I have a Premier ATV horizontal two stage unit. When it was installed 15 years ago, it was not sloped properly, and water would sit in the coil drain pan at the far end away from the drain line, which caused it to eventually rust and grow mold on all of the insulation inside the unit. I managed to get the unit sloped to drain the water properly a couple years ago and replaced all the insulation with new stuff that will not allow mold growth, but the damage was already done. I have tried sealing the pan on two occasions, but I can only access part of it, and it must be rusted and leaking in parts not accessible. Condensate leaks into cabinet... then in to pan under unit. Why Waterfurnace did not use a plastic pan in this unit is beyond me. My only option now is to get the pan replaced. Is it possible to lift the coil enough to replace the pan without damaging the refrigerant lines and having to deal with the older refrigerant? If the answer is yes, how? I have gone as far as removing the top, and all screws on both sides of the coils that appear to be holding it in place, but can't get it to lift even a mm off the drain pan. I do not want to force it and damage the refrigerant lines. If I have to call in an HVAC company, what would ballpark cost on this be? Any advice would be greatly appreciated.