Mid-high range system with warm-temperate PassivHaus certification. 78mm, 6 chambers, Uw from 0.80 W/m²K. Made in Spain with premium-brand performance.
The Cortizo A 78 has pleasantly surprised us. With 78mm and 6 chambers, it achieves Uw of 0.80 W/m²K — comparable to the best 76mm systems from German brands. Plus it has a certified warm-temperate PassivHaus version.
What we like most is that it combines high-end performance with the advantages of a Spanish manufacturer: short delivery times, fast service and a significantly lower price than German competitors.
For new builds with demanding energy requirements but no need for cool-temperate PassivHaus certification, the A 78 is probably the best value-for-money option on the market.
Specifications per UNE-EN 12608-1. Source: official Cortizo data sheet.
| Geometry | |
| Frame depth | 78 mm |
| Number of chambers (frame) | 6 chambers |
| Outer wall thickness | ≥ 2.8 mm (Class A) |
| Maximum glazing thickness | 48 mm |
| Glazing rebate depth | 22 mm |
| Thermal | |
| Profile thermal transmittance (Uf) | 1,1 W/m²K |
| Window thermal transmittance (Uw) typical | 0,9–1,2 W/m²K |
| Uw with double LE + Ar (4/16/4) | aprox. 0,80 W/m²K (0,74 PassivHaus) |
| Compatible glazing | Double or triple up to 48 mm |
| PassivHaus certification | Warm-temperate (Iberian Peninsula) |
| Acoustic | |
| Sound reduction (Rw) | up to 47 dB (depending on glass) |
| Airtightness | |
| Air permeability (A) | Class 4 (maximum) |
| Watertightness (E) | E1200 |
| Wind resistance (V) | C5 |
| Construction | |
| Weatherseal | Enhanced double EPDM gasket |
| Steel reinforcement | Closed galvanised steel |
| PVC profile class | Class A — EN 12608-1 |
| UV stabiliser | TiO₂ — yellowing protection |
| Certified lifespan | > 40 years |
| Security | |
| Burglar resistance | up to RC2 (with suitable hardware) |
| Standards | |
| Manufacturing standard | UNE-EN 12608-1 Clase A |
| CTE DB-HE compliance | All Spanish climate zones |
| Certificación PassivHaus | Warm-temperate (Iberian Peninsula) |
| AEV classification | A4 · E1200 · V·C5 |
Uw values depend on glass type and thickness. Data based on official Cortizo 2026 data sheet.
Guide prices without installation. For installation price, contact us. Standard size, white, double low-E glass. VAT not included.
| Type | From | To |
|---|---|---|
| Practicable 1 hoja (60–90cm) | 310€ | 420€ |
| Practicable 2 hojas (100–200cm) | 420€ | 560€ |
| Oscilobatiente 1 hoja | 340€ | 450€ |
| Balconera practicable 90×210cm | 460€ | 620€ |
| Corredera 2 hojas | 480€ | 650€ |
Yes. The Cortizo A 78 is an excellent mid-high range system. With 78mm and 6 chambers it achieves Uw of 0.80 W/m²K — comparable to the best German brand systems. It also has a certified PassivHaus version.
The guide price starts at €310 for a 1-sash casement. A 2-sash window costs around €420-560. Significantly cheaper than German PassivHaus systems.
The A 84 PassivHaus HI is the top system: 84mm, Uw from 0.66 W/m²K, cool-temperate certified. The A 78 offers an excellent balance between performance and price.
Yes. The A 78 has a warm-temperate PassivHaus version, ideal for the Iberian Peninsula. With triple glazing it achieves Uw of 0.74 W/m²K.
The Cortizo A 78 has more depth (78 vs 76mm), more chambers (6 vs 5) and better Uw (0.80 vs 1.0). Cortizo offers faster delivery and 10-15% lower prices. Kömmerling's Full Cover finish is unmatched.
| Series | Depth | Chambers | Gasket | Min. Uw | Approx. price |
|---|---|---|---|---|---|
| A 70 | 70 mm | 5 | Double | 0,9 | 260\u20AC |
| A 78 \u2190 you are here | 78 mm | 6 | Enhanced double | 0,80 | 310\u20AC |
| A 84 PassivHaus | 84 mm | 6 | Triple | 0,66 | 420\u20AC |
We are Cortizo PVC installers with over 15 years of experience. Free quote with technical survey included.