Energy efficient: typically, a back boiler provides only 78% energy efficiency which is below the government’s minimum requirement of 86%. Many modern boilers can achieve efficiency of 90% and more. Cheaper to run: the energy wasted by a back boiler is costing you money.

Are back boilers expensive to run?

Back boilers are quite an archaic form of heating. They can be costly to run and maintain, they also tend to be a lot more inefficient than modern boiler models.

Are back boilers still legal?

Old Back boilers are Illegal. Old back boilers with gas fires as central heating systems are now illegal. If you really loved your gas fire and back boiler, it is legal to have a new one fitted as long as the old back boiler is removed and replaced.