Cortizo Windows is a specialist network for aluminium and PVC windows for homes, with professional advice, an energy-saving calculator, quote request forms and a store locator.

Cortizo Windows

Windows for energy savings

Energy saving means reducing winter losses, limiting unwanted summer gains and improving airtightness without neglecting ventilation.

PVC: internal chambers and frame depth

PVC windows also differ from one system to another. As a general rule, a PVC window can improve its thermal performance when it has more internal chambers and greater frame depth, provided the glass, gaskets, profile design and installation also support the system.

  • More internal chambers can help reduce thermal transmission through the profile.
  • Greater frame depth usually allows more complete systems and better insulation.
  • The real comparison should be between complete systems, not material alone.

Windows for energy savings: checklist before deciding

Energy saving means reducing winter losses, limiting unwanted summer gains and improving airtightness without neglecting ventilation.

Efficiency is a whole-window issue

Profile, glass, seals, opening system, shutter box, orientation and installation all affect performance.

Balance winter and summer

Cold climates and sunny façades need different priorities. The same glass is not always ideal for every room.

Shutters and solar protection

A well-treated shutter box avoids losses, and exterior protection helps reduce overheating.

Compare quotes with technical detail

Ask for complete specifications so that price comparisons include the real performance of the solution.

Checklist before deciding

  • Ask for complete-window performance.
  • Separate winter and summer needs.
  • Review shutter box and solar protection.
  • Consider orientation and opening size.

Mistakes to avoid

  • Looking only at initial price.
  • Using the same glass for all orientations.
  • Comparing quotes without installation scope.
  • Forgetting that ventilation is still needed.

What to include in the quote

To compare options properly, ask the quote to separate profile system, glass build-up, opening type, shutter or box, removal of old windows, perimeter sealing, finishes and installation schedule.

FAQ

Which window saves energy?

A complete solution with suitable profile, glass, seals, shutter treatment and installation.

Do all rooms need the same solution?

No, orientation and use can justify different specifications.

What data should I compare?

Whole-window performance, glass, profile, opening and installation details.

When should I request a quote?

When replacing old windows or planning an energy-efficiency renovation.