Criteria need to be checked for the whole building.
Criteria and method
Passive House reference values include heating demand up to 15 kWh/(m²a) or an applicable load criterion, and airtightness n50 ≤ 0.6 h⁻¹. Check the complete requirements, reference area and criteria version with PHI.
PHPP, PER and certification
PHPP supports energy-balance planning. Classic, Plus and Premium differ through renewable primary energy (PER) and generation criteria. EnerPHit addresses retrofit; PHI Low Energy Building is a separate standard. Certification is independent verification, not a project label.
Ukrainian requirements
Voluntary PHI criteria do not replace applicable Ukrainian building requirements. ZeroHouse makes no unverified company or professional certification claims.
Passive measures work together: lower transmission through assemblies, continuous junctions and controlled air exchange limit losses, while orientation and glazing influence gains. Climate and geometry affect the result. Equal insulation thickness in different houses does not imply equal heating demand. Energy efficiency also differs from the ability to operate independently of utilities.
Comfort includes summer
In winter, internal surface temperatures and unwanted air movement matter. In summer, assess excess solar gains, ventilation opportunities and any cooling requirement. Ventilation provides air exchange but is not a universal air-conditioning system. The name of an approach does not remove the need to examine room conditions, occupancy and controls in the particular building.
Check the meaning of a building claim
Ask whether the statement concerns an intention, modelled compliance or an issued certificate. The last requires an issuer, document and scope; a component list does not establish it. PHI's official page describes the process and supplies criteria, while national requirements are checked separately. Define the intended outcome and verification route before detailed design. This avoids treating a design ambition as a completed assessment or assuming that one favourable measurement confirms the entire standard.
