sentence: The structure is pretty much the same as the pellet stove . The difference is that , instead of a fan , here we have a pump due to the fact that the goal of the boiler is to warm up water and send it to the heaters all over the house , so it needs a pump to do that instead of just a fan ( the purpose of a fan and a pump is the same : move fluid from a point A to a point B , but in one case , you have to move air and in the second case , water ( they have a different density : water has 1000 times the density of air ) .
modified: The structure is pretty much the same as the pellet stove , the difference is that instead of a fan here we have a pump due to the fact that the goal of the boiler is to warm up water and send it to the heaters all over the house , so it 's nedded a pump to do that instead of just a fan ( the pourpose of a fan and a pump it 's the same : move fluid from a point A to a pont B , but in one case you have to move air and in the second case water ( they have a different density : water has 1000 times the density of air ) .
transformation: PUNCT, PUNCT, PUNCT, VERB, SPELL, OTHER, SPELL, PUNCT, PUNCT