Bob is a service technician who is well trained and nationally certified. However, he sometimes suffers from the same confusion that all technicians occasionally do - the facts that he gathers may or ...

Most noncondensing residential furnaces use natural draft to drive the combustion process. Even 80%-AFUE furnaces with combustion blowers are natural-draft furnaces. The combustion blower in an 80% ...

Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook While energy costs continue to soar domestically and abroad, mechanical engineering Prof. Arvind ...

If you trace this duct down, you'll find that it connects to an opening at the exterior of the building. This is essentially just a hole in the side of the building that brings in fresh outdoor air.

Check thermostat settings, filters, and fuel supply first when your furnace blows cold air. Call an HVAC technician for issues like sensor failures, clogged burners, or duct leaks. Skipping routine ...

Zonal combustion monitoring systems provide a way to improve burner fuel and/or airflow control. Such systems combine online combustibles (COeq) and excess oxygen (O 2) sensors with information about ...