What could cause my heater not to warm up? What is your question?
Air blows out of the vents, but it never warms up. When the air blows out, it is very noisy. I’m not sure if that’s related to this problem or not.
How long has your 2012 Nissan Sentra had this problem?
Several months
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2012 Nissan Sentra Resources
Noise > Possibly foreign debris trapped in blower fan - will have no effect on temperature. Blower assembly should be removed for inspection.