[Guest]

I need to replace 2 1970's era gas fired furnaces with a new high efficiency furnace. One is 80,000 btu and the other is 100,000 btu. The building is 4000 sf single story. Can anyone give me a ballpark of how much I can expect to pay? I would like to keep the building under positive pressure. Right now, the building is pulling in odors from a nearby gas station.

 

[HVAC Doc]

Well if you want to keep under positive pressure, go with a 90%+ 2 pipe furnace where you draw outdoor air in for combustion rather than air in the home. As for price.....alot of factors to consider but a good "ballpark" would be about $4500 for a straight 90% non variable speed non 2 stage furnace.

 

[Richard Johnson]

Another factor would be your location. Costs to replace a furnace vary depending on area of the country.