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

If your gas furnace keeps cycling on and then turning off within a minute or so, it might be the result of a dirty flame sensor. Most gas furnaces have a small sensor designed to shut off the furnace ...

The furnace is the hero of a house in winter. But there’s one tiny part inside it that most homeowners don’t even know exists, let alone realize they’re supposed to clean – the flame sensor. Left ...

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 ...