OFTEN IT'S LUKEWARM, THEN HOT , THEN COLD. HAVE CRAWLED UNDER FLOORS FOR HOURS CHECKING PIPES AND JOINTS.. CAN FIND NO LEAKS.. STROPPY CALL CENTRE ADVISOR SAYS IT HAS TO BE A LEAK FROM THE BOILER OR THE PIPE WORK.. BUT WE CAN'T FIND ONE.. BOILER WILL ONLY PRESSURIZE UP TO 1 BAR AND DOESN'T GO ANY HIGHER NO MATTER HOW LONG I STAND THERE WITH THE VALVE OPEN AND BY MORNING IT'S ZERO AGAIN. ANY IDEAS .. TOTALLY P*****D OFF. CHEERS