Indicative capacity estimate
Enter the building or room details to obtain an initial capacity range and suitable model groups.
Selected equipment
You can change quantities or remove a model here before submitting your enquiry.
How the estimate is calculated
The calculator uses an approximate heat demand per square metre assigned to the selected building condition, then adjusts it for ceiling height, number of floors and, for air-to-air, sun exposure. It gives a ±15 % range and selects products according to the capacity range listed in the catalogue. Hot water demand is shown as an additional specification requirement, rather than simply added to the building's design heating load.
Read more: how the required heating capacity is calculated and how ventilation airflow is calculated.
Describe your property – we will suggest a suitable solution
Briefly describe what you need and choose one contact method for a reply. If photos or other technical information are needed later, we will agree how to provide them when we get in touch.
Underfloor heating pipe calculator
An indicative estimate of pipe length and number of circuits for one room. State the one-way distance to the manifold; supply and return runs are included for each circuit.