BASIX (Building Sustainability Index) BASIX (Building Sustainability Index)

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Central systems

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Central system or facility is a system or facility that services more than one dwelling. BASIX assesses the energy used by the following central systems and common areas in multi-dwelling developments:

  • Central hot water
  • Central cooling
  • Central heating
  • Alternative energy sources
  • Lifts
  • Pools and spas
  • Other measures.
  • BASIX help notes
  • Energy
    • Energy targets
      • Energy target zones
    • Gas
    • Design principles
      • Hot water systems
      • Heating systems
        • Central heating systems
      • Cooling systems
        • Central cooling systems
      • Ventilation and exhaust
      • Lighting
      • Pools and spas
      • Alternative energy sources
      • Other energy uses
      • Central systems
    • Hot water systems
      • Solar
      • Heat pump
      • Gas
      • Wood combustion
      • Electric
    • Heating and cooling
      • Gas heating
      • Gas-fired hydronic system
      • Gas bayonet only
      • Ground source heat pump
        • Sample verification certificate
      • Air-conditioning
      • Electric in-slab heating
      • Wood combustion heating
      • Ceiling fans
      • Evaporative cooling
      • Zoning
    • Ventilation
      • Single dwelling ventilation
      • Multi-dwelling ventilation
    • Lighting
      • Natural lighting
      • Artificial lighting
      • Common area lighting
    • Pools and spas
      • Heating
      • Pumping
    • Alternative energy sources
      • Photovoltaics
        • Rated output
      • Co-generation
        • Sizing
        • Fuel type
    • Other energy uses
      • Cooktops and ovens
      • Refrigerator space
      • Clothes drying
      • Appliances
    • Central systems
      • Central hot water
        • Co-generation
        • Piping insulation
        • Solar collector area
      • Central cooling systems
        • Heat rejection methods
        • Energy sources
      • Central heating systems
        • Energy sources
      • Alternative energy supply
      • Lifts
      • Pools and spas
      • Saunas
      • Other measures
        • Building management systems
        • Active power factor correction
        • Clothes drying (common areas)
        • Clothes washers
  • Thermal comfort
    • Climate and weather
    • Heating and cooling loads
    • Common areas
    • DIY method
      • DIY method FAQs
      • Floors
        • Measuring floor area
        • In-slab heating systems
      • Walls
        • Autoclaved aerated concrete
        • Insulated concrete form
        • External insulated facade system
      • Skylights
        • Glazed roofs
        • Polycarbonate roofs
      • Glazing feedback
      • Windows
        • Orientation sector
        • Shading
          • Projections for new dwellings
          • Projections for alterations and additions
          • Pergolas
          • Awnings
          • External louvres and blinds
        • Overshadowing
        • Frame and glass types
          • Default window data
        • Glazing size
      • Ceilings and roofs
        • Roof insulation
      • Insulation commitments
    • Design principles
      • Orientation and siting
      • Windows
      • Ventilation
      • Insulation
        • Solar absorptance
        • Roof space ventilation
      • Thermal mass
      • Shading
    • Simulation method
      • Simulation method FAQs
      • Accredited Assessors
      • Software tools
      • Assessor certificate
      • Entering results
      • Ceiling fans
      • Certifying thermal comfort
        • Development details
        • Accredited assessor details
        • Assessor certificate details
        • Heating and cooling loads
    • Large boarding house thermal comfort method
    • Passive House Standard method
    • New or altered construction
  • Water
    • Water targets
      • Water target zones
    • Design principles
      • Landscape
      • Fixtures
      • Alternative water
      • Pool and spa
      • Central systems and common areas
    • Landscape
      • Measuring garden area
        • Showing landscaping on plans
      • Low-water use plant species
    • Fixtures
      • WELS scheme
      • Showerheads
      • Waterless toilets
      • Hot water recirculation
      • Hot water diversion
      • Appliances
    • Alternative water sources
      • Rainwater
        • Measuring rainwater tank size
        • Measuring area diverted to rainwater
        • Diverting overflow
        • Installation of rainwater tanks
        • Potential hazards and treatment
        • Using an existing rainwater tank
      • Stormwater
        • Measuring storm water tank size
      • Greywater
      • Private dams
        • Measuring private dam size
      • Reticulated alternative water
        • Recognised schemes
      • Central on-site recycled water
      • Hotwater diversion
      • Alternative water use
      • Sources not recogonised by BASIX
    • Central systems
      • Central cooling
      • Central on-site recycled water
        • Volume
        • Approvals
      • Central water tanks
        • Common landscape area served
      • Fire sprinklers
    • Pools and spas
      • Pool and spa covers
      • Pool and spa shading
      • Rainwater for top-up
  • Project details
    • Project address
    • Project type
      • Single dwelling - house
      • Dual occupancy
      • Attached dwelling
      • Multi-dwelling - house
      • Residential flat building
      • Unit
      • Secondary dwelling (Granny flat or bedsitter)
      • Combination of types
      • Development involving subdivision
    • Site & project details
  • Definitions
    • Terms and conditions
    • Definitions
  • New to BASIX
    • New to BASIX?
    • Which BASIX tool suits my project
    • Dwelling types
      • Single dwelling
      • Multi-dwelling
      • Alterations and additions
        • Swimming pools
        • Using simulation for alterations and additions
          • Application process
          • Modelling process
          • Documentation requirements
    • BASIX assessment
      • BASIX targets
        • Benchmarks
      • BASIX certificates
        • Cost
        • Fee waiver for bushfire-affected homes
        • Changes and validity
        • Revising a BASIX certificate
        • What classes of building need a BASIX certificate?
        • When is more than one BASIX certificate required?
        • Guide to managing large project files
      • Alternative assessments
        • Heritage
        • New technology
        • Large boarding houses
      • Transitional arrangements
        • Guide for certifiers and councils

For additional assistance please visit:   BASIX website (Planning Portal) | Contact BASIX