kubota m110

I have a Kubota M110 with cab and the air conditioner is cold, but doesn't blow hard. I've checked the filters. Is this normal for Kubota? Any ideas for what to check next?

Have the quote from JD dealer, and the discounted price I'd about even with the Kubota build your own list price. I am looking for a tractor 110 - 120 engine HP, with power shift as a must. The tractor will be used for haying and tillage - pulling a 4 bottom semi-mounted plow most likely, but...