Air leakage testing and draught proofing cost estimates Air Barrier Technologies Building shell data collection & FirstRate5 modelling, building shell upgrade cost estimates Mitsouri Architects, Greencheck, Nycole Wood & Tony Isaacs Energy Makeovers, RMIT Centre for Design, MEFL Appliance data collection Peter Kennedy, Kevin Fregon & Ross Mulder Energy Makeovers Analysis & reporting for individual projects MEFL, Energy Consult RMIT Centre for Design, MEFL Overall analysis of 60 houses and final report Sustainability Victoria
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate A1 - Single storey - Detached - Brick Veneer - Suspended timber floor 1970s 4 Owner occupied 175.3 1.6 Gas central Ducted evaporative 68% - R0.5 ceiling insulation - 1.16 ACH A2 - Single storey - Semi-Detached - Weatherboard - Suspended timber floor 1910s 5 Owner occupied 88.7 1.6 Gas room N/A 60% - R2.0 ceiling insulation, except flat roof - 1.09 ACH A3 - Single storey - Detached - Brick Veneer - Suspended timber floor 1950s 5 Private rental 139 0.5 Gas central N/A 98% - No ceiling insulation - 1.71 ACH A4 - Single storey - Detached - Brick Veneer - Suspended timber floor 1970s 2 Owner occupied 97.3 1.7 Gas room Ducted evaporative 52% - R1.5 ceiling insulation - 2.00 ACH A5 - Single storey - Detached - Weatherboard - Suspended timber floor 1950s 3 Private rental 83.8 0.9 Gas room N/A 23% - R3.0 ceiling insulation, except flat roof - 2.67 ACH A6 - Single storey - Semi-Detached - Brick Veneer - Suspended timber floor 1960s 4 Private rental 75.1 0.8 Room RAC Room RAC 32% - No ceiling insulation - 1.82 ACH A7 - Single storey - Semi-Detached - Brick Cavity - Suspended timber floor / concrete slab on ground 1930s 2 Owner occupied 114.3 2.7 Gas room N/A 19% - R2.5 ceiling insulation, except flat roof - 1.43 ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate A15 - Single storey - Detached - Brick cavity / brick veneer - Suspended timber floor / concrete slab on ground 1930s 1 Owner occupied 134.4 1.4 Gas room Room RAC 42% - No ceiling insulation in pitched roof - R2.5 ceiling insulation in flat roof - 0.98 ACH B1 - Single storey - Detached - Brick veneer - Suspended timber floor 1980s 2 Owner occupied 128 0.8 Gas central Ducted evaporative 92% - R3.0 ceiling insulation - No floor or wall insulation - 4.29 ACH B2 - Single storey - Detached - Brick veneer - Suspended timber floor 1960s with 2000s extension 2 Owner occupied 106 2.4 Gas central N/A 91% - R2.0 ceiling insulation - R1.5 wall insulation in extension; No floor insulation - 2.03 ACH B3 - Single storey - Detached - Brick veneer - Suspended timber floor 1960s with 2000s extension 4 Owner occupied 150 1.5 Gas central Room RAC 99% - R1.5 ceiling insulation in main house, R4.0 in extension - No wall insulation in main house, R2.0 in extension - No floor insulation - 2.71 ACH B4 - Single storey - Detached - Brick veneer - Suspended timber floor in main house / concrete slab on ground in extension 1970s with 1990s extension 4 Owner occupied 120 1.4 Gas central Cooling only room AC 62% - R1.0 ceiling insulation - RFL wall insulation in extension only - No floor insulation - 3.91 ACH B5 - Single storey - Detached - Brick veneer - Concrete slab on 1990s 4 Owner occupied 202 3.1 Gas central Room RAC 78% - R.2 ceiling insulation - RFL wall insulation - No floor insulation - 0.94 ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate B6 - Three storey - Detached - Brick veneer with some weatherboard and brick cavity - Suspended timer floor in main house, concrete slab on ground in basement 1980s 5 Owner occupied 238 1.1 Gas central Room RAC 60% - R2.5 ceiling insulation - No wall insulation - No floor insulation - 2.67 ACH B7 - Two storey - Semi-Detached - Brick veneer - Concrete slab on ground 2000s 3 Owner occupied 107 3.8 Gas