Under normal conditions it is recommended that the filters on the Itho ECO HRU 4 models be changed every 12 months.
How often do I have to replace filters on the Itho ECO HRU 4 system?
January 13, 2011 By
Under normal conditions it is recommended that the filters on the Itho ECO HRU 4 models be changed every 12 months.
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