Heater/defroster in 97 F150 w/ac

Just replaced heater core and thermo. Only getting cool air when heater/defroster on. Hose at fire wall hot to touch. Does anyone have any suggestions to problem?

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tunafish44
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"tunafish44" wrote in news: snipped-for-privacy@localhost.talkaboutautos.com:

blend door in heater housing

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Backyard Mechanic

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