Condensing Boilers
Endura Condensing Hydronic Boiler (219kW to 700kW)

Endura Condensing Hydronic Boiler (219kW to 700kW)

Designed for variable flow primary hydronic applications, the ENDURA™ condensing boiler is built to last using only the best materials and components. Features include simple installation, low emissions burner performance, and a rugged-construction pressure vessel.

ENDURA boilers provide simple accessibility for commissioning and maintenance with latched cabinet panels and hand-wired electrical panels with terminal blocks. Key components are located strategically to facilitate a one-inch side clearance between multiple boilers.

Better by Design

ENDURA boilers are built on a proven heat exchanger platform engineered and manufactured by Fulton. The design features rugged welded construction and a high-mass pressure vessel.

  • Fully Duplex Stainless Steel heat exchanger has 19% greater strength and a 23% reduction in thermal expansion compared to conventional 316L used by the competition.
  • Fully wetted three-pass firetube design operates with lower stresses and therefore greater durability.
  • Corrugated flue pipes increase surface area and turbulence, enhancing fuel-saving efficiencies.
  • The high water volume counter-flow design is exceptionally tolerant of varying and sometimes unpredictable system flow rates; a zero flow condition will not harm the boiler.

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  • Ultra-high efficiencies up to 105.58%
  • Precision dual-servo combustion control
  • High turndown burner
  • Open loop 02 compensation
  • Quiet operation 68.1db
  • Low NOx emissions 17.7mg/m³
  • Durable Duplex Stainless Steel Firetube Heat Exchanger


  • Models: EDR-750 to EDR-2400 (ASME/EN,UL/CE)
  • Output: 750K-2.4M BTU/HR (219kW to 700kW)
  • Standard MWP: 0.09 MPa / 1.1MPa
  • Fuel Options: Natural Gas, Propane
  • Low NOx (<20ppm) Emissions

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Quality and Performance

Tomlinson Energy Service NSW, VIC and SA have a dedicated management system with a focus on Quality, Safety and Environmental aspects of all our operations.

Accredited to ISO 45001:2018, ISO 14001:2015 and ISO 9001:2015.

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