I wont use the first filter until Aptil 1. I always buy a years worth with the last one going in on Jan 1. Will have to let you know what I think after the first one has been in for 3 months. Love the convenience and they look pretty efficient.
I've been unable to find the correct sizes filters for my old HVAC system, until now. The vast offering of sizes at FilterBuy had just the right one for my needs!