Arrived onsite for maintenance of high efficiency boiler. Requested the customer turn on the thermostats up to heat and confirm operation of the boiler and each zone valve. Turned the boiler off and wiped cleaner the burner compartment: performed a visual inspection of all electrical and inspected all external water components such as the exp tank, fill valve, backflow preventer and the circulator pump. System working as it should. As per homeowners request set clock back for daylight savings time.
