As temperatures drop, your furnace becomes the unsung hero keeping your home warm and comfortable. But like any hardworking appliance, it can run into trouble, especially after months of sitting idle.

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

Experts recommend turning on your furnace before freezing temperatures arrive to check for issues and help prevent major problems during winter. Signs your furnace may need replacement include being ...