======Thermal envelope tools======

^Tools^Description^
|**[[Temperature reduction factors for unheated or partially heated extensions]]**|Calculation tool for temperature reduction factors to temperature zone "X" in the PHPP "Areas" worksheet.|



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Related articles:

  * [[planning:calculating_energy_efficiency:phpp_-_the_passive_house_planning_package:calculation_guide_for_temperature_reduction_factors]] 
  * [[basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples:unheatedb]]



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