Electric Combi Boilers | Electric Boilers Company - Daxom Electric Combi Boilers by Daxom. The electric boilers company for central heating and domestic hot water which supply Electric Combi Boilers nationwide. Visit the website at https://www.daxom.co.uk Compact electric combi boiler for central heating and hot water in different sizes inbuilt cylinder, capacities and available for both commercial and domestic use.