House With No Bills 2020

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Location
Gherang VIC 3240
    • Housing Type:
    • Standalone House
    • Project Type:
    • New Build
    • Open with support of
    • Geelong Sustainability
    • Builder
    • Bolder Constructions
    • Designer
    • F2 Design

About House With No Bills

Now occupied for 11 years the house has delivered on if not exceeded all expectations and is a prime example of passive solar principles delivering year-round indoor environment comfort.

The living areas in north zone and service rooms on south side combined with carefully managed ratio of north facing windows to internal thermal mass.

Positively responded to by all who visit expressing observations of, Comfortable, Joyful and Calm. This response has been so overwhelming in fact that versions of the design have now been built in 6 other locations around Victoria by people who have said, ‘I want one of those’.

This home is all-electric except for solar thermal (60 Apricus tubes) hot water with Famar wood boiler backup for domestic hot water and hydronic slab heating.

Passive cooling achieved with cross-vent employing high level hopper sashes and south side water feature providing evaporative cooling input.

Total energy use in the house for 2016 was 3,500 kWh of electricity plus solar hot water and 1,426kg of air-dried hardwood gathered from property. New planting of more than 1,000 trees allocated by Landcare sequester massive amounts more CO2 than emitted when timber burned.

Cool cupboard reduces energy that would otherwise be needed for refrigeration.

Architectural expression is the result of a desire to integrate solar appliances with building form.

This home was the cover story on Renew 120

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SUSTAINABLE FEATURES

Years Open
2020
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
    • Passive heating cooling:
    • Cross ventilation
      Passive solar designed home
      Thermal chimney
      Thermal mass
    • Active heating cooling:
    • Ceiling fans
      Split system airconditioner
    • Water heating:
    • Solar hot water (evacuated tube)

    • Water heating:
    • Wood fire boiler
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Blackwater system
      Stormwater management
      Low flow shower heads
      Low flow taps
    • Average water consumption per day:
    • not metered. 120,000l storage capacity is more than enough for household, vegetable patch, fruit trees and garden beds. lawn watered with dam water
    • Above ground rainwater storage Type:
    • Steel tanks
    • Above ground rainwater storage Size
    • 120,000L
    • Energy Efficient Lighting
    • Compact fluoro and LED
    • Window Protection:
    • Blinds
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • Radial sawn natural edge yellow stringybark weatherboards Recycled hardwood flooring direct stuck to concrete with penetrating oil sealer
    • Recycled and reused materials:
    • Floorboards
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      Internal walls
      External walls
    • Ceiling Type:
    • Bulk – polyester
    • Ceiling Rating:
    • R3.5
    • Under Roof Insulation Type:
    • Insulbreak reflective sarking with foam core
    • Under Roof Insulation Rating:
    • R0.2
    • Internal Walls Insulation Type:
    • Bulk – polyester
    • Internal Walls Insulation Rating:
    • R2.0 to cool cupboard
    • External Walls Rating:
    • R2.5
    • External Walls Type:
    • Insulbreak sarking and Concertina foil batts
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Renewable energy used:
    • Solar PV grid connect

    • Size of PV system:
    • 3
    • Renewable energy
    • Timber grown on site
    • Average Daily Energy Consumption:
    • 4.5kWh
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • 2009 $285,000
    • Cost estimate of sustainable home/features:
    • Zero cost in specification. Maybe a little cost in getting the design right from first principles
    • Estimate of annual savings:
    • No energy or water bills and power export income pays for Council Rates
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 190m2
    • BAL Rating
    • BAL – 12.5: Ember attack with heat up to 12.5kW/m2
    • Roof
    • Metal (Zincalume)
    • Wall Materials
    • Brick veneer
      Lightweight construction (timber frame)
      Timber
    • Window and Door Types
    • Double glazing

    • Window and Door Types
    • mixture of double and single glazing. hopper sashes for summer thermal chimney ventilation
    • Universal design accessability
    • Wheelchair accessible
    • Universal Design Features
    • 80cm minimum door opening width
      Flush thresholds (no lip) to all external doors
      Hobless showers
      Lever handles for doors (no knobs)
      Minimum 110cm wide hallways
      No stairs/steps
      No Corner cupboards
      Semi recessed basins
      Shower head on rail for various heights
      Slip resistant flooring
      Space around toilets for ease of access in wheelchairs
    • Number of bedrooms
    • 3
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Composting
      Edible garden
      Frog friendly
      Orchard
      Organic
      Wicking beds
      Worm farm
    • Waste Reduction Practices:
    • Compost all food scraps
      Make jams/conserves
      Swap with friends and neighbours
HEALTHY HOME FEATURES
    • Healthy home features
    • Carpet free - tiles/concrete/timber flooring throughout
      Cross flow ventilation
      Indoor plants for air filtration
      Low VOC paints/sealer/varnish
      Natural light and ventilation
      Natural oil sealer/finishes

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