Central heating radiators offer the highest heat outputs and the best levels of heating efficiency out of any plumbed radiator design.
Typically, horizontal radiators deliver a higher heat output than vertical central heating radiators, as they span further to draw up cold air for convection at a more efficient rate.
That said, many vertical radiator models can provide an adequate heat output for the specific space they are installed in. Take a look at our dedicated blog, Top 5 Vertical Central Heating Radiators, for a deeper insight.