We have a coleman 2 ton unit, it came with our mobile home that we have had for nearly 5 years. Outside our fan works to the unit and when you switch it on you can hear the thermostat kicking in and the inside unit frosts up and all but it won't push any air through the vents... could someone please give me some info? Thanks

I would start by checking the fan that blows for the inside. Also check the air filter to be sure it is clean.

Not sure if this is where I need to write... we have changed our filters and the blower fan works for the heating part of our unit... just not the cool

If the blower does not work for cool then it will be the blower relay that is giving you a problem. Since the blower works for heat then the blower motor is probably OK so check the relay since it operates the fan in the cooling mode.