How much does it cost to replace windows in 2026

Yes, in the per-type and per-project figures above: manufacturing, transport, installation, perimeter sealing and hardware adjustment. Removal of the old frame varies by installer. It may be included or charged separately (€20-50 per window). Always confirm this in your quote.

Yes. Anthracite or wood-effect finishes typically cost 15-30% more than white, because the profile is laminated with an extra film. Manufacturing also takes longer: 6-8 weeks, versus 3-4 weeks for white.

There’s a 6% rate (verba 2.27 of List I of the Portuguese VAT Code) for renovation, refurbishment or repair works on housing, as long as the materials supplied by the contractor don’t exceed 20% of the total contract value, above that threshold, only the materials portion pays 23%, while labour stays at 6%. There’s no explicit legal requirement that the “home must be more than 2 years old”; that’s a common simplification that doesn’t actually appear in the law. A new 2026 law (Lei 9-A/2026) creates a separate 6% rate, but it applies to new construction or refurbishment for sale or rent at moderate prices. It doesn’t apply to a homeowner replacing the windows in their own house.

Yes, for a comparable window with a thermal break (the correct option for a home). The gap varies a lot depending on the system: entry-level runs about 30-40% above PVC, but premium systems with very slim profiles can cost 2-3 times more. It’s worth it for large openings, sliding doors, or exposure to the sea, see the full comparison before deciding.

Mainly the number of internal chambers in the profile and the overall thickness. A 70 mm system with 5 chambers (the most common on renovation projects) has a Uf (the frame’s own insulation) around 1.30 W/m²K. A premium 82-86 mm system with 6-7 chambers can bring the complete window’s Uw down to 0.66-0.73 W/m²K, almost half the heat loss. The difference is most noticeable on façades heavily exposed to cold or wind, rather than in a well-sheltered room.

Yes, for a full apartment project it’s common and usually pays off. For a project of around €3,000, the estimated instalment is around €96-98/month over 36 months, or €63-65/month over 60 months. This calculation uses the rates published by Cofidis (TAN 9.90%) and Cetelem (TAN 10.90%). It isn’t an official example from either bank, so the final simulation with the lender may vary. Always compare the APR (which includes fees) with the total cost of credit before deciding.

Occasional promotions do exist, but they rarely make up for putting off a cold home for another winter, the cost of the energy lost in the meantime (see the section above) is already a real loss on its own. If budget is tight, financing (see the previous question) usually works out cheaper overall than waiting a year with old windows.

Line up all three in a simple table: same glass type (Low-E + argon, at minimum), same colour, labour vs materials broken down separately, manufacturing lead time in writing, and a minimum material warranty (never less than 3 years). A quote without that breakdown, just a final number, makes it hard to see where you’re saving or overpaying.

There is currently no direct, general support programme specifically for replacing windows in a primary residence. There have been occasional, broader-scope energy-efficiency grants in the past (not specific to windows); always check the Fundo Ambiental website for an active scheme before counting on that figure in your budget. We don’t include hypothetical grants in our estimates.