Ultimate₃ Regular Boiler
The Ultimate3 regular (open vent) boiler is suitable for homes with high hot water demands. The Ultimate3 regular heat only boiler is available in a 25kW output and has been designed to be light and compact with cupboard fit dimensions. The boiler features flexible flue options and an aluminium heat exchanger for proven reliability and performance.
*5 year guarantee available as standard. 10 year extended guarantee is only available for boilers registered through Club Energy with a Glow-worm Power Filter.
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Downloads
Brochures
Declaration of Conformity
Installation Instructions
Leaflet
Operation instructions
Statement of Compliance
Alternative products
Ultimate₃ Combi Boiler
- Leading combi boiler offering great performance
- Up to 10 years guarantee available*
- £15 reward when registered through Club Energy
- Available in 30kW and 35kW models
Ultimate₃ System Boiler
- ErP A rated for efficiency - helping to reduce energy bills
- Up to 10 years guarantee available*
- £15 reward when registered through Club Energy
- Available as 25kW model