Our Unilux boilers are the first and only 5-pass, bent-tube boilers that operate at 85% efficiency, standard. The tangent tube design allows for unsurpassed convective internal pumping and maximum heat transfer. Standard design pressure is 160 PSI / ASME Section IV, with higher pressures available.

• Flexible burner selection
• Useable heated water in under 15 minutes
• Easy access to boiler controls for safety and serviceability
• Easy fireside access for inspection and service
• Available as field-erect (FE) units that don’t require on-site welding (ASME Section I and IV)
• Industrial grade materials throughout
• 25-year standard warranty against thermal shock damage

Our Unilux boilers have the greatest size range of standard product available in this design and can be used wherever heated water is required.