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Double-glazed windows retain up to 30% more heat and conditioned air than single-glazed windows.

By upgrading your windows, you can reduce your electric bills and save energy.

Eligibility

Victorian households and most businesses with single-glazed windows can receive discounts for window upgrades.

  • You must install an approved product to be eligible for incentives. To find an approved product:
  • visit the product register
  • select the following from the drop down menu:
    • For double glazing – ‘13(18) - Double glazed window’.
    • For secondary glazing creating an air gap – ‘14(18) - Thermally efficient window product’.
  • click search.

If you have installed an eligible product and would like to organise a retrospective rebate, an accredited provider may be able to guide you through the process.

Living in a rental property?

If you’re living in a private rental property, you are eligible to receive a discount on window glazing.

We recommend that landlords and tenants work together when doing any upgrades to a rental property.

To learn more, visit renters, landlords and body corporate.

How much discount to expect

Discounts for window upgrades for businesses and households.

Existing Windows

Replacement or upgrade

Indicative discount*

4 x large single-glazed, aluminium framed windows.

4 x large double-glazed windows with a WERS rating of 4.2 heating stars (totalling 10m2).

$210

4 x large single-glazed, aluminium framed windows.

Products with glass or acrylic glazing (totalling 10m2) are installed in 4 x large existing single glazed windows, creating an air gap between the two layers of glazing.

$140

*Your final installation cost, including your discount, is determined by your accredited provider.

This cost depends on your:

  • certificate price (which fluctuates)
  • choice of product and/ or upgrade
  • location
  • installation costs
  • accredited provider’s administrative costs.

For more information on certificate prices under the VEU program, please visit Victorian Energy Efficiency Certificates (VEECs).

Find an accredited provider in your area

Accredited providers often work with installers who are not listed on the registry.

Please note that as VEU is a market-based program:

  • not all accredited providers listed above will necessarily be offering window upgrades at present
  • accredited providers can choose when and where they undertake upgrades.

Page last updated: 07/03/25