Heat Exchanger Baxi 255350780101

Primary (main) heat exchanger for Baxi EcoFour (Slim) series wall-mounted gas boilers. This is a copper heat exchanger installed in boilers with a closed combustion chamber. Technical specifications Part numbers: 255350780101, 944.781.007. Manufacturer: BAXI S.p.A. (Italy). Type: Primary (main) heat exchanger. Material: High-quality copper, ensuring efficient heat transfer and corrosion resistance. Compatibility: Baxi EcoFour 24 (Slim and similar models with 24 kW capacity). Compatibility (Important!) This heat exchanger is suitable for turbocharged boilers (with closed combustion chamber) with 24 kW capacity. Make sure your model is on the list: Baxi EcoFour 24 (Slim) Baxi EcoFour 24 (Ch, Gas, 2 circuits) Baxi EcoFour 24 F (Slim) Baxi EcoFour 24 Fi (Slim) Baxi EcoFour 24 B (Slim) Important: This part is NOT suitable for Luna, MainFour, Duo-Tec series boilers and for models with 28 kW capacity and above. ⚙️ Signs of malfunction Replacement of the heat exchanger is necessary for the following symptoms caused by corrosion or scale: Pressure drop: The pressure in the heating system constantly drops, although there are no visible leaks in pipes and radiators. Reduced heating efficiency: Radiators heat significantly worse with normal burner operation and increased gas consumption. Overheating and noises: The boiler is very noisy (hissing, whistling) or periodically overheats. Visual damage: Traces of water leakage or white deposits (hardness salts) on the part body inside the boiler. Replacement recommendations Installation: Replacing the heat exchanger is a complex procedure requiring draining the coolant, complete disassembly of the hydraulic group, and experience with gas equipment. I strongly recommend entrusting this to a qualified specialist, as mistakes can lead to leaks and failure.