lower consumption
Compared with conventional existing buildings, depending on use and climate.
Passive House
Exceptional comfort.
Very little energy.
A Passive House is not a style of architecture. It is a rigorous, measurable building standard that delivers stable temperatures, fresh air and radically lower energy demand.
See how it works →
The result
A building designed around people, not the heating system.
fresh filtered air
Controlled ventilation removes stale air without wasting indoor heat.
year-round comfort
Warm internal surfaces and excellent solar control support stable comfort.
Five principles
Performance comes from the complete system.
High-performance insulation
A continuous thermal envelope limits heat loss in winter and overheating in summer.
Thermal-bridge-free design
Every junction is calculated and detailed to prevent weak points, condensation and mould.
Airtight construction
A continuous airtight layer is verified on site with a Blower Door test.
High-performance windows
Correct glazing, frames, orientation and installation protect comfort at the edge of the envelope.
Heat-recovery ventilation
Filtered fresh air is supplied continuously while valuable heat is recovered from exhaust air.
Built for Florina
PH X-1 proves it in one of Greece's coldest climates.
Designed, constructed and monitored by XK Passive House, PH X-1 achieved Passive House Classic certification and a final measured airtightness of n50 = 0.39 1/h.
View the certified project →Our process
From the first calculation to final verification.
- 01Concept & modellingClimate, orientation, geometry and energy balance.
- 02Technical detailingEnvelope, thermal bridges, windows and ventilation.
- 03Site supervisionCritical details are checked as construction progresses.
- 04Testing & certificationAirtightness is measured and the final documentation completed.
Contact
Planning a project that deserves to perform better?
Business details
- Company
- XK Passive House & Engineers Team E.E.
- Address
- 6 Aristotelous & Kioutachias, Florina, Greece
- Hours
- Monday–Friday 09:00–13:00
Until 20:00 by appointment - Principal engineer
- Konstantinos Chatzopoulos
Civil Engineer