ᐅ How to Calculate Heated Building Volume?

I have the usable floor area from the energy performance certificate, which is 277 square meters. Is the heated building volume then roughly three times that? So approximately 831 cubic meters?

This is not about a 100% precise calculation, just an estimate.

Why not use the 277 m² (2984 ft²) multiplied by the clear ceiling height? If there are multiple floors, and one of them has sloped ceilings, then take an average value?

lesmue79 schrieb:

Why don’t you multiply the 277 m² (2,983 sq ft) by the clear room height? If there are multiple floors and one of them has sloped ceilings, then take an average height?

Is that how it’s calculated? I’m not sure, just a question. So would I then need to do, for example:

Ground floor clear room height: 2.5 m (8 ft 2 in), so 277 * 2.5, and then the upper floor: 277 * 2? Or what is the best way to calculate it?

bestens schrieb:

Is it calculated like this? I’m not sure, just a question. So, for example, would it be:

Ground floor clear ceiling height: 2.5m (8.2 ft), so 277 * 2.5, and then the upper floor: 277 * 2? Or what is the best way to calculate this?

Wait a moment... Can’t I just use the calculation for the “renovated space” and then subtract all unheated rooms, including only the heated rooms?

Maybe you could explain exactly what you are planning? Are you trying to estimate the heating load, or what is the goal of all this?

lesmue79 schrieb:

Maybe you could explain exactly what you want to do? Do you want to estimate a heating load, or what is the goal?

Yes, exactly, to calculate the heating load for the Ubakus heat demand calculator, so I have an approximate idea of what the heating load would be.