Imax Xtra EL is available in 320, 395, 470, 545 and 620kW outputs as a single unit or 715, 790, 940, 1090 and 1240kW outputs as a dual unit. All Imax Xtra EL models offer very low NOx Class 6 performance for maximum points on the BREEAM scale and extremely high efficiencies up to 109.8% part load at 30% output. 320 and 395kW models are fully compliant with the Energy-related Product (ErP) Directive’s high efficiency requirements, whilst models over 400kW are compliant with Building Regulations Part L2. 1090 and 1240kW models are also MCPD compliant.

Straightforward integration with 0-10v BMS systems is easy; together with volt-free contacts and alarm signals, there is a range of additional kits available for added control, including a modulating sequencer, plant room sensor, outside sensor and optional gateway adaptors to MODBUS, LONWORKS or BACNET.

Header kits for dual boilers are compliant under the SEP (Sound Engineering Practice) category of the Pressure Equipment Directive 97/23/EC (PED).

  • 5 year Heat Exchanger warranty*
  • Robust cast aluminium silicon alloy heat exchanger
  • Meets ErP and Building Regulations (Part L2) (depending on output)
  • High 5:1 turndown
  • Qualified for Energy Technology List, allowing full tax relief
  • Conventional or room sealed flue options
  • High, full and part load efficiencies
  • Easy to install and service
  • Simple controls interface with large backlit display
  • Compact - one width & height for easy siting
  • Designed for easy installation, commissioning and servicing
  • Internal electronic control unit with LCD display
  • Natural gas
  • Modulation via 0-10 volt, BMS or RWF
  • Comprehensive controls

*5 year heat exchanger warranty subject to terms and conditions, available below in the Downloads section. 2 year parts and labour warranty as standard.

  • Badge Com British Manufacturing BRITISH MANUFACTURING
  • Badge Com Floor Standing FLOOR STANDING
  • Badge Com Erp ErP COMPLIANT
  • Badge Com Nox NOx CLASS 6
  • Badge Com Bim BIM
  • Ped Compliant Blue PED Compliant

Optional Kits

  • DHW sensor
  • Outside sensor kit
  • Programmable room thermostat
  • Pump kit
  • Sequence control kit
  • Sequencer DHW sensor kit
  • Room sealed air inlet kit (for 320 - 620kW models only)
  • Room sealed air inlet header kit (for 715 - 1240kW models only)
  • Flow & return header kit (for 715 - 1240kW models only)
  • Gas header kit (for 715 - 1240kW models only)
  • Tank sensor kit
  • Air filter kit
  • Sealed system kit


The Imax Xtra EL is a compact unit with one width and height for easy siting - unsure how this will look? Check out our 3D interactive model. 

Click the Play button on the image on the right and you'll be able to see Imax Xtra EL in fantastic 3D.

Choose the 3D model you would like to view by clicking on one of the two small images: Imax Xtra EL Single or Imax Xtra EL Dual. Then click and hold on the boiler to spin and move the image around. You can also zoom in and out using the wheel on your mouse if you have one. You can increase the size of the image by clicking on the full-screen button in the bottom right corner.