Don't go with some generic cheap furnace, you will pay for it years down the road. Also do not use Angie's list or any other referral websites-they are a joke. First thing to do is find your current BTU on your current unit and evaluate if it is sufficient for your square feet that you are trying to heat. Measure the unit and evaluate the space available for the new unit. Then I recommend only two vendors-Trane and Carrier. Nothing runs like a Trane is their moto and trust me it is true. I would start by calling the Trane wholesale distributor in your area and ask the salesman who is a really good HVAC guy(one of their regular customers) that would do good work for a decent price. Get three phone numbers and call them all. Tell them your current model, BTU's and Sq. Ft. of home to determine proper unit. Choose the vendor that is competitive with price but also may be able to deal in dead presidents. I purchase my own units wholesale and then pay cash for installation-saving thousands of dollars.

By the way if your unit got tagged there is a reason and it is not safe for your family. Often times there can be hairline cracks in the heat exchanger that can cause carbon monoxide leaks and can potentially become a huge health concern. Just FYI