Achieving Energy Efficiency in Mild Climates
Climate Zones in NSW and SA
Most regions of NSW and SA are considered warm temperate climates, requiring a balance between reducing heating loads in winter and cooling loads in summer. For these climate zones it is important that your windows and doors have both a low U value (for better insulation) and a low Solar Heat Gain Co-efficient (SHGC), to prevent the heat from the sun entering your house.
Options for improving your Energy Efficiency through glass
To make your selection easier, we've created a good, better, and best glass offer for the NSW and SA climate zones, with tiered performance levels. While performance will be a major consideration in deciding which glass to use, other factors such as cost, window colour, availability, and lead times may also play a role. There are many other options available to meet a variety of needs; please contact your Trend representative for more information.
Energy Ratings
In addition to good design and orientation, the products and glazing we recommend below will assist in achieving 7-stars for your building.
Residential Awning Window
| WERS Code | Product Series | Option | Glass Type | U Value | SHGC |
| TND-002-015 | Synergy | Standard | Clear IGU | 4.1 | 0.57 |
| TND-002-028 | Synergy | Good | Low E Clear IGU | 3.3 | 0.45 |
| TND-120-002 | ThermaHybrid | Good | Low E Clear IGU | 2.9 | 0.46 |
| TND-120-023 | ThermaHybrid | Better | Double Coat Low E IGU | 2.7 | 0.43 |
| TND-102-033 | ThermaRes | Best | Double Coat Low E IGU | 2 | 0.38 |
Residential Sliding Window
| WERS Code | Product Series | Option | Glass Type | U Value | SHGC |
| TND-001-015 | Synergy | Standard | Clear IGU | 4.2 | 0.58 |
| TND-001-021 | Synergy | Good | Low E Clear IGU | 3.2 | 0.46 |
| TND-001-300 | Synergy | Better | Double Coat Low E IGU | 3.0 | 0.42 |
| TND-104-024 | ThermaRes | Best | Double Coat Low E IGU | 2.5 | 0.48 |
Residential Sliding Door
| WERS Code | Product Series | Option | Glass Type | U Value | SHGC |
| TND-017-009 | Synergy | Standard | Clear IGU | 3.8 | 0.63 |
| TND-017-022 | Synergy | Good | Low E Clear IGU | 2.8 | 0.49 |
| TND-017-300 | Synergy | Better | Double Coat Low E IGU | 2.6 | 0.45 |
| TND-108-024 | ThermaRes | Best | Double Coat Low E IGU | 1.7 | 0.44 |
Architectural Awning Window
| WERS Code | Product Series | Option | Glass Type | U Value | SHGC |
| TND-060-002 | Quantum | Standard | Clear IGU | 4.5 | 0.49 |
| TND-060-053 | Quantum | Good | Low E Clear IGU | 3.9 | 0.39 |
| TND-031-300 | Quantum | Better | Double Coat Low E IGU | 3.7 | 0.36 |
| TND-103-020 | ThermaArc | Best | Double Coat Low E IGU | 2.1 | 0.35 |
Architectural Sliding Door
| WERS Code | Product Series | Option | Glass Type | U Value | SHGC |
| TND-017-009 | Quantum | Standard | Clear IGU | 3.8 | 0.63 |
| TND-017-013 | Quantum | Good | Low E Clear IGU | 2.9 | 0.48 |
| TND-917-300 | Quantum | Better | Double Coat Low E IGU | 2.4 | 0.44 |
| TND-109-051 | ThermaArc | Best | Double Coat Low E IGU | 1.9 | 0.42 |
ACHIEVING ENERGY EFFICIENCY
Window and Door Specification for 7-stars
Download our window and door specification guide which includes the glass options for improving your energy efficiency to meet the 7-star requirements, as well as a cheat sheet of WERS values to make product selection easy.
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