With bitter cold temperatures in Chicago down in the single digits, some homes and businesses didn't have working heat.

Abstract: The detection of the flame combustion status of a heating furnace is an important link in determining its working status and ensuring the safety of petrochemical production. To improve the ...

The last thing anyone needs is for their furnace to start blowing cold air — especially in the winter. But what causes this ...

If your furnace is giving off cold vibes, even when you turn the heat up, it's a sign that there's a problem. It may be an ...