Can you mount the boiler in one of the offices? that way any "lost" heat from the boiler casing is "lost" into the place you're trying to heat rather than into the warehouse.
At our first house I moved the boiler from the house to the garage to free up the space in the house, because the boiler had to constantly fight against the cold of the garage it burnt more gas, also the house was slower to heat up.
Also why not lag all the pipes, it'll help the heat get to the far end.
At our first house I moved the boiler from the house to the garage to free up the space in the house, because the boiler had to constantly fight against the cold of the garage it burnt more gas, also the house was slower to heat up.
Also why not lag all the pipes, it'll help the heat get to the far end.