What is the difference between Thermal based and Water based chimney?
Water based (Wet) Auto cleaning:
These type of chimneys are having a small storage space (200-300 ml) inside the chimney which would be auto or manually filled up. there would be a sprinkling pipe around the filters. When you press the clean button on chimney, it will sprinkle hot water through on the filters and it will rinse the grease/ oil from the filter. The resulting rinsed oil would be collected in the collector cup/ tray which would be on the wall side below the filter.
While this method is which is mostly found in auto clean chimneys, you still need to clean your filters manually after a certain period. Without this auto clean method you may need to clean filters once in a week or fortnight based upon usage (by putting under running hot water tap).
Popular Wet Auto Clean kitchen Chimneys:-
Thermal based (Heat) auto Cleaning chimneys:
have a heating coil instead of the sprinkling pipe like a heater element (not exactly). which get heated and melts all the oil on the filters. again the oil is collected in the cup/ tray.
the frequency to clean the filter manually is lesser than the water auto clean. It is recommended to clean the filters once a month.
Thermal Based auto clean chimneys are bit costlier than the Wet auto clean. There is another technology recently introduced in indian market which is Filterless Chimney.
Check the comparison Between Baffle Filter, Carbon Filter and Filterless chimneys.
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