NCC 2022 Volume Two - Building Code of Australia Class 1 and 10 buildings
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H6
Part H6 Energy efficiencyPart H6 Energy efficiency
This Part is intended to improve the efficient use of energy in building design and construction, as well as the energy usage by key equipment installed in a building.
From 1 May 2023 to 30 September 2023 Part 2.6 and Part 3.12 of NCC 2019 Volume Two Amendment 1 may apply instead of Part H6 of NCC 2022 Volume Two. From 1 October 2023 Part H6 of NCC 2022 Volume Two applies.
Objectives
H6O1
Objective
2019: O2.6
The Objective of this Part is to —
Functional Statements
H6F1
Energy efficiency
2019: F2.6
A building must—
Performance Requirements
H6P1
Thermal performance
2019: P2.6.1
H6P2
Energy usage
2019: P2.6.2
Verification Methods
H6V1
Application of H6V2 and H6V3
2019: V2.6.1
The Verification Methods in this Part only apply to—
The Victorian NCC 2019 rainwater tank variation (VIC V2.6.1 and V3.12.0 respectively) remains in effect until 30 September 2023 after which the following takes effect:
A rainwater tank must be installed in a Class 1 building in accordance with the regulations made under the Building Act 1993 (Victoria).
This Victorian rainwater tank requirement is now found in NCC 2022 Volume Three (Clauses VIC B6D2 and VIC B7D4).
Application of H6V2 and H6V3
The Verification Methods in this Part only apply to—
The Verification Methods in this Part are intended to apply to whole Class 1 buildings and to whole Class 1 buildings that incorporate attached and enclosed Class 10a parts, such as attached garages. The Verification Methods are not intended to apply to detached garages or to open carports.
H6V2
Verification using a reference building
2019: V2.6.2.2
This clause has deliberately been left blank.
Verification using a reference building
Hour ending at | Habitable rooms other than bedrooms | Bedrooms |
---|---|---|
1:00 | OFF | ON |
2:00 | OFF | ON |
3:00 | OFF | ON |
4:00 | OFF | ON |
5:00 | OFF | ON |
6:00 | OFF | ON |
7:00 | ON | ON |
8:00 | ON | ON |
9:00 | ON | ON |
10:00 | ON | OFF |
11:00 | ON | OFF |
12:00 | ON | OFF |
13:00 | ON | OFF |
14:00 | ON | OFF |
15:00 | ON | OFF |
16:00 | ON | OFF |
17:00 | ON | OFF |
18:00 | ON | OFF |
19:00 | ON | ON |
20:00 | ON | ON |
21:00 | ON | ON |
22:00 | ON | ON |
23:00 | ON | ON |
0:00 | OFF | ON |
Floor area of habitable rooms (m²) | Occupancy (m²/occupant) | Cooking equipment load (W/m² of kitchen area) |
---|---|---|
100 | 41.2 | 36.2 |
125 | 44.3 | 34.7 |
150 | 47.8 | 28.9 |
175 | 51.7 | 24.8 |
200 | 55.8 | 25.3 |
225 | 60.0 | 22.5 |
250 | 64.4 | 20.2 |
275 | 68.9 | 18.4 |
300 | 73.3 | 16.9 |
325 | 77.5 | 15.6 |
350 | 81.6 | 14.5 |
375 | 85.4 | 13.5 |
400 | 89.0 | 12.7 |
Hour ending at | Weekday occupancy in habitable rooms other than bedrooms | Weekend occupancy in habitable rooms other than bedrooms | Weekday and weekend bedroom occupancy |
---|---|---|---|
1:00 | 0% | 0% | 100% |
2:00 | 0% | 0% | 100% |
3:00 | 0% | 0% | 100% |
4:00 | 0% | 0% | 100% |
5:00 | 0% | 0% | 100% |
6:00 | 0% | 0% | 100% |
7:00 | 30% | 30% | 50% |
8:00 | 30% | 30% | 50% |
9:00 | 100% | 30% | 50% |
10:00 | 100% | 100% | 0% |
11:00 | 50% | 100% | 0% |
12:00 | 50% | 100% | 0% |
13:00 | 50% | 100% | 0% |
14:00 | 50% | 50% | 0% |
15:00 | 50% | 50% | 0% |
16:00 | 50% | 50% | 0% |
17:00 | 100% | 50% | 0% |
18:00 | 100% | 50% | 0% |
19:00 | 100% | 100% | 50% |
20:00 | 100% | 100% | 50% |
21:00 | 100% | 100% | 50% |
22:00 | 30% | 100% | 100% |
23:00 | 30% | 30% | 100% |
0:00 | 0% | 0% | 100% |
Hour ending at | Lighting | Cooking | Appliances |
---|---|---|---|
1:00 | 0% | 0% | 45% |
2:00 | 0% | 0% | 40% |
3:00 | 0% | 0% | 40% |
4:00 | 0% | 0% | 40% |
5:00 | 0% | 0% | 40% |
6:00 | 0% | 0% | 40% |
7:00 | 10% | 5% | 50% |
8:00 | 10% | 10% | 70% |
9:00 | 5% | 10% | 55% |
10:00 | 0% | 15% | 50% |
11:00 | 0% | 15% | 50% |
12:00 | 0% | 15% | 50% |
13:00 | 0% | 20% | 50% |
14:00 | 0% | 20% | 50% |
15:00 | 0% | 20% | 50% |
16:00 | 0% | 20% | 50% |
17:00 | 0% | 25% | 75% |
18:00 | 20% | 40% | 95% |
19:00 | 30% | 80% | 80% |
20:00 | 35% | 80% | 70% |
21:00 | 30% | 40% | 70% |
22:00 | 25% | 20% | 65% |
23:00 | 15% | 10% | 55% |
0:00 | 0% | 5% | 55% |
H6V3
Verification of building envelope sealing
2019: V2.6.2.3
The intent is that 10 m3/hr.m2 at 50 Pa is broadly equivalent to 10 air changes per hour at 50 Pa when applied to homes.
