Dear Samurais, I have a Bryant heat pump model#213ana024-c.Its making a noise like a fan blade is lightly hitting something metal.The units condenser fan is not hitting anything so Iam not sure what this is.It doesnt warm the house properly and goes to emergency heat most of the time.The unit also will shut off and on.During summer it seemd to cool the house ok.If I turn it on cool it sounds normal Thank you, SAMANERA