Weather King furnace problem? We are getting some waterproofing work done in our vault. We noticed...

We are getting some waterproofing work done in our vault. We noticed this morning that it is colder than usual. We realize that the heating system kick on, but no hot air comes out, making our house around 55 degree. It is a Weather King Furnace and it is the weekend so we are having trouble getting a hold of anyone to assist. We figure something get disconnected or turned off while the men be working downstairs, but we don't know what. Does any one know anything that can save us from the cold?!?!?
Why are adjectives the water-meter boxes within Atlanta...
Answers:    You do not utter but I am assuming it is a gas unit. It sounds close to the blower is not coming on. For more info including a troubleshooting guide, check out the furnace page at my source.
Changing an outlet, requirement minister to?
Is the burner coming on? Make sure the doors on your furnace are on right. Make sure your flue is not obstructed.