I recently changed companies that provide and service the boiler in our home. The company that I used to use has a B+ rating and is not accredited by BBB. The company that I changed to has an A+ rating and is accredited. Based on my limited experience with the new company, I do have to agree that Matt has a point that I would assess the two companies exactly the same as BBB. Perhaps I'll start looking at BBB info in the future.