MVHR & Ventilation System Calculator
Estimate room-by-room airflow and find a suitably sized heat recovery unit for your home in minutes.
Quick and simple
Answer a few simple questions and see the result right away.
Choose calmly and with confidence
Quick and simple
Answer a few simple questions and see the result right away.
No guesswork
From your rooms we estimate the airflows needed and the unit's operating point.
A clear first recommendation
We pick units of the right capacity and show clearly what is still worth checking.
Completely free
Get personal ventilation guidelines right away, with no obligation.
Project
Rooms
Enter the shared area and select “Living room with kitchen”. We create two zones: 80% living, 20% kitchen. You can edit both areas.
Start from a layout
Pick a typical room layout and tweak it, or add rooms one at a time.
| Room | Area | Floor | People in room | Airflow | Direction |
|---|
Where shall we start?
Pick a ready-made room layout or start from scratch.
Frequently asked questions
Common questions on how to choose a heat recovery unit and calculate your ventilation system requirements.
Recommendation and planning guidance. This is not a final ventilation design.