Window & Door Calculator
Design your window in 3D — pick size, profile and glazing and see an honest market price in minutes. Then let verified installers quote your exact project.
Free tools for your window project
Everything you need to plan a window or door project in Spain — price it, find the grants that pay for it, and see what your region requires. No account, no sales call, no obligation.
Subsidy & Deduction Calculator
See what new windows will really cost after stacking the regional grant and the IRPF tax deduction — by province and property type.
Savings & Cost Map
Pick your province to see the U-value the building code demands and an illustrative installed cost for a code-compliant window.
EU Energy Rules 2030
What the new EU energy law (EPBD) actually requires of Spanish homes — the dates that matter and the myths it does not. Data you can cite.
Ready to see your price?
Design your windows in the calculator and get quotes from verified installers in your province — free and with no obligation.