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
American Standard 221DA.10... $176.64
Lasko 754200 Ceramic Heate... $29.99
Hard Maple Lumber 3/4"x2"x... $10.90
Hausbell 7W Ultra Bright M... $8.99
BLACK+DECKER LDX120C 20-Vo... $48.00
Custom Leathercraft 125M H... $9.52
Safe Paw Non-Toxic Ice Mel... $14.99
WORX 16-Inch 14.5 Amp Elec... $79.10
Suncast SC2700 20-Inch Sno... $24.40
Star Shower As Seen on TV ... $42.85
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