We want to replace the boiler in our basement and have been given conflicting advice about what to get. We have an old house, built 1903, and have hot water radiators. We have already done extensive renovations and our contractor told us we should get a high efficiency combi gas boiler for both heating and hot water.
However, another plumber told us that we should stick with a standard boiler and hot water tank like we have now because the new boilers don't work well with old houses and apparently silt can get stuck in the pipes. Our contractor's plumber said thats not true and we can just put on a filter.
Also, we had also wanted to relocate the new boiler to the side of the basement rather than the center where it is now. The "other" plumber said that the boiler should remain central so the water can be evenly distributed through the pipes. Contractors plumber says thats nonsense because there are pumps.