The most common types of central heating were mains gas (71.6%, 965,000), two or more types of central heating (not including renewable energy) (9.2%, 124,000) and oil only (7.8%, 105,000).
Y mathau mwyaf cyffredin o wres canolog oedd y prif gyflenwad nwy (71.6%, 965,000), dau fath o wres canolog neu fwy (heb gynnwys ynni adnewyddadwy) (9.2%, 124,000) ac olew yn unig (7.8%, 105,000).