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What is a Low-E window Film
According to data from the Australian government’s Energy Efficiency Exchange, electricity usage related to heating, ventilation and air-conditioning (HVAC) typically accounts for approximately 40 per cent of total building energy consumption and 70 per cent of base building energy consumption.
On average since the year 2000 Australian household energy prices have risen 9% annually, based on the Australian Bureau of Statics Energy Pricing Index.
HVAC makes up such a large portion of these associated costs for energy consumption, because of this low-cost solution to help reduce expenditure on HVAC are highly sought after.
Low E window films are just that, data acquired from the Australian Department of Environment and Energy shows that windows with inadequate coatings lead to on average 25 to 30% of all energy wasted from commercial buildings.
Energy Savings
Low-E Window Films have a great by back period based on the ability to reduce heat transfer via windows and glass which drastically reduces heating and cooling costs.
Warranty
There are only a limited number of brands that produce genuinely certified Low-E films and pass the WERS testing to be categorised as such. This ensures that all brands offer long term warranties and guarantees on their products.
Return on Investment
With a high performing Low-E window film, you can anticipate an estimated buyback period of 3-6 years depending on individual circumstances. This is one of the shortest ROI periods in the range of HVAC related products.
Low E Films VS Low-E Glass
There are many options in the market for improving window energy efficiency, from double glazed glass to smart-window technologies – however, these can be very costly particularly for retrofitting.
Low E films provide a cost-effective retrofit solution capable of ease of install at a marginal cost compared with glazing and smart-window technologies.
3M and Solar Gard both have scientifically backed data to show that Low E films can reduce solar heat gains in summer by up to 72% and in cooler months retain heat by up to 24%.
Low E or Low Emissivity Films have a 2-fold gain in terms of heat retention in the cooler months and blocking out heat in the warmer months.
To find out further information in relation to glazing and retrofit Low-E Films, visit the yourhome.gov website.
