Use the calculation tool to find out how much you can save  
     
  No two rooms are the same. The same therefore applies to possible savings*. Use the calculation tools below to see how much you could save in your specific situation.  
     
 

Go to the calculation tool for houses

Go to the calculation tool for buildings

 

 

* The results shown are based on TNO calculations. Actual losses will depend greatly on the measures users take to prevent the discomfort caused by cold spots resulting from air locks.

 

 
Cases