Heater blower noisy and/or dead

Hi guys,
Got an issue with my heaters/blowers!
Basically when I start the car the blowers are dead, if I give the lower dash a whack (where the blower is situated) it’ll come on but only on the highest setting. It’s noisy but after a while it gets really bad and fluctuates and stutters then eventually dies to the point where I just turn them off.

anyone else had an issue like this? Not sure whether it’ll be the resistor (how easy is this to change btw) or the blower motor itself?

cheers in advance, clio 200 btw!
 
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First thing to check the heater plug behind the glove box for melting second check the pollen filter for damp and if it's blocked the air is drawn in through the scuttle that the drains can block up fill with water all info about the problems can be found on the site.