We have an LG. the wash maximum
Weight is 9.5kg but the dryer is only like 4kg(?) something like that. So it's fine to do a small load of wash & dry but if u have a full load then uve gotta consider other options. Usually not an issue unless its been banking up for a week+ in winter. We have an old dryer but that uses a lot of electricity so we're trying to eliminate the use of it.

Verdict from separate dryer & washing machine, pretty happy with the combo version.