room N/A 45% - R0.6 ceiling insulation - RFL wall insulation - No floor insulation - 1.12 ACH B8 - Two storey - Detached - Brick veneer with some weatherboard - Suspended timber floor 1990s 3 Owner occupied 173 2.5 Gas central Ducted evaporative 88% - R2.5 ceiling insulation - R1.5 wall insulation - No floor insulation - 1.91 ACH B9 - Single storey - Detached - Brick veneer - Suspended timber floor 1980s 1 Owner occupied 183 1.8 Gas central Ducted evaporative 59% - R1.5 ceiling insulation - No wall insulation - No floor insulation - 1.59 ACH B10 - Single storey - Detached - Brick veneer - Suspended timber floor 1950s 1 Owner occupied 74 1.8 Gas room Ducted evaporative 39% - R3.5 ceiling insulation - No wall insulation - No floor insulation - 4.41 ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate B11 - Single storey - Detached - Weatherboard - Suspended timber floor 1950s with 2000s extension 3 Owner occupied 160 1.6 Gas central Room RAC 51% - R1.5 to R2.5 ceiling insulation - R1.5 wall insulation in extension - No floor insulation - 2.15 ACH B12 - Single storey - Detached - Brick veneer - Concrete slab on ground 2000s 2 Owner occupied 155 3.1 Gas central Ducted evaporative 58% - R2.0 ceiling insulation - No wall insulation - No floor insulation - 1.1 ACH B13 - Single storey - Detached - Brick cavity - Suspended timber floor 1920s 4 Owner occupied 169 1.9 Gas central (hydronic) Room RAC 96% - R4.0 ceiling insulation - No wall insulation - No floor insulation - 2.49 ACH B14 - Single storey - Detached - Brick veneer - Suspended timber floor 1950s 2 Owner occupied 84 1.4 Room RAC Room RAC 31% - R2.5 ceiling insulation - No wall insulation - No floor insulation - 3.48 ACH B15 - Single storey - Detached - Brick veneer - Suspended timber floor 1980s 2 Owner occupied 105 2.3 Gas central Room RAC 64% - R2.0 ceiling insulation - No wall insulation - No floor insulation - 1.77 ACH B16 - Two storey - Semi-Detached - Brick cavity - Concrete slab on ground 1980s 2 Owner occupied 79 1.8 Electric panel heater Cooling only room AC 45% - No ceiling insulation - No wall insulation - No floor insulation - 1.63 ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate B17 - Single storey - Detached - Brick veneer with some weatherboard and brick cavity - Concrete slab on ground 1960s with 1980s extension 4 Owner occupied 151 0 Gas room Cooling only room AC 90% - No ceiling insulation - No wall insulation - No floor insulation - 2.29 ACH B18 - Single storey - Detached - Brick veneer - Suspended timber floor 1960s 2 Owner occupied 102 1.5 Gas central Ducted evaporative 98% - R3.5 ceiling insulation - No wall insulation - No floor insulation - 2.50 ACH B19 - Single storey - Detached - Brick veneer - Concrete slab on ground 1980s 2 Owner occupied 104 2.6 Gas room N/A 51% - R3.5 ceiling insulation - No wall insulation - No floor insulation - 1.54 ACH B20 - Single storey - Detached - Weatherboard - Suspended timber floor / concrete slab on ground in some areas 1950s 1 Owner occupied 70 1.9 Gas central N/A 92% - R2.5 ceiling insulation - No wall insulation - No floor insulation - 2.17 ACH B21 - Single storey - Detached - Brick veneer - Concrete slab on ground 1990s 4 Owner occupied 264 3.2 Gas central N/A 57% - R1.5 ceiling insulation - RFL wall insulation - No floor insulation - 0.62 ACH B22 - Single storey - Detached - Weatherboard - Suspended timber floor 1930s 2 Owner occupied 89 1 Gas room N/A 92% - No ceiling insulation - No wall insulation - No floor insulation - 0.95 ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate B23 - Single storey - Detached - Brick veneer - Suspended timber floor 1950s 4 Owner occupied 194 1.7 Gas central N/A 35% - R2.0 ceiling insulation - No wall insulation - No floor insulation - 1.64 ACH B24 - Single storey - Detached - Weatherboard - Suspended timber floor / concrete slab on ground in rear extension 1980s 1 Owner occupied 93 1.2 Gas room N/A 43% - R2.0 ceiling insulation in attic section - No wall insulation - No floor insulation - 2.37 ACH B25 - Single storey - Detached - Weatherboard - Suspended timber floor 1990s 4 Owner occupied 94 2.4 Gas room N/A 49% - R2.0 ceiling insulation - R2.0 wall insulation - No floor insulation - 1.87 ACH B26 - Single storey - Detached - Weatherboard - Suspended timber floor 1960s 2 Owner occupied 70 1.7 Gas room N/A 26% - R1.5 ceiling insulation - No wall insulation - No floor insulation - 3.71 ACH B27 - Single storey - Detached - Brick veneer - Concrete slab on ground 1990s 2 Owner occupied 215 4 Gas room Room RAC 29% - R2.0 ceiling insulation - R1.5 wall insulation - No floor insulation - 0.64 ACH B28 - Single storey - Detached - Brick veneer - Concrete slab on ground 1980s 3 Private rental 82 2.5 Gas room N/A 78% - R2.0 ceiling insulation - No wall insulation - No floor insulation - 1.96 ACH B29 - Single storey - Detached - Brick veneer - Suspended timber floor 1980s 5 Owner occupied 97 1.2 Gas room Cooling only room AC 52% - R2.0 ceiling insulation - No wall insulation - No floor insulation - 3.89 ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate B30 - Single storey - Detached - Brick cavity with some brick veneer and fibre cement sheeting - Concrete slab on ground / suspended timber floor 1900s with 1930s & 1990s extensions 3 - 195 0 Gas room Room RAC 24% - R2.5 ceiling insulation in extension - No wall insulation - No floor insulation - 2.02 ACH C1 - Single storey - Detached - Weatherboard - Suspended timber floor 1910s with 1990s extension 2 Owner occupied 213 1.1 Gas central N/A 71% - R1.5 ceiling insulation in main house, R2.5 in extension - No wall insulation in main house, R1.5 in extension - No floor insulation - 1.89ACH C2 - Single storey - Detached - Brick veneer - Suspended timber floor 1960s 2 Owner occupied 105 1.8 Gas central N/A 99% - R1.5 ceiling insulation - No wall insulation - No floor insulation - 1.88ACH C3 - Double storey - Detached - Brick veneer - Suspended timber floor 1970s with 1980s extension 3 Owner occupied 275 2.1 Gas central Cooling only room air conditioner 73% - Ceiling insulation: mix of RFL and R1.5 & RFL and R2.0 throughout house - RFL wall insulation in main house, RFL and R1.5 in extension - No floor insulation - 1.66ACH C4 - Single storey - Detached - Brick veneer - Concrete slab on ground 1990s 4 Owner occupied 86 3.1 Gas central Ducted evaporative 98% - R1.5 ceiling insulation - RFL wall insulation - No floor insulation - 1.39ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate C5 - Double storey - Semi-Detached - Brick veer with some cement sheeting - Concrete slab on ground 2000 - 2005 2 Owner occupied 172 3.1 Gas room N/A 36% - R4.0 ceiling insulation - RFL in brick veneer walls and R1.4 in framed walls - No floor insulation - 1.15ACH C6 - Single storey - Detached - Weatherboard - Suspended timber floor 1950s with 2010 extension 4 Owner occupied 105 0.7 Gas central Room RAC 75% - Ceiling insulation: R1.0 in main house & R3.0 in extension - Wall insulation: None in main house & R2.5 in extension - No floor insulation - 2.07ACH C7 - Single storey - Detached - Weatherboard - Suspended timber floor 1950s 4 Owner occupied 79 1.7 Gas room N/A 89% - R5 ceiling insulation - No wall insulation - No floor insulation - 2.05ACH C8 - Single storey - Semi-Detached - Brick veneer - Concrete slab on ground 1980s 1 Owner occupied 99 1.1 Gas room Cooling only room air conditioner 49% - No ceiling insulation - No wall insulation - No floor insulation - 2.64ACH C9 - Single storey - Detached - Brick cavity - Suspended timber floor 1940s with 1980s extension 2 Owner occupied 105 1.4 Gas room Room RAC 64% - Ceiling insulation: R1.5 in main house, none in extension - No wall insulation - No floor insulation - 2.12ACH C10 - Single storey - Semi-Detached - Brick Veneer - Suspended timber floor 1960s 1 Owner occupied 60.6 2.4 Room RAC Room RAC 58% - R1.5 ceiling insulation - No wall insulation - No floor insulation - 1.94ACH
