Performed annual furnace tune-up on 9-year-old unit that had previous ignitor issues. Cleaned heavily contaminated air filter and flame sensor, which were causing operational problems. Conducted combustion analysis with Testo 310 II analyzer to verify proper functioning. Unit now operating within normal parameters.
Performed diagnostic inspection of a one-year-old boiler system. Confirmed customer had inadvertently overpressurized the system by opening fill valves, causing relief valve activation. Checked relief valve which showed minimal residual dripping, attempted to reseat plunger. Verified proper function of all other system components and provided comprehensive education to homeowner on correct system operation and pressure maintenance procedures.
DuPont filter estimate, and boiler repipe estimate.