Only if you manage to burn a hole in a substantial heat exchanger. Mine was as good as new when removed after 15 years service (was no longer large enough due to extensions)
Bodge the builder (with the helicopter) loked them (for the cheapness)
A whole estate near here was fitted with those by the builder. Upstairs rooms were fitted with conventional radiators. The big advantage of these over the dry system was that the fans could be modulated to give a constant output, with lower noise levels.