Request an appointment for service today! A combination boiler is not ideal for a household where there are multiple people who might want to use hot water simultaneously a combi boiler is ideal for providing hot water from one source at a time. Hour emergency call-outs with no nasty call-out charges! When making a decision about a new combi boiler, don’t just go for the cheapest option. Call us on or alternatively use the form below and we will call you back! Do not use on polished brass, nickel,.