Performed comprehensive furnace tune-up on 3-year-old FRP system, including inspection of all routine components, blower verification (clean and balanced), condensate line clearance, and heat exchanger examination with no compromises found. During testing, adjusted gas pressures (found low fire slightly elevated at 6.6 inwc, adjusted to 6inwc) and confirmed proper system operation with satisfactory 75-degree temperature rise after 15-minute operational test.
