When you say front ac I assume you are talking about the number one roof unit, if you have a Freon leak just replace it, most anything else can be repaired. All the fans and capacitors and blower motors are easy replaced. I agree the Coleman units are problematic ,however they are on the majority of class A units
On the market today. Is yours not blowing or not cooling ?
Alan & Susan
2018 ih45 foretravel
2018 f-150 platinum 4x4