Equipment and apparatus for heating, drying, ventilation, air conditioning and filtration; HVAC units; ventilation installations and apparatus; ventilation systems; ventilation units; ventilation equipment; equipment and apparatus for controlling indoor air quality; equipment and apparatus for improving indoor air quality; equipment and apparatus for whole house ventilation; fans; electric fans; room fans; ceiling fans; extraction fans; ventilating fans; continuous running electric fans; heat pumps; air movement equipment and apparatus; equipment and apparatus for air distribution and air filtration; centralised ventilation equipment and apparatus; centralised ventilation systems; centralised ventilation units; mechanical extract ventilation equipment and apparatus; mechanical extract ventilation systems; mechanical extract ventilation units; continuous running ventilation equipment and apparatus; continuous running ventilation systems; continuous running ventilation units; parts and fittings for all of the aforesaid goods. .;