3.3.1 List potential house-as-a-system implications when assessing renovation options
- Complete building envelope upgrades first
- Moisture control
- Air leakage - but some air leaks may not be accessible
- Thermal upgrades
- Upgrade cost-effective mechanical systems (sized for final heat loads)
- Ventilate
- If airtightness is significantly improved, balanced ventilation may be necessary
- Some upgrades may not be possible due to existing building construction
- Restrictions on Heritage buildings