Double Glazing Cost Calculator 🧮
Quick Answer: Double Glazing Costs in NZ
Double glazing typically costs $500-$2,000 per window in New Zealand. For an average 3-bedroom home (12-15 windows), expect to pay $8,000-$25,000 total, depending on retrofit vs new installation and frame materials.
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Get Free QuotesRetrofit vs New Installation Costs
Retrofit Double Glazing
Uses existing frames, adds secondary glazing
$500 - $1,200 per window
Complete Replacement
New frames and double glazed units
$800 - $2,000 per window
What Affects Your Costs?
- • Window Size: Larger windows cost more per m²
- • Frame Material: Timber > Aluminium > uPVC
- • Glass Type: Low-E and acoustic glass cost more
- • Location: Auckland/Wellington typically 10-20% higher
- • Access: Ground floor vs upper levels
Frequently Asked Questions
How accurate is this cost calculator?
Our calculator provides estimates based on average NZ market prices. Actual costs can vary by ±20% depending on your specific requirements, site conditions, and chosen supplier. For precise pricing, we recommend getting quotes from multiple local installers.
Is retrofit double glazing cheaper than new windows?
Yes, retrofit double glazing typically costs 30-50% less than complete window replacement. It uses your existing frames and adds a secondary glazing system, making it ideal for older homes or those on a budget.
What's the most cost-effective double glazing option?
uPVC retrofit double glazing with standard glass offers the best value for most homes. It provides excellent insulation and noise reduction at the lowest cost per window.
How much will double glazing save on my power bills?
Double glazing typically reduces heating and cooling costs by 15-25% in NZ homes. For an average household spending $2,000/year on energy, this equals $300-500 annual savings.
Can I get a payment plan for double glazing?
Many suppliers offer financing options including interest-free terms (12-24 months) and longer payment plans. Some qualify for government grants or low-interest loans for energy efficiency improvements.
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