NSW Part H6 Energy efficiency

(1) Thermal insulation in a building must be installed in a manner and have characteristics, which facilitate the efficient use of energy for artificial heating and cooling.

(2) A building must have, to the degree necessary, thermal breaks installed between the framing and external cladding, to facilitate efficient thermal performance of the building envelope.

A building must have, to the degree necessary, a level of building sealing against air leakage to facilitate the efficient use of energy for artificial heating and cooling appropriate to—

1. the function and use of the building; and
2. the internal environment; and
3. the geographic location of the building.

Domestic services, including any associated distribution system and components must, to the degree necessary, have features that facilitate the efficient use of energy appropriate to—

1. the domestic service and its usage; and
2. the geographic location of the building; and
3. the location of the domestic service; and
4. the energy source.

The Verification Method in this Part only apply to—

1. a Class 1 building; and
2. an enclosed Class 10a building attached to a Class 1 building.

This clause has deliberately been left blank.

H6V2 does not apply in NSW.

(1) Compliance with NSW H6P2 is verified for building envelope sealing when a building envelope is sealed at an air permeability of not more than 10 m³/hr.m² at 50 Pa reference pressure when tested in accordance with AS/NZS ISO 9972 Method 1.

(2) Where an air permeability of not more than 5 m³/hr.m² at 50 Pa reference pressure is achieved—

1. a mechanical ventilation system must be provided that—
   1. can be manually overridden; and
   2. provides outdoor air, either—
      1. continuously; or
      2. intermittently, where the system has controls that enable operation for not less than 25 percent of each 4 hour segment; and
   3. provides a flow rate not less than that achieved with the following formula:

      $Q=(0.05\times A+3.5\times (N+1))/p$

      , where—

      1. $Q$

         = the required air flow rate (L/s); and

      2. $A$

         = the total floor area of the building (m²); and

      3. $N$

         = the number of bedrooms in the building; and

      4. $p$

         = the fraction of time within each 4 hour segment that the system is operational; and
2. any space with a solid-fuel burning combustion appliance must be ventilated with permanent openings directly to outside with a free area of not less than half of the cross-sectional area of the appliance’s flue; and
3. any space with a gas-fuelled combustion appliance must be ventilated in accordance with—
   1. clause 6.4 of AS/NZS 5601.1; and
   2. clause 6.4.5 of AS/NZS 5601.1.

(3) For the purposes of (2)(c), the volume of the space is considered to be 1 m³ for determining ventilation requirements.

(1) Where a Deemed-to-Satisfy Solution is proposed, Performance Requirements NSW H6P1 to NSW H6P3 are satisfied by complying with NSW H6D2.

(2) Where a Performance Solution is proposed, the relevant Performance Requirements must be determined in accordance with A2G2(3) and A2G4(3) as applicable.

(1) Performance RequirementNSW H6P1 is satisfied by complying with Part 13.2 of the ABCB Housing Provisions.

(2) Performance RequirementNSW H6P2 is satisfied by complying with Part 13.4 of the ABCB Housing Provisions.

(3) Performance RequirementNSW H6P3 is satisfied by complying with Part 13.7 of the ABCB Housing Provisions.