Review of natural ventilation strategy to ensure sufficient ventilation is provided. This strategy uses either air pressure or temperature difference to draw in fresh air (at wall or window vents) and extract stale air to the outside through a passively operated (e.g. wind driven) heat exchanger to recover the heat from the outgoing air flow. Windows can be opened for rapid purge ventilation

Monitoring & feedback recommended: Yes

ADVANTAGES

Simplicity; no energy in-use; silent operation; heat recovery

CONCERNS & ACTIONS

TECHNICAL (7)

Retention of air flow - door undercuts
Sufficient ventilation?
Space limitations
Complex installation
Building Control/Warrant
Personal preference
Personal capacity/Right opportunity

HERITAGE (2)

Listed building consent
Planning consent within conservation area

ENERGY (2)

Increased infiltration
User understanding

RELATED MEASURES

SERVICES (6)

Heating system Refurbishment
High efficiency gas-fired condensing boilers
Oil-fired condensing boilers
Biomass boilers
Biomass stove with back boiler
High efficiency replacement warm-air units

BEHAVIOUR (4)

User interfaces for usability
Provision of simple and clear information
Improving User interest and involvement
Maintenance

Guidance Wheel

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