I have a mastercool cooler and i need to clean the pads. in the past i have tried soaking in a clr solution but it dont help. any tricks to do this would be great. the calcium and other deposits just stay rock hard when i try to clen them. i run a clean machine with it and also have a inline water filter. the pads are expensive to replace every year ,plus they have a 10 year warranty. im only getting about 50% air flow right now. thank you.

CLEANING PADS
My pads are 3 years old. (1) I tried soaking them in Vinegar & water which helped. (2) I then sprayed them with a hose nozzle, that helped also. We live in AZ so the dust storms can be horrendous and I still had build up. (3) So I took a variable speed drill and a wire brush and removed more. (4) Then ,as these filters are made of a wood by product, I took a belt sander ...they look good now. (5) Now when I reinstall them I am going to change the pads so pads facing outside will be facing inside, keeping the 45 degree forward and down. This last step I haven't tried, but it should work.

You can try soaking them in a solution of 70% White Vinegar and 30% Bottled Distilled Water. At minimum you will have to soak them over night. If it appears the deposits have not cleared out in that time frame, soak them longer and rinse with Distilled Water.