(With carpeting, it is recommended to keep the thickness of carpet and pad to a reasonable thickness, as it resists the heat's upward transfer).
(it; is recommended; to keep the thickness of carpet and pad to a reasonable thickness; as it resists the heat's upward transfer) (it; to keep; the thickness of carpet and pad; to a reasonable thickness) (it; resists; the heat's upward transfer)
it it it
is recommended to keep resists
to keep the thickness of carpet and pad to a reasonable thickness as it resists the heat's upward transfer
the thickness of carpet and pad to a reasonable thickness
the heat's upward transfer