Top Five Most Likely Boiler Predicaments
http://eduardoffbi923.jigsy.com/entries/general/do-not-let-customers-forget-about-spring-heating-cooling-cleansing
1. No Heat or Hot H2O Potential causes include broken diaphragms and airlocks, failure of motorised valves, concerns with the thermostat or low water levels. A good place to start is to inspect if your boiler