Make a warmer more energy efficient home easier to fund

Many New Zealand banks now offer low-interest or interest-free green home loan top-ups to help you create a warmer, drier, and more energy-efficient home. Fortunately, eligible upgrades can include retrofit double glazing and secondary glazing.

Magnetite offers high-performance retrofit double glazing and secondary glazing solutions for your existing windows and doors, improving thermal efficiency without the cost or hassle of a full replacement. Because major banks explicitly recognise double glazing and secondary glazing as eligible upgrades, a green home loan could be the ideal way to fund your installation.

When you are ready to apply, Magnetite will provide the comprehensive written quote and installation details your bank requires.

Please note: Lending approval and eligibility criteria are determined solely by your bank.



Why use a green loan for Magnetite glazing

Keep existing windows
Keep your existing windows Magnetite is retrofitted to the inside of your existing windows, avoiding the disruption, waste and structural work involved in replacing the full window system.
Up to 70 percent
Improve thermal performance Magnetite systems have been independently tested and can improve the thermal efficiency of existing windows or doors by up to 70%, depending on the window and installed solution.
Spread the cost of the upgrade
Spread the cost of the upgrade Eligible homeowners may be able to fund the installation through a special-rate home loan top-up, subject to the bank’s lending criteria and current offer.


Request a Free Quote →
 

How green home loans work

Start with the project quote, then confirm eligibility directly with your bank.

1KGet a Magnetite quote
Get a Magnetite quote Book a free in-home measure and quote. We will assess your existing windows and recommend the most suitable solution.
2KGet a Magnetite quote
Check with your bank Ask whether your Magnetite glazing project qualifies under the bank's current offer.
3Apply before work begins
Apply before work begins The bank may need a valid quote and installation date. Obtain approval before paying for or completing the work.
4Confirm installation
Confirm installation Once finance and the project are confirmed, Magnetite will arrange professional installation.
 


Find out what your Magnetite project could cost

Get a free measure and written quote before speaking with your bank.


Request a Free Quote →
 

Compare green loans for window glazing

These New Zealand bank offers explicitly include double glazing or secondary glazing. Terms can change, so check the linked bank page before applying.


BankLoanPublished offerInitial termWindow glazing eligibility
anz logo Good Energy Home Loan Up to $80,000 at 1% p.a. 3 years Double, secondary or triple glazing
asb logo Better Homes Top Up Up to $80,000 at 1% p.a. 3 years Double, secondary or triple glazing
bnz logo Better Future Home Loan Top Up Up to $80,000 at 1% p.a. 3 years Double, secondary or triple glazing
westpac logo Greater Choices Home Loan Up to $50,000 at 0% p.a. 5 years Double glazing.

Published offers checked on 30 September 2026. Rates, limits, eligibility and fees may change without notice. Lending criteria, equity requirements, terms and conditions apply. At the end of a special fixed period, the bank’s applicable standard or floating rate may apply. Contact the bank or a licensed financial adviser before making a borrowing decision.

Hear From Some Happy Magnetite Customers!

“I’m super impressed with the product and install! Awesome product, I will be recommending to anyone that will listen. Thanks again for being so easy to deal with, and getting it done so quickly.”
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Rachel
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“I am thrilled with my ‘new’ windows & can honestly say ‘it’s the best investment I’ve made in my house”
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Judy
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“Already we think the sound difference from these windows is going to be genuinely life changing!”
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Strahan
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“I love the double glazing!! Thank you for a great job.”
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Wendy
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“I’ve noticed such a huge difference with the new windows. That room is warm and even this morning when the master was covered in condensation, there wasn’t a single drop on the nursery windows! Super impressed!”
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Rhonnie
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Thank you and your staff for being so honest and professional with our dealings. I can honestly say it has made a huge difference in the noise production. My husband is a shift worker and sleeps alot during the day and he has found it to be very good at blocking out the outside world.”
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Colleen
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Excellent to communicate with and delivered as promised. Lovely people and would happily recommend.
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Daniel
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I noticed a huge improvement immediately from being very cold, damp, noisy, dusty and then heat and curtain damage from the incoming UV rays to being comfortable and generally better health.
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Carolyn
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Ryan and his team have been awesome, I highly recommend Magnetite and their system to retrofit secondary glazing on older homes.
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Maree
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What You’ll Need to Apply

To qualify for a green home loan, banks typically require:

  • An active home loan with the bank (or approval to transfer your mortgage to them).
  • Sufficient equity in your property to meet standard lending criteria.
  • A formal quote covering the supply and professional installation of your Magnetite system.
  • Project documentation, including a proposed installation timeline and any extra details requested by your bank.
  • Prior approval, before paying for or commencing any installation work.

Request a Free Quote →

Green loan frequently asked questions

A green loan is finance intended for eligible upgrades that improve a home’s energy efficiency or environmental performance. In New Zealand, these are commonly structured as special-rate home loan top-ups for existing mortgage customers.

Yes. Many New Zealand banks currently list double glazing as an eligible upgrade. Approval depends on the lender and your circumstances.

Magnetite provides professionally supplied and installed retrofit double glazing and secondary glazing, and both double glazing and secondary glazing are listed by ANZ, ASB and BNZ among eligible window upgrades. Your bank must confirm that your specific project and application qualify.

No. Magnetite fits retrofit double glazing or secondary glazing to your existing windows or doors. This can improve insulation and comfort without removing the original window system.

That depends on your existing mortgage, equity, borrowing needs and repayment plans. Compare the interest rate, loan limit, fixed period, fees and the rate that may apply after the special term.

The remaining balance may move to the bank’s applicable standard or floating home loan rate, or you may be able to refix it. Check the current product terms with your bank.

Usually, yes. Banks commonly ask for a valid quote from a professional supplier and installer, and some also ask for an installation date.

No. Magnetite does not provide credit or financial advice. We provide the glazing assessment, written quote and installation information. You apply directly through your bank.

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