In January I decided to take my draft inducer off and see how my boiler would run. My normal chimney draft with this boiler is around .03 wc. I ran this way for two months before I put the inducer back on. Now it is running at the suggested .06 wc. Wow, what a difference. The boiler gets up to temp much quicker and more importantly the chimney goes NVS (no visible smoke) much, much quicker. I would dare say with out the inducer, the boiler was probably not reaching gassification mode very often. So for those of you that have not got a manometer and tested your draft, you may want to do so. You might be surprised how much better your boiler will perform with the suggested draft for your particular unit...