Paragraph 33
Whether the accommodation to which the return relates has central heating and, if so, whether—
(a)
mains gas,
(b)
other gas (including liquid petroleum gas and biogas),
(c)
electric (including storage heating),
(d)
oil,
(e)
solid fuel (other than wood),
(f)
wood or biomass (including logs, pellets and chippings),
(g)
another renewable energy source (including electric and air heat pump systems),
(h)
district or communal heat system, or
(i)
another type of central heating.