[FONT=Times New Roman][SIZE=3][COLOR=#000000][/COLOR][/SIZE][/FONT][SIZE=3]The furnace ignites and warms; I see theblue flame through the site glass. The blower motor turns on and distributesair into the ducts, I feel air flow from various vents in the house, the greendiagnostic light stays a constant green, indicating no system issues, However,the air flow through the vents doesn’t heat.

coleman model# DGAA090BDTB

Any Ideas?[/SIZE]
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Make sure the air filter is clean.