====== Windows ======
Windows are an essential factor in assuring pleasant indoor conditions. In cold climates, poorly insulated windows will cause relatively cold surfaces at the facade and will require active heating near the windows to compensate for cold air drops, draughts and “cold radiation” caused by the cold surfaces. Highly insulated windows, on the other hand, will make an active contribution to increasing the level of comfort. High performance windows, specifically developed to meet the requirements of Passive Houses, are offered by an increasing number of manufactureres across the globe. A list of PHI Certified Passive House windows can be found [[http://www.passiv.de/komponentendatenbank/en-EN|here]].\\

{{ :picopen:001_headfoto_smartwin_eesti_guldars_house.jpg?400|}}
[[planning:thermal_protection:windows:requirements_for_windows|]]\\
[[.:windows:types_of_glazing_and_their_specific_values|]] \\
[[planning:thermal_protection:windows:requirements_for_windows:required_u-values_for_passive_house_windows]]\\
[[basics:passive_houses_in_different_climates:study_passive_houses_for_different_climate_zones:adapted_window_qualities]]\\


===== Thermal protection & Thermal bridge ===== 


[[:basics:building_physics_-_basics:thermal_bridges:tbcalculation:thermal_bridges_of_transparent_components|]]\\
[[:planning:thermal_protection:windows:window_installation]]\\
[[:planning:refurbishment_with_passive_house_components:prospects_for_the_modernisation_of_existing_buildings_using_highly_efficient_components:structural_thermal_protection_measures]]\\

Tool: [[:basics:building_physics_-_basics:thermal_bridges:window_installation_thermal_bridges_catalogue]]\\
Fact sheet: [[phi_publications:2023_vo4_comfort_criteria_phpp]]\\
Fact sheet:{{:phi_publications:microsoft_word_-_08_thermal_insulation_step_by_step_retrofit_kk.pdf|Windows in step-by-step modernisations – First the thermal insulation, then the windows }}\\

===== Window certification ===== 
[{{ :picopen:passive_house_window_u.png?300|**Passive House windows allow for major energy savings and offer a superior level of comfort.**}}]
[[:certification:passive_house_suitable_components]] \\
[[.:windows:window_certification:start|]] {{:picopen:members_only.png?25}} \\
[[planning:thermal_protection:windows:window_certification:adapting_the_certification_criteria_and_glazing_for_european_climate_zones]]

Webinar: [[webinars:building_systems]] \\

===== Window installation ===== 

[[.:windows:window_installation|Window installation]] (read also in {{:picprivate:puente_termico_de_la_instalacion_ψinstal_.pdf|Spanish}}  ) {{:picopen:members_only.png?20}}\\
[[.:windows:windowinstallationcalculation|]] \\
[[:efficiency_now:building_envelope:glazing]] \\
[[:efficiency_now:building_envelope:insulation_of_window_frames]]\\

Fact sheet: {{:picopen:microsoft_word_-_01_fact-sheet_en_window-better-wall_kk.pdf|Is it problematic if the window is better than the wall }}\\
Fact sheet: [[:phi_publications:2025_vo1_extending_wall_insulation_over_window_frame]] \\
Webinar: [[webinars:do-it-yourself_energy_efficiency]]\\




===== Windows in refurbishment===== 

[[:planning:thermal_protection:windows:replacement of window]] \\
[[..:refurbishment_with_passive_house_components:thermal_envelope:windows|Windows in refurbishments]] \\
[[..:refurbishment_with_passive_house_components:windows_in_a_step-by-step_retrofit|]]\\
Fact sheet: {{:picopen:microsoft_word_-_07_window_step_by_step_retrofit_kk.pdf|Windows in step-by-step retrofits - windows first, then insulation }}\\




===== Window ventilation & shading  =====

[[:efficiency_now:building_envelope:insulating_a_roller-shutter_box]]\\
[[.:windows:optimization_of_roller_shutters_and_exterior_blinds|]] {{:picopen:members_only.png?25}}\\
[[:planning:refurbishment_with_passive_house_components:prospects_for_the_modernisation_of_existing_buildings_using_highly_efficient_components:home_ventilation]]\\
[[..:building_services:ventilation:passive_house_-_6_reasons_why_you_still_need_windows|]]\\


===== Tool  =====

[[:planning:window_tool]] \\
[[:planning:hygiene_tool]] \\
[[:planning:tools:reductionfactor_shading]] \\

----

===== See also =====
[[:basics:passive_houses_in_different_climates:passive_houses_in_cold_climates:yekaterinburg:reference_ph:parameter_variations]]\\
[[:basics:passive_houses_in_different_climates]]\\
[[.:windows:passive_house_windows_completely_redesigned|The next generation of Passive House windows]]\\
[[:planning:thermal_protection:windows:passive_house_windows_completely_redesigned]]\\
[[:efficiency_now:building_envelope|]]\\