Use the room’s heating requirement and the exact panel ratings to select capacity.
For primary room heating, size the panels against a room heat-loss calculation at the project’s design conditions. Floor area alone does not account for insulation, glazing, air leakage, ceiling height or climate. A room name such as bathroom or basement is not enough to assign a dependable watts-per-square-foot value.
- Establish whether the panel is intended for local comfort or to heat the whole room.
- For whole-room heating, obtain the room’s design heat loss using the project’s heating calculation. ACCA Manual J is a residential load-calculation reference.
- Compare that load with the rated capacity of the exact panel model or planned group of panels. Use consistent units and the manufacturer’s product ratings.
- Check placement as well as capacity. Panels need the specified clearances and an unobstructed path into the occupied space; furniture can shield people from radiant heat.
The Ember manual allows supplementary or primary use, but does not guarantee a particular room temperature or warm-up time because building and environmental conditions vary. A fixed room-coverage table or a universal 25% allowance for every additional two feet of ceiling height should not replace the project calculation.
Sources: ACCA Manual J overview, Ember manual (Applications, Positioning and Warranty), and LAVA manual (Technical Data and Troubleshooting).
