Baxi heat exchanger 255350830102

Primary (main) heat exchanger for wall-mounted gas boilers Baxi EcoFour series (Slim) with power 28-31 kW. The part is a key component of the heating system responsible for heating the coolant. Technical Specifications Part numbers: 255350830102, 944.781.008. Manufacturer: BAXI S.p.A. (Italy). Type: Primary (main) heat exchanger. Material: High-quality copper, providing efficient heat transfer and corrosion resistance. Compatibility: Baxi EcoFour 28-31 (Slim) boilers and similar models. Compatibility (Important!) This heat exchanger is suitable for turbocharged boilers (with a closed combustion chamber) with a power of 28-31 kW. Make sure your model matches the list: Baxi EcoFour 28-31 (Slim) Baxi EcoFour 28-31 Fi (Slim) Baxi EcoFour 28-31 B (Slim) Baxi Slim 2.280 Fi and similar models in this line. Important: This part is NOT suitable for boilers of the Luna, MainFour, Duo-Tec series and for models with a power of 24 kW and below. ⚙️ Signs of Malfunction Heat exchanger replacement is necessary when the following symptoms occur, caused by corrosion or scale: Pressure drop: The pressure in the heating system constantly drops, although there are no visible leaks in the pipes and radiators. Reduced heating efficiency: Radiators have become significantly worse at heating despite normal burner operation and increased gas consumption. Overheating and noise: The boiler is very noisy (hissing, whistling) or periodically overheats. Visible damage: Traces of water leakage or white plaque (hardness salts) on the part's casing 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.