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Which? says the ecotec range is

Which? says the ecotec range is 'exceptionally easy for the householder use and straightforward to service, providing the best combination of high efficiency, low nox emissions, convenient features and ease of use.'. Using caustic soda is also an option, however make sure you have some rubber gloves and eye protection as caustic soda (sodium hydroxide) has been known to cause some serious chemical burns pick.

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