Performed pm on oil boiler Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests While performing the maintenance we found a large birds nest inside the chimney. Brought the customer down to show them the nest. Removed as much of the nest as possible. Recommend having a chimney company come out and check the chimney. Greg’s chimney 203 630 1976