That could mean that your filter needs to be changed, which is causing the furnace to overcompensate and eventually suck exhaust gases into the home. You should change the filters on a monthly basis.
Solve Common Furnace Problems with 9 Easy Fixes
Angel Soft Double Rolls To... $21.94
Lasko 754200 Ceramic Heate... $23.49
Hard Maple Lumber 3/4"x4"x12" $6.03
Outlite A100 High Powered ... $13.99
BLACK+DECKER LDX120C 20-Vo... $45.00
Custom Leathercraft 125M H... $9.22
Snow Joe MELT25CCP 25-LB P... $13.11
WORX 16-Inch 14.5 Amp Elec... $87.10
AAA 4004 Red Aluminum Spor... $18.42
Star Shower As Seen on TV ... $39.88
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