House Number Construction Characteristics Construction Era No. of People Ownership Status Floor Area (m2) Existing HER Main Heating Main Cooling % of Floor Area Heated Existing Insulation and Air Leakage Rate C11 - Single storey - Detached - Brick cavity with some concrete block and framed walls in extension - Suspended timber floor 1940s with 2008 extension 3 Owner occupied 215 2.4 Gas central N/A 97% - Ceiling insulation: R1.5 in main house, R2.5 in extension - Wall insulation: None in main house and R2.0 in extension - No floor insulation - 1.10ACH C12 - Single storey - Detached - Weatherboard - Suspended timber floor 1950s with 1980s extension 1 Owner occupied 127 1.7 Electric panel heater N/A 22% - Ceiling: R3.5 in main house, none in extension - No wall insulation - No floor insulation - 1.04ACH C13 - Single storey - Detached - Brick veneer - Suspended timber floor 1980s 2 Owner occupied 113 2.4 Gas central Cooling only room air conditioner 83% - R2.5 ceiling insulation - No wall insulation - No floor insulation - 1.20ACH C14 - Single storey - Detached - Brick veneer - Suspended timber floor 1960s with 2009 extension 4 Owner occupied 124 2.7 Room RAC Room RAC 57% - R3.5 ceiling insulation - Wall insulation: None in main house, R1.5 in extension - Floor insulation: None in main house, R1.5 in extension - 1.41ACH C15 - Single storey - Detached - Brick veneer - Suspended timber floor 1950s with 1980s extension 3 Owner occupied 121.7 2.2 Gas central N/A 99% - R4.0 in main house, none in the extension - No wall insulation - No floor insulation - 1.19ACH Average 2.9 133.2 1.81 63.3%
A5 Applied No Yes No Yes No Yes Yes No Yes Yes No Details Reduced from 2.67 to 0.5 ACH 12.3 m perimeter of subfloor enclosed 99.3 m2 of R2.5 installed 24.7 m2 of R2.5 installed 2.4 m2 of Double Glazing installed 2.4 m2 of drapes & 1.5 m of pelmets installed Cost $578 $323 $4,470 $691 $1,399 $344 A6 Applied Yes Yes Yes No No Yes No No Yes Yes No Details 75.2 m2 of R3.5 installed Reduced from 1.82 to 0.5 ACH 36.3 m of wall cavity sealed 83.7 m2 of R3.5 installed 3.0 m2 of Double Glazing installed 2.96 m2 of drapes installed Cost $722 $456 $384 $2,969 $1,718 $327 A7 Applied No Yes Yes No No Yes Yes No Yes Yes No Details Reduced from 1.43 to 0.5 ACH 52.6 m length of wall cavity blocked 83.4 m2 of R1.5 installed 7.6 m2 of R2.5 installed 3.5 m2 of Double Glazing installed 3.5 m2 of drapes & 2.0 m of pelmets installed Cost $630 $557 $2,959 $404 $2,046 $492 A8 Applied Yes Yes No Yes Yes Yes Yes No Yes Yes No Details 132.4 m2 of R3.5 installed Reduced from 1.14 to 0.5 ACH 30.8 m perimeter of subfloor enclosed 157.6 m2 of R1.5 installed 176.8 m2 of R2.5 installed 25.1 m2 of R2.5 installed 16.9 m2 of Double Glazing installed 13.3 m2 of drapes & 5.6 m of pelmets installed Cost $1,271 $776 $814 $2,734 $7,763 $695 $9,825 $1,761 A9 Applied No Yes No Yes No Yes Yes No Yes Yes Yes
Details Reduced from 0.87 to 0.5 ACH 9.7 m perimeter of subfloor enclosed 150.1 m2 of R2.5 installed 25.7 m2 of R2.5 installed 17.4 m2 of Double Glazing installed 14.2 m2 of drapes & 5.1 m of pelmets installed 6.9 m2 of canvas awnings installed Cost $426 $255 $6,629 $699 $10,073 $1,833 $1,072 A10 Applied No Yes Yes No No Yes No No Yes Yes Yes Details Reduced from 1.68 to 0.5 ACH 49.3 m length of wall cavity blocked 105.6 m2 of R3.5 installed 24.6 m2 of Double Glazing installed 19.7 m2 of drapes installed 3.4 m2 of canvas awnings installed Cost $458 $522 $3,682 $14,289 $2,180 $521 A11 Applied No Yes Yes No