Thanks to everyone who helped me yesterday with my Tempstar furnaces.
House Built in 1991.
* 1st Floor + Basement: 1991 TEMPSTAR Gas Furnace 120K BTU
* 2nd Floor: 1991 TEMPSTAR Gas Furnace 100K BTU
Furnace NUGI100DH03, Serial L904166400
The Questions are (I could not get this from Tempstar website http://www.tempstar.com)
1. Heat Exchanger Warrnaty: is it 10 yr or 20 yr wanrraty?
2. Efficiency of this furnace (with nat. gas price going up I am worried), is it 70%, 75% or 80%?
Does anyone know? TIA.