Getting an energy-efficient boiler is a great start to saving on heating, but what's the purpose of heating your home if the heat is escaping? Page last modified on january :am. Got a tip, kitchen tour, or other story our readers should see? Separate, fixed ° setpoint input for ‘indirect’ domestic water heater. Always happy with the service we get from rowells you guys make everything so easy, and all of your employees are well informed, communicate well, and are professional &.