Yes Yes No No Yes Yes No Details Reduced from 0.85 to 0.5 ACH 63 m length of wall cavity blocked 149.8 m2 of R1.5 installed 119.0 m2 of R3.5 installed 18.0 m2 of Double Glazing installed 23.6 m2 of drapes & 6.0 m of pelmets installed Cost $505 $667 $2,600 $4,118 $10,445 $2,927 A12 Applied No Yes No No No Yes No No Yes Yes No Details Reduced from 1.4 to 0.5 ACH 104.4 m2 of R2.5 installed 8.6 m2 of Double Glazing installed 4.1 m2 of drapes installed Cost $620 $4,686 $4,988 $456 A13 Applied No Yes Yes No No Yes No Yes Yes Yes No Details Reduced from 1.65 to 0.5 ACH 59.2 m length of wall cavity 219.7 m2 of R3.5 installed 124.4 m2 of R1.5 installed 33.4 m2 of Double Glazing 31.9 m2 of drapes & 21.9 m of
blocked installed pelmets installed Cost $795 $627 $8,740 $722 $19,347 $4,669 A14 Applied No Yes No Yes No Yes Yes No Yes Yes No Details Reduced from 1.35 to 0.5 ACH 12.5 m perimeter of subfloor enclosed 113.1 m2 of R2.5 installed 16.4 m2 of R2.5 installed 6.0 m2 of Double Glazing installed 6.0 m2 of drapes installed Cost $404 $330 $5,056 $483 $3,461 $659 A15 Applied Yes Yes Yes No No Yes No No Yes Yes Yes Details 90.3 m2 of R3.5 installed Reduced from 0.98 to 0.5 ACH 41.9 m length of wall cavity blocked 168.0 m2 of R1.5 installed 23.0 m2 of Double Glazing installed 15.5 m2 of drapes & 6.7 m of pelmets installed 17.5 m2 of canvas awnings installed Cost $867 $747 $444 $6,297 $13,338 $2,069 $2,702 B1 Applied No Yes Yes No Yes Yes Yes No Yes Yes Yes Details Reduced from 4.29 to 0.5 ACH 57.9 m of wall cavity blocked 132.6 m2 of R1.5 installed 98.5 m2 of R3.5 installed 43.0 m2 of R2.5 installed 39.8 m2 of Double Glazing installed 31.0 m2 of drapes & 16.2 m of pelmets installed 16.4 m2 of canvas awnings installed Cost $1,285 $613 $2,300 $3,452 $854 $23,072 $4,265 $2,528 B2 Applied No Yes Yes No Yes Yes No Yes Yes Yes No Details Reduced from 2.03 to 0.5 ACH 48.5 m of wall cavity blocked 106.3 m2 of R1.5 installed 55.7 m2 of R3.5 installed 106.3 m2 of R2.5 installed 25.3 m2 of Double Glazing installed 12.1 m2 of drapes & 7.8 m of pelmets installed
131.5 m2 of R3.5 installed Cost $1,455 $488 $1,218 $8,016 $486 $25,352 $5,263 $3,428 B7 Applied No Yes No No No Yes No Yes Yes Yes No Details Reduced from 1.12 to 0.5 ACH 124.1 m2 of R1.5 installed 107.3 m2 of R2.5 installed 11.2 m2 of Double Glazing installed 11.2 m2 of drapes & 8.3 m of pelmets installed Cost $776 $5,153 $837 $6,519 $1,675 B8 Applied Yes Yes Yes No Yes No No No Yes Yes No Details 14.0 m2 of R3.5 installed Reduced from 1.91 to 0.5 ACH 46.1 m length of wall cavity blocked 132.5 m2 of R1.5 installed 38.3 m2 of Double Glazing installed 14.4 m of pelmets installed Cost $135 $1,380 $488 $2,298 $22,200 $751 B9 Applied No Yes Yes No Yes Yes No Yes Yes Yes No Details Reduced from 1.59 to 0.5 ACH 56.2 m length of wall cavity blocked 128.2 m2 of R1.5 installed 6.5 m2 of R2.5 & 77.8 m2 of R3.5 installed 128.2 m2 of R2.0 installed 41.9 m2 of Double Glazing installed 35.8 m2 of drapes & 19.7 m of pelmets installed Cost $1,450 $595 $2,225 $2,990 $885 $24,325 $4,988 B10 Applied No Yes Yes No Yes Yes No No Yes Yes Yes Details Reduced from 4.41 to 0.5 ACH 36.2 m length of wall cavity 73.7 m2 of R1.5 installed 7.5 m2 of R2.5 & 63.4 m2 of R3.5 7.7 m2 of Double Glazing 6.8 m2 of drapes & 4.5 m of 3.7 m2 of canvas awnings
