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advantage of etc system
easy to get temp. in hard water.
no need to service for long time.
get quick result in rainy & cloudy atmospheres.
higher temp. than fpc system.
no clogging & no choking.
etc system is widely accepted in clod countries.
etc system is cheaper than fpc system.
get average 50° to 60° c hot water at any time at almost zero recurring expense.
once installed. no worry of frequent maintenance
reduction of fossil energy consumption.
substantial savings on conventional heating bills.