Performed pm on oil furnace 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 9.4%o2 1ppm co 0 smoke While performing the maintenance we found a bird inside of the furnace and some remains of a bird nest inside the flue pipe. Recommend having a chimney person come and inspect the chimney. Greg’s chimney 203 630 1976