blocked installed installed pelmets installed installed Cost $1,280 $384 $1,279 $2,556 $4,489 $980 $570 B11 Applied No Yes No Yes Yes Yes No Yes Yes Yes No Details Reduced from 2.15 to 0.5 ACH 65.4 m perimeter of subfloor enclosed 160.1 m2 of R1.5 installed 77.4 m2 of R2.5 & 15.2 m2 of R3.5 installed 79.9 m2 of R1.5 & 34.3 m2 of R2.5 installed 18.5 m2 of Double Glazing installed 17.5 m2 of drapes & 8.7 m of pelmets installed Cost $1,440 $1,727 $2,778 $4,186 $764 $10,742 $2,391 B12 Applied No Yes No No No Yes No Yes Yes Yes Yes Details Reduced from 1.1 to 0.5 ACH 105.8 m2 of R1.5 installed 155.3 m2 of R1.5 installed 15.6 m2 of Double Glazing installed 13.0 m2 of drapes & 5.1 m of pelmets installed 11.8 m2 of canvas awnings installed Cost $1,035 $3,681 $964 $9,025 $1,698 $1,818 B13 Applied No Yes Yes No No Yes No No Yes Yes Yes Details Reduced from 2.49 to 0.5 ACH 58.5 m length of wall cavity blocked 144.0 m2 of R1.5 installed 33. m2 of Double Glazing installed 28.1 m2 of drapes & 16.2 m of pelmets installed 9.7 m2 of canvas awnings installed Cost $1,495 $619 $4,930 $19,146 $3,950 $1,500 B14 Applied No Yes Yes No No Yes No No Yes Yes Yes Details Reduced from 3.48 to 0.5 ACH 42.1 m length of wall cavity blocked 96.1 m2 of R3.5 installed 5.0 m2 of Double Glazing installed 5.0 m2 of drapes & 2.4 m of pelmets 5.3 m2 of canvas awnings installed
installed Cost $795 $446 $3,372 $2,923 $682 $815 B15 Applied No Yes Yes No Yes Yes No Yes Yes Yes Yes Details Reduced from 1.77 to 0.5 ACH 54.8 m length of wall cavity blocked 82.0 m2 of R1.5 installed 66.4 m2 of R3.5 installed 82.0 m2 of R1.5 installed 19.3 m2 of Double Glazing installed 16.4 m2 of drapes & 8.1 m of pelmets installed 2.2 m2 of canvas awnings installed Cost $653 $581 $1,422 $2,408 $509 $11,171 $2,232 $333 B16 Applied No Yes No No No Yes Yes No Yes Yes Yes Details Reduced from 1.63 to 0.5 ACH 69.7 m2 of R1.5 installed 42.0 m2 of R2.5 installed 14.9 m2 of Double Glazing installed 14.6 m2 of drapes & 7.2 m of pelmets installed 4.0 m2 of canvas awnings installed Cost $926 $2,863 $846 $8,665 $1,986 $611 B17 Applied No Yes No Yes No Yes Yes No Yes Yes Yes Details Reduced from 2.29 to 0.5 ACH 26.8 m perimeter of subfloor enclosed 19.6 m2 of R1.5 & 22.4 m2 of R2.5 & 78.7 m2 of R3.5 installed 162.8 m2 of R2.5 installed 40.8 m2 of Double Glazing installed 37.4 m2 of drapes & 16.0 m of pelmets installed 16.4 m2 of canvas awnings installed Cost $1,300 $706 $4,593 $2,128 $23,677 $4,968 $2,534 B18 Applied No Yes Yes No Yes Yes No No Yes Yes No Details Reduced from 2.5 to 0.5 ACH 47.3 m length of wall cavity 101.8 m2 of R1.5 installed 97.4 m2 of R3.5 installed 26.6 m2 of Double Glazing 18.3 m2 of drapes & 12.1 m of
blocked installed pelmets installed Cost $1,111 $501 $1,767 $3,415 $15,428 $2,655 B19 Applied No Yes No No No Yes No No Yes Yes No Details Reduced from 1.54 to 0.5 ACH 80.5 m2 of R3.5 installed 10.6 m2 of Double Glazing installed 7.6 m2 of drapes & 4.2 m of pelmets installed Cost $1,272 $3,267 $6,160 $1,061 B20 Applied No Yes No No Yes Yes Yes No Yes Yes No Details Reduced from 2.17 to 0.5 ACH 69.9 m2 of R1.5 installed 82.8 m2 of R2.5 installed 5.5 m2 of R2.5 installed 9.3 m2 of Double Glazing installed 8.5 m2 of drapes & 7.4 m of pelmets installed Cost $659 $1,212 $3,770 $385 $5,411 $1,327 B21 Applied No Yes No No No Yes No Yes Yes Yes No Details Reduced from 0.62 to 0.5 ACH 126.7 m2 of R1.5 installed 263.8 m2 of R2.0 installed 35.2 m2 of Double Glazing installed 21.2 m2 of drapes & 14.1 m of pelmets installed Cost $1,197 $4,369 $1,820 $20,393 $3,082 B22 Applied Yes Yes No Yes Yes Yes Yes No Yes Yes No Details 81.46 m2 of R3.5 installed Reduced from 0.95 to 0.5 ACH 40.2 m perimeter of subfloor enclosed 88.6 m2 of R1.5 installed 105.1 m2 of R2.5 installed 7.01 m2 of R2.5 installed 11.4 m2 of Double Glazing installed 11.4 m2 of drapes & 7.0 m of pelmets
