Thank you for using Just Answer. My name is Justin. I will work hard to help you solve your problem, start to finish. As we move forward with your problem, please remember to provide positive feedback after you accept my answer. You will still receive additional assistance at NO EXTRA CHARGE should you require it. Now, let's get started shall we... Here is what I'd like you to do. Place the unit where it normally sits. Pull the bucket out. Reach up under the front louvered section and pull out the filter. Plug it in and let it run for one hour. After this hour, peak up through the louvers with a flash light. Do you see that the ENTIRE evaporator is frosted or just near the top most part of the evaporator? This info is critical for me to give you the correct answer.