No. Not really.
Look again at your code:
here you are mapping all points bounded from nearest to farthest.
Nearest to your 2 points = blue
Farthest to your 2 points = red (the top right corner)
All the in between point will have a gradient…
Why should temperature rise if you are far from the sampled points???
Why not colder?
That’s a wrong logic.
Use Mesh Spray component.
But to be able to see any decent results you will need more than 2 points and with different colors
Even better.
Evaluating mesh vertex distance from sampled points or using Mesh Spray, both will consider linear distance, even by “passing through walls”, which is probably wrong, i guess.
Heat should only travel through the actual geometry you have, right?
See Heat Method