installed Cost $927 $950 $2,855 $486 $3,758 $904 B27 Applied No Yes No No No No No Yes Yes Yes Yes Details Reduced from 0.64 to 0.5 ACH 179.8 m2 of R1.5 installed 14.6 m2 of Double Glazing installed 14.6 m2 of drapes & 7.2 m of pelmets installed 5.4 m2 of canvas awnings installed Cost $1,212 $1,117 $8,456 $1,986 $833 B28 Applied No Yes No No No Yes No Yes Yes Yes No Details Reduced from 1.96 to 0.5 ACH 73.8 m2 of R3.5 installed 82.0 m2 of R1.5 installed 14.9 m2 of Double Glazing installed 13.5 m2 of drapes & 9.0 m of pelmets installed Cost $849 $2,647 $509 $8,665 $1,961 B29 Applied Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Details 7.6 m2 of R3.5 installed Reduced from 3.89 to 0.5 ACH 46.4 m length of wall cavity blocked 66.4 m2 of R1.5 installed 86.0 m2 of R3.5 installed 9.1 m2 of R2.5 installed 89.7 m2 of R1.5 installed 20.2 m2 of Double Glazing installed 3.8 m2 of drapes & 9.86 m of pelmets installed 2.1 m2 of canvas awnings installed Cost $73 $1,260 $492 $1,152 $3,044 $417 $557 $11,743 $934 $324 B30 Applied No Yes Yes No No Yes Yes No Yes Yes Yes Details Reduced from 2.02 to 0.5 ACH 24.3 m of wall cavity sealed 182.1 m2 of R1.5 & 1.4 m2 of R2.5 & 11.8 m2 of 65.2 m2 of R2.5 & 82.2 m2 of R3.5 installed 6.6 m2 of Double Glazing installed 6.6 m2 of drapes & 2.4 m of pelmets 21.7 m2 of canvas awnings installed
R3.5 installed installed Cost $929 $421 $6,598 $1,990 $3,805 $852 $3,352 C1 Applied No Yes No Yes No Yes No Yes Yes Yes No Details Reduced from 1.70 to 0.5 ACH 26.7 m perimeter of subfloor enclosed 160.6 m2 of R2.5 installed 182.5 m2 of R2.0 installed 32.6 m2 of Double Glazing installed 26.4 m2 of drapes & 12.7 m of pelmets installed Cost $1,276 $704 $7,075 $1,259 $18,914 $3,576 C2 Applied No Yes Yes No Yes Yes No Yes Yes Yes No Details Reduced from 2.21 to 0.5 ACH 48.3 m length of wall cavity blocked 105.1 m2 of R1.5 installed 90.6 m2 of R3.5 installed 105.1 m2 of R2.0 installed 36.2 m2 of Double Glazing installed 4.0 m2 of drapes & 16.3 m of pelmets installed Cost $1,083 $512 $1,823 $3,194 $725 $21,013 $1,289 C3 Applied No Yes No No Yes Yes No Yes Yes Yes Yes Details Reduced from ACH to 0.5 ACH 144.2 m2 of R1.5 installed 157.8 m2 of R1.5 installed 17.5 m2 of R2.0 installed 62.6 m2 of Double Glazing installed 11.4 m2 of drapes & 18.64m of pelmets installed 16.7 m2 of canvas awnings installed Cost $1,104 $2,501 $6,167 $121 $36,314 $2,230 $2,577 C4 Applied No Yes No No No Yes No Yes Yes Yes Yes Details Reduced from 1.62 to 0.5 ACH 84.2 m2 of R1.5 installed 85.6 m2 of R1.5 installed 24.7 m2 of Double Glazing 15.3 m2 of drapes & 11.7m of 24.7 m2 of canvas awnings
installed Cost $702 $2,028 $1,520 $9,367 $1,432 $1,199 C9 Applied No Yes Yes No No Yes Yes Yes Yes Yes Yes Details Reduced from 2.37 to 0.5 ACH 33.4 m length of wall cavity blocked 68.1 m2 of R1.5 installed, 33.6 m2 of R3.5 installed 24.7 m2 of R2.5 installed 95.4 m2 of R2.0 installed 17.2 m2 of Double Glazing installed 15.4 m2 of drapes & 5.4 m of pelmets installed 1.2 m2 of canvas awnings installed Cost $2,090 $354 $3,555 $691 $658 $9,953 $1,987 $179 C10 Applied No Yes Yes No No Yes No Yes Yes Yes Yes Details Reduced from 2.05 to 0.5 ACH 34.7 m length of wall cavity blocked 23.7 m2 of R3.5 installed 66.6 m2 of R2.0 installed 9.6 m2 of Double Glazing installed 1.6 m of pelmets installed 5.9 m2 of canvas awnings installed Cost $940 $367 $1,021 $459 $5,568 $83 $911 C11 Applied No Yes Yes No No Yes No Yes Yes Yes No Details Reduced from 1.12 to 0.5 ACH 43.7 m length of wall cavity blocked 107.6 m2 of R1.5 installed 105.8 m2 of R2.0 installed 41.1 m2 of Double Glazing installed 39.0 m2 of drapes & 32.6 m of pelmets installed Cost $2,078 $463 $3,748 $730 $23,834 $6,006 C12 Applied No Yes No No No Yes Yes No Yes Yes No Details Reduced from 1.11 to 0.5 ACH 104.1 m2 of R2.5 installed 17.9 m2 of R2.5 installed 5.9 m2 of Double Glazing installed 5.9 m2 of drapes & 4.2 m of pelmets
