Rendamax Boiler Range: A Comparative Overview of the R0000, R1000, R600 EVO and R3456 EVO

  • 18 December 2025
  • Daycia Dewar

Table of Contents

  1. Introduction to the Rendamax Boiler Range
  2. R0000 Wall-Mounted Condensing Boiler
  3. R1000 Floor-Standing Condensing Boiler
  4. R600 EVO Floor-Standing Condensing Boiler
  5. R3456 EVO Floor-Standing High-Capacity Condensing Boiler
  6. Application Summary
  7. Conclusion

 

Introduction to the Rendamax Boiler Range

Rendamax boilers offer significantly higher efficiency compared to traditional commercial boilers. Their innovative low water content design provides rapid start-up times and long-term operational savings. For example, a conventional high water content boiler may require up to 280 seconds to reach standby temperature (from 10°C to 80°C), whereas Rendamax boilers achieve this in approximately 30 seconds - drastically reducing energy usage and improving response time.

Over a typical 20-year lifecycle, Rendamax boilers can deliver operational cost savings exceeding £40,000 when compared to standard commercial boilers.

Explore the Rendamax boiler range.

 

R0000 Wall-Mounted Condensing Boiler

  • H2 Ready
  • Output Range: 60 - 200 kW
  • Efficiency: Up to 108.7%
  • Design & Features:
  • Dual engine - 2 independent heat exchangers are integrated into the boiler.
  • Non-return valve for easy hydraulic integration.
  • Wide modulation range (1:10).
  • Cascade options: Inline (6 units = 1 MW; 8 Duo = 1.6 MW) or Back-to-Back (4+4 = 1 MW; 4+4 Duo = 1.6 MW).
  • Unique three zone heat exchanger technology – Nox Zone, CO Zone, H20 Zone.
  • Front-facing components for easy servicing.
  • Hydraulic chambers maximise the water turbulence for maximum heat transfer.
  • Expanded polypropylene casing reduces noise and heat loss.

View the Rendamax R0000.

 

R1000 Floor-Standing Condensing Boiler

(Essentially identical to the R0000 in technical capabilities, but designed for a floor standing installation)

  • H2 Ready
  • Output Range: 60 - 200 kW
  • Efficiency: Up to 108.7%
  • Design & Features:
  • Dual engine - 2 independent heat exchangers.
  • Non-return valve, wide modulation (1:10).
  • Cascade options (Inline and Back-to-Back – same as R0000).
  • Communication with pump for enhanced safety.
  • Lightweight materials and compact footprint for easy transport.
  • Stainless steel heat exchangers ensure long service life.
  • Includes transit ramps and integrated cargo wheels (height adjustable and lockable).
  • Integrated backup solution (via low loss header or PHE).

View the Rendamax R1000.

 

R600 EVO Floor-Standing Condensing Boiler

  • H2 Ready
  • Output Range: 150 - 570 kW
  • Efficiency: Up to 109.7%
  • Design & Features:
  • Compatible with higher buildings without need for hydraulic system separation due to 8 bar maximum water pressure.
  • Compact and highly mobile with adjustable cargo wheels.
  • Inspection glass and ignition electrodes accessible from either side.
  • Water-cooled, cold flame burner for improved efficiency and emissions control.
  • Main components can be disassembled for easier installation for restrictive access areas.
  • Fits through standard 760 mm doorways.
  • Low water content for fast start-up.

Discover more - Rendamax R600 EVO.

 

R3456 EVO Floor-Standing High-Capacity Condensing Boiler

  • H2 Ready
  • Output Range: 650 - 2000 kW
  • Design & Capabilities:
  • Modular configuration with 2 - 4 heat exchanger sections.
  • Water-cooled cold flame burner with advanced geometry for ultra-low NOx and CO.
  • Ideal for integration with complex systems: solar, CHP units, heat pumps.
  • Small footprint and lightweight for rooftop or tight-space plant room installations.
  • Can be disassembled for transport.
  • Includes height-adjustable cargo wheels.
  • R3610 model: Industry first with 2 MW output.

Learn more about the R3456.

 

Application Summary:

Model Mounting Type Output Range Best Use Case
R0000 Wall-mounted 60 - 200kW Compact spaces where floor space is limited.
R1000 Floor-standing 60 - 200kW Lightweight and portable, ideal for flexible setups.
R600 EVO Floor-standing 150 - 570kW Mid-sized plant rooms, buildings with high-pressure needs.
R3456 EVO Floor-standing 650 - 2000kW Large commercial applications, rooftop plant rooms.

 

Conclusion

Rendamax boilers deliver exceptional efficiency, reliability, and advanced technology. Available in both wall-mounted and floor-standing models, each unit is engineered with unique features to suit a wide range of applications, from compact commercial spaces to large-scale industrial systems. Alongside reducing operational costs, Rendamax boilers support long-term sustainability goals.

 

Contact Virdis Energy today and find the ideal boiler tailored to your requirements.

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