Need assistance please.

Deleted duplicate post. sorry.

Are you talking about the fan in the overhead AC unit, or the fan in the propane heater??

1. Climb up on the roof and remove the cover to the unit.
2. Climb back down and turn on the unit to make the noise.
3. Climb back up on the roof, and keeping hands away from moving parts, ascertain where noise is coming from.
4. Possible causes: fan blades or other parts hitting something, mud daubers made nest on blades causing off balance, bearings on motor worn.
5. After seeing what is causing problem, post on here for solutions if you cannot then fix it yourself.

You would have to go on the roof, remove the covers, and get brand, model, and serial numbers. Then locate supplier and order motor, and probably blower and housing. Then remove and replace all the above. On that age unit, probably be better to replace entire unit. Estimate cost at $900-$1200 for new, no idea on replacement parts, or enev if they are available.

Saver529 wrote:
But, what if I wanted to fix it like I currently do? What exactly would I need? As well the cost range? I'd really appreciate it thank you

If you are having to ask these questions you probably should call a mobile tech.

But, what if I wanted to fix it like I currently do? What exactly would I need? As well the cost range? I'd really appreciate it thank you

It would be easier and cheaper to buy a portable electric heater to use instead of the Air conditioner heat.

May you possibly be able to help me go about fixing it? Or would it need replaced

Sounds like your fan motor has a bad bearing.
A mobile tech could help you if you can't do it yourself.