Excelso A3 stems from a research project aimed at optimizing radiator performances in order to offer a product with high mechanical and energetic capabilities. A high degree of innovation, achieved thanks to the two patents this product was able to obtain, allows the Excelso A3 radiator to be ideal for renovations and low temperature heating systems.


  • Optimal weight-to-heat output ratio
  • Modular: perfect for any space
  • No welds, so no problems with burrs
  • 100% MADE IN ITALY
  • Improved heat exchange = high performance, low consumption

Fondital guarantees EXCLESO A3 for 10 years from the date of installation against all production defects providing the heating system is conforming to the regulations.

Models Depth (C) mm Height (B) mm Centre distance (A) mm Length (D) mm Connection diameters (inches) Water capacity Litres/sect. W/sect. (∆T 30kW) W/sect. (∆T 50kW) Exponent n Coefficient (Km)
500/100 97 557 500 80 G1 0,25 51,6 98,8 1,2718 0,6820
600/100 97 657 600 80 G1 0,27 59,7 114,0 1,2670 0,8024

Maximum working pressure: 1600 kPa (16 bar). Characteristic equation of the model: Φ = Km ·ΔTn (reference EN 442-1). The stated heat output values comply with the European standard EN 442-2.

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