In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
In at least alf of the gas units I service the draft is always higher than it should be, this obviously cuts down on the efficiency. Is there a quick fix to this? If it was oil, you could adjust the baraometric damper to lower the draft, can you do this with gas? The only time I've seen barometric dampers on 80% induced draft furnaces is when they have a side vent kit connected to it.
How about with 90 plus units? If you follow the manufacturers combustion piping directions, and the draft is to high, how do you lower it?
excessive draft is ok when it comes to safety because you know the stuff is going out, but it effects the efficiency because those gases are flying through the heat exchanger and all of the heat isn't being extracted.
I know some will say the flue piping is probably wrong, and they are probably right, but what if the flue piping checks out, then what?