text: how old til i can have my sons hearing checked, he is 2 1/2 now, ty? he seems to be having a hard time hearing me lately, always asking me to repeat myself. maybe its a game, but he also has  had a cold recently so maybe his ears are clogged with wax. he had a big clump of wax come out yesterday. we actually had our baby's ears checked in the hospital a couple of days after he was born, so you can certainly get them checked at 2 1/2. they use some method with electrodes (just on the outside of the child's head) and can see whether the sounds are being received in the brain... so it doesn't rely on the kid's being able to say whether he heard something or not.