I agree, all depending on the severity of the situation.
The situation dictates how much is needed. No insulation no dry wall those walls should easily dry over night. However drywall with panel on front is going to dry slower maybe a couple of days. Add wet insulation and then you will need the additional aid of lower grains or the rapid movement energy creates when applied to the moisture.
Heat comes at a price so, is it needed for the situation at hand? Only John knows.