I have 12 rads in a 4 bedroom, 1 bathroom house. You can contact us below, our advisors are available 24/7. There is a big difference between electric boilers and. Small properties with little to no storage and loft space. This information has been supplied by help-link uk limited and has been produced for information purposes only and should not be used or relied upon as a substitute for professional advice by a suitably qualified engineer.). We offer solutions for all.