Corgi The national watchdog for gas safety in the United Kingdom. Sedbuk (Seasonal Efficiency of Domestic Boilers in the UK) Energy Efficiency Bands. Energy Efficiency The Energy Saving Trust founded by the UK Government. HHIC Heating and Hot water Industry Council – Part L Building Regulations. Vaillant Vaillant. Setting standards in the heating market. Worcester Bosch A leading manufacturer of sustainable high efficiency heating and hot water solutions for the home. Baxi Baxi Group. Warm Front £300 Heating Rebate Scheme As a Warm Front registered installer we are able to offer £300 off your heating installation if you qualify for the scheme. For further details see link or contact us direct.