Freon smell and heater not working as good as it used to

[angrygenerator]

Late last summer, my wife and I began noticing that there was a strong Freon odour coming air conditioner when ever we had it set to recirculate air and the blower control knob set to position two. And recently we've also noticed that the heater takes much longer than it once did to warm the car in the morning. Any ideas why this might be so. and is this problem likely to be something covered under warranty?

Thanks in advance for your replies,

Shane.