Air Conditioning - Looking to replace Furnace with Central Air / Furnace

I'm looking to replace a 30+ year old GE Furnace. I've had a one contractor out so for for Trane. He Quoted 2900 to install an XT80 Funace and 2700 to install an XB13 Central Air with Coil. It's a 1200 Sq Ft Single Story Ranch, and I plan to be there for 5 years or so.. My heating costs were about $900 this winter.

Would you recomend a trane for this, or is there another brand I should be looking for as well as is the efficiency ok?

If you will only be there for 5 years Id go for what the bid is It sounds good. But as we say get 3 bids for any job. You dont say if you need more heat or more cool .So if its the heat could look at a 90% furnace and for cool a seer of 15 AC.

I still have 2 more contractors coming next week. one more Trane, and a Lennox

I suggest getting far more than just three bids. Try to get several bids for the exact same equipment. There are subtle (and sometimes not so subtle) differences between brands and this makes comparisons among different bids of different equipment difficult.

Ed is right about asking what is more important, heating or cooling because using the same ductwork for both is always a compromise. You need to design for the more important function. In my area (just outside of Seattle) heating is "usually" the more important function but with mild winters 90+% furnaces are rarely installed as the "break even" point is usually geater than ten years.

Thanks for the responses

The ducting is already inplace as I have forced hot air, and will not be changing that. The ducting has a return in each room (2 in the living room), and an outlet in each room (2 in the living room). It is good for the heating, so I hope it should be ok for the cooling. (it is a relatively small house)