It is a TDR (Temperature Difference Ratio) calculator that is used as a criterion for judging condensation defects on windows, doors, and walls of multi-family apartments.
Accurate results are calculated through measurement or simulation by an accredited evaluation agency, and project entities are required to submit the performance evaluation results for condensation prevention in apartment houses when reporting the start of construction.

The appropriate indoor humidity is 40 ~ 60%, and if condensation occurs under this condition, the surface temperature can be measured to predict the abnormality.

If you enter the indoor and outdoor temperatures, it displays the standard for judging condensation below the surface temperature of windows and doors.

If someone applies for AS due to window condensation in a newly built apartment, 100 is 100, no matter what measurement equipment or repair tools are brought, they just come alone, repeating like a parrot that they are not at fault and the window condensation is the tenant's fault. .

For example, it is the same as condensation in a car. If you take a drink out of the refrigerator, water droplets do not form. It is because it is near a river, so it is very humid. The living environment is all different, so how can it not occur? no etc...

Although windows cannot completely block the outside temperature, there are standards that must be satisfied that are applied to multi-unit dwellings. For more information, please refer to related laws or expert advice, and hope that the standard value according to the indoor and outdoor temperature difference will help predict defects.