Electric boilers are extremely popular as they are considered the most efficient method of heating water or steam, quiet and easy to install. Because there is no carbon emissions, electric boilers have very low maintenance costs with easily replaceable electric heating element (flange heaters). TLS – Offers boiler heaters that suit many different sizes and dimensions that customers need. If a boiler ahs a flanged heater that need to be replaced, TLS can replicate the model you currently have from practically any manufacturer and have your boiler system up and running in a matter of hours.