Deemed-to-Satisfy Provisions
H6D1
Deemed-to-Satisfy Provisions
New for 2022
H6D2
Application of Part H6
2019: 3.12.0
The Victorian NCC 2019 rainwater tank variation (VIC V2.6.1 and V3.12.0 respectively) remains in effect until 30 September 2023 after which the following takes effect:
A rainwater tank must be installed in a Class 1 building in accordance with the regulations made under the Building Act 1993 (Victoria).
This Victorian rainwater tank requirement is now found in NCC 2022 Volume Three (Clauses VIC B6D2 and VIC B7D4).
There are two Deemed-to-Satisfy pathways for complying with the energy efficiency Performance Requirements:
Application of Part H6
There are two Deemed-to-Satisfy pathways for complying with the energy efficiency Performance Requirements:
Hour ending at | Habitable rooms other than bedrooms | Bedrooms |
---|---|---|
1:00 | OFF | ON |
2:00 | OFF | ON |
3:00 | OFF | ON |
4:00 | OFF | ON |
5:00 | OFF | ON |
6:00 | OFF | ON |
7:00 | ON | ON |
8:00 | ON | ON |
9:00 | ON | ON |
10:00 | ON | OFF |
11:00 | ON | OFF |
12:00 | ON | OFF |
13:00 | ON | OFF |
14:00 | ON | OFF |
15:00 | ON | OFF |
16:00 | ON | OFF |
17:00 | ON | OFF |
18:00 | ON | OFF |
19:00 | ON | ON |
20:00 | ON | ON |
21:00 | ON | ON |
22:00 | ON | ON |
23:00 | ON | ON |
0:00 | OFF | ON |
Floor area of habitable rooms (m²) | Occupancy (m²/occupant) | Cooking equipment load (W/m² of kitchen area) |
---|---|---|
100 | 41.2 | 36.2 |
125 | 44.3 | 34.7 |
150 | 47.8 | 28.9 |
175 | 51.7 | 24.8 |
200 | 55.8 | 25.3 |
225 | 60.0 | 22.5 |
250 | 64.4 | 20.2 |
275 | 68.9 | 18.4 |
300 | 73.3 | 16.9 |
325 | 77.5 | 15.6 |
350 | 81.6 | 14.5 |
375 | 85.4 | 13.5 |
400 | 89.0 | 12.7 |
Hour ending at | Weekday occupancy in habitable rooms other than bedrooms | Weekend occupancy in habitable rooms other than bedrooms | Weekday and weekend bedroom occupancy |
---|---|---|---|
1:00 | 0% | 0% | 100% |
2:00 | 0% | 0% | 100% |
3:00 | 0% | 0% | 100% |
4:00 | 0% | 0% | 100% |
5:00 | 0% | 0% | 100% |
6:00 | 0% | 0% | 100% |
7:00 | 30% | 30% | 50% |
8:00 | 30% | 30% | 50% |
9:00 | 100% | 30% | 50% |
10:00 | 100% | 100% | 0% |
11:00 | 50% | 100% | 0% |
12:00 | 50% | 100% | 0% |
13:00 | 50% | 100% | 0% |
14:00 | 50% | 50% | 0% |
15:00 | 50% | 50% | 0% |
16:00 | 50% | 50% | 0% |
17:00 | 100% | 50% | 0% |
18:00 | 100% | 50% | 0% |
19:00 | 100% | 100% | 50% |
20:00 | 100% | 100% | 50% |
21:00 | 100% | 100% | 50% |
22:00 | 30% | 100% | 100% |
23:00 | 30% | 30% | 100% |
0:00 | 0% | 0% | 100% |
Hour ending at | Lighting | Cooking | Appliances |
---|---|---|---|
1:00 | 0% | 0% | 45% |
2:00 | 0% | 0% | 40% |
3:00 | 0% | 0% | 40% |
4:00 | 0% | 0% | 40% |
5:00 | 0% | 0% | 40% |
6:00 | 0% | 0% | 40% |
7:00 | 10% | 5% | 50% |
8:00 | 10% | 10% | 70% |
9:00 | 5% | 10% | 55% |
10:00 | 0% | 15% | 50% |
11:00 | 0% | 15% | 50% |
12:00 | 0% | 15% | 50% |
13:00 | 0% | 20% | 50% |
14:00 | 0% | 20% | 50% |
15:00 | 0% | 20% | 50% |
16:00 | 0% | 20% | 50% |
17:00 | 0% | 25% | 75% |
18:00 | 20% | 40% | 95% |
19:00 | 30% | 80% | 80% |
20:00 | 35% | 80% | 70% |
21:00 | 30% | 40% | 70% |
22:00 | 25% | 20% | 65% |
23:00 | 15% | 10% | 55% |
0:00 | 0% | 5% | 55% |