installed Cost $849 $4,675 $496 $3,422 $871 C13 Applied No Yes Yes No Yes Yes No No Yes Yes Yes Details Reduced from 1.32 to 0.5 ACH 52.0 m length of wall cavity blocked 113.1 m2 of R1.5 installed 91.7 m2 of R3.5 installed 26.4 m2 of Double Glazing installed 25.6 m2 of drapes & 14.1 m of pelmets installed 19.1 m2 of canvas awnings installed Cost $844 $551 $1,962 $3,229 $15,312 $3,564 $2,948 C14 Applied No Yes Yes No Yes Yes No No Yes Yes Yes Details Reduced from 1.27 to 0.5 ACH 54.5 m length of wall cavity blocked 114.9 m2 of R1.5 installed 79.2 m2 of R3.5 installed 15.6 m2 of Double Glazing installed 15.0 m2 of drapes & 7.1 m of pelmets installed 11.3 m2 of canvas awnings installed Cost $890 $577 $1,994 $2,823 $9,048 $2,027 $1,744 C15 Applied No Yes Yes No No Yes Yes No Yes Yes No Details Reduced from 1.32 to 0.5 ACH 55.8 m length of wall cavity blocked 107.4 m2 of R3.5 installed 28.3 m2 of R2.5 installed 32.6 m2 of Double Glazing installed 2.9 m2 of drapes & 8.6 m of pelmets installed Cost $1,360 $591 $3,742 $723 $18,909 $773
Applied to Saving (kg/Yr) Saving ($) ($/Yr) Payback (Yrs) Across stock Solar - first 81.7% 7,502 864 8,366 677.6 $174.5 $3,825.4 21.9 Solar - analysis 81.7% 7,064 795 7,859 632.4 $163.4 $3,825.4 23.4 When Implemented Solar - first 81.7% 9,186 1,058 10,244 829.7 $213.6 $4,684.1 21.9 Solar - analysis 81.7% 8,650 973 9,624 774.4 $200.0 $4,684.1 23.4 Undertaking the low flow shower rose measure after the high efficiency gas water heater upgrade reduces the average savings by around 5%, leading to a slight increase in the stock average payback. However, the low flow shower rose upgrade measure remains the most cost effective upgrade measure. TABLE A57: IMPACT OF THE ORDER OF THE WATER HEATING UPGRADES ON SAVINGS – LOW FLOW SHOWER ROSE Energy Saving (MJ/Yr) Measure % Houses Applied to Gas Elec Total Av. GHG Saving (kg/Yr) Av. Saving ($/Yr) Av. Cost ($/Yr) Av. Payback (Yrs) Across stock LF Shower Rose - analysis 56.7% 1,333 69 1,402 94.7 $57.9 $48.8 0.84 LF Shower Roes - after HE Gas water heater 56.7% 1,331 0 1,331 73.6 $54.5 $48.8 0.89 When Implemented LF Shower Rose - analysis 56.7% 2,352 122 2,473 167.1 $102.3 $86.0 0.84 LF Shower Roes - after HE Gas water heater 56.7% 2,349 0 2,349 130.0 $96.1 $86.0 0.89 A6: Assumptions for Upgrade Analysis Energy tariffs and greenhouse coefficients The greenhouse gas emission coefficients and energy tariffs which have been used in the OGA study analysis are provided in Table A48. The greenhouse coefficient for natural gas uses the figure from the National Greenhouse Accounts Factors workbook for 2012.
2 Draught sealing Comprehensive air sealing, based air leakage sites identified using blower door test - Cost estimate supplied by ABT - Air Barrier Technologies (ABT) 3 Seal wall cavity Cost per lineal meter with RFL (incl GST) - tiled roof m $10.59 - Based on estimate of Tony Isaacs using Rawlinsons Cost per lineal meter - no RFL (incl GST) - tiled roof m $8.73 - Based on estimate of Tony Isaacs using Rawlinsons Cost per lineal meter with RFL (incl GST) - tin roof m $17.30 - Based on estimate of Tony Isaacs using Rawlinsons Cost per lineal meter - no RFL (incl GST) - tin roof m $15.43 - Based on estimate of Tony Isaacs using Rawlinsons 4 Reduce ventilation Cost for sealing up totally open sub-floor with (applicable for all floors) m2 $26.39 - Based on estimate of Tony Isaacs using Rawlinsons 5 Underfloor insulation Glasswool batt R1.5 m2 $17.35 - ICANZ 2012 No. Upgrade Description Unit Unit Cost ($) Extra costs Source 6 Wall insulation Cost for single storey brick cavity wall house with tile roof and limited drilling required m2 $32.50 $250 Industry sources Cost for framed houses where significant drilling is required m2 $42.50 $250 Industry sources Cost for single story cavity brick walls with roofing iron instead of tiles m2 $37.50 $250 Industry sources Cost for double story brick cavity wall house with tile roof and limited drilling required m2 $36.00 $250 Industry sources Cost for double story cavity brick walls with roofing iron instead of tiles m2 $37.50 $250 Industry sources Safety harness for difficult houses/double story houses fixed cost - $250 Industry sources