I am having a new carrier heat pump installed by a local dealer. We are using model fv4cnf003 air handler. There will be no filter at the air handler. before the air handler I am installing and electronic air cleaner. Model eacb-2020. My installer is telling me that I cannot install a 1 inch pleated filter at the return air grill also. I understand the concern with reduced air flow, but I dont think that an electronic air cleaner and a simple 1 inch filtrete filter is too much. I have dogs in the house. 2 huskies. They shed like crazy. I am concerned with the dog hair building up inside the return air duct and getting past the electronic air cleaner.
Can I install a simple 1 inch traditional filter at the return air grill in addition to my electronic air cleaner?