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 7.5%o2 35ppm co 0 smoke Recommend having a chimney person come out as soon as possible. The chimney is starting to get blocked with soot and there are leaves and brick in the chimney. Greg’s chimney 203 630 1976