Restored 2013 information
Ventilation and heat recovery
Archive provenance: based on
ventilation.html, captured 30 August 2013. Historic performance, saving and payback figures are not current promises.The historic site contrasted conventional extraction and supply ventilation with total heat-exchange systems designed to recover some heating or cooling otherwise lost through ventilation.
It described options for single rooms, homes, offices and retail settings, sometimes integrated with air-conditioning or heat-pump equipment. Modern system choices and compliance requirements need a current assessment.