About my furnace? I have terribly huge not finished basment and one of my...

I have terribly huge not finished basment and one of my family member decided to build a small room surrounded by the basment so he did the duct for the cool air and one for the hot nouns before he build the room and the basment as i said is not finished.I be suprise when my bill for the gaz was $ 200 I of late wanna know if the duct for the cold air be the problem or that duct has nought to do with the furnace at adjectives because the gaz prices are increasing and the weather is cold ?and I also wanna know how does the furnace work ?
My out-of-date Thermostat stopped working sometime. We...
Answers:    Heating the additional room prolly didn't affect your heat bill as much as the fuel cost increases...
Automatic garage door / doesn't ooen?
That one duct will not affect your bill too much. For more information, check out the furnace page at my source.