Really want to save some gas money you may have to check the followings: 2 t% X5 K" H$ f! t6 r9 j
1. The thermostat settings. Set the temperature as low as you still feel ok. say 16 degree?* q- J! f4 r: j
2. Close the vents near the entrance door and garage door, vents in the bathrooms. , v) R8 m: t1 J/ z4 \) |3 J4 P3. Check the on/off cycle of the furnace, and flame of the furnace to make sure the furnace burns efficiently . ( need a professional people to look after)