How much do aluminium replacement windows cost?

We're getting quotes to swap our tired uPVC for aluminium and the prices are all over the place. What's a realistic cost per window for a decent brand?

Asked by Greg on 26th Sep 2026
Expert Trade Answers
"This all depends on the size of the window and how many openers you have . I would of thought that Ali over upvc would cost another 200 to 300 on top of the upvc price"
Answered on 27th Sep 2026 - Member since Oct 2025 - report
"Depends on design and size.
Only can be estimated once have drawing"
Answered on 22nd Oct 2026 - Member since Aug 2026 - report
"For a decent window roughly £800 t0 £1000 aluminium around £1000 to 1400 all depending on size and how many openers if I had sizes I could be more accurate"
Answered on 26th Oct 2026 - Member since Oct 2026 - report
"Hi Gregg
You can be looking at £700 per window up wards from there, lot more than pvc
We do install a few Aluminium windows and im shocked at the price of them

Kind Regards
David"
Answered on 27th Sep 2026 - Member since Apr 2026 - report
"An average cost on a smarts, system is around £600 per window"
Answered on 15th Oct 2026 - Member since Jan 2026 - report
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