Hello. We recently purchased a 12 year old 3,000 sq foot house with a pump and dump geothermal system. We have only owned the house for 3 weeks and can only visit the house on the weekends - we are relocating 100+ miles. The house is located on the side of a mountain in the central PA area. I know little about the system and plan to call the installer tomorrow. There was no filter in the small whole house filter. I installed new one two weekends ago. It is shot after two weeks. Picture is attached. There is also a filter about 1/3rd of that size that is also shot. There is also white build up on fixtures around the house, calcification? There is what appears to be a water softner that has been disconnected in the basement. I now believe it a large filter or filter/softner combination. When the heat exchanger is running we have very little water pressure/flow. When the filter is removed things seems to work fine. Can anyone give me guidance? What questions should I ask the installers. What is the correct terminology of the filter/softner that I should have installed? Thank you in advance.