Lets see pictures of your Deck

[frenchmon]

I had a high quality filter on the heater and the heater guy who comes to clean it once a year told me to watch the real high end filter as they restrict the air flow too much. Maybe I need a whole house air purifier? What kind of filters do you use noob?

Jack...your tech told you right.....the reason they restrict the air flow is because your air intake works to hard...has to pull more than it has to....putting a strain on the whole system.

The best whole house air cleaners we use to install was the Aprilaire air cleaners...worked great and they where also easy to install.