This is the combustion air duct I showed at the beginning of this post. When a combustion air duct is properly installed, it will help prevent the house from getting depressurized.

If air is exhausted through a combustion air duct, we should question where the air to replace it is coming from. The source can easily be from a flue pipe. Now, let’s consider the impacts of air ...

Combustion flue gas analysis has been used to optimize the boiler air/fuel ratio for decades. Measuring the amount of excess oxygen and/or carbon monoxide in combustion flue gases gives an ...

Sometimes this is referred to as a “fuel-rich” combustion because there is too much fuel for the amount of oxygen present. While replacement of the unit or a thorough cleaning can be an immediate fix, ...

With all the recent emphasis on electric vehicles, we often overlook the technology that still powers most cars on the road today.The internal combustion engine (ICE) has been at the heart of the auto ...

Cold Air Intakes (CAIs) are among the most popular modifications enthusiasts make to their cars. Of course, like anything popular, there’s a fair bit of discourse surrounding them. Claims range from ...

Section 7411 of the Clean Air Act addresses New Source Performance Standards (“NSPS”). These are applicable to new, modified, or reconstructed stationary sources for which EPA has promulgated ...

Section 7411 of the Clean Air Act addresses New Source Performance Standards (“NSPS”). ... Issue a final revision of the NSPS for new combustion turbines by December 15, 2023, ...