Recently I had a HVAC person check my furnace and as always they suggest getting a new one in a few years. When he had explained how the new furnace would be better, the main difference he had pointed out was that the new furnace would have a bigger air inlet. I was wondering if it would be wise or unwise to drill a few holes in the furnace cover to increase the air fow to the burners (of course with the furnace turn off and the cover removed). Would this make the mix air rich and cause incomplete combustion creating CO2 gases or would it burn better creating less emissions and save money.
Thanks for any suggestions.
Carl