material. A better pleated filter may create more resistance then the cheap ones and that could be an issue. Also if the filter is moving around then I have to assume it is inside the blower compartment and not in an external rack. This is less then ideal because most furnace manufacturers do not set the furnace up to have anything but an external rack. It is just lazy in my own opinion for someone not to install a rack because they hardly cost anything. You may have someone come out to give you a price on installing a rack for you.

down the best you can get in a 1" application. They range in price some are as much as $25 but why don't you try one in the $15-$20 range and see if it helps. Also you may consider leaving the fan switch set to the on position for a few days at a time. The indoor blower can handle it, it wont effect your power hardly at all but it gives the filter a better chance to get the stuff out of the air. Hope this helps!

hubby should try. That is a very high price for them though, get at least 3-4 prices and clarify. If they say they are cleaning things, what exactly are they cleaning? If they clean the coils indoor and out then the price is more reasonable but if by cleaning they mean hosing the outdoor unit off and brushing the burners for the gas systems off then that's not a big deal nor is it worth the additional money. Manufacturers and companies alike recommend a yearly service but in today's world it is not so much that they require maintenance, it is more of a preventative check to identify parts that may be problematic before they go bad.

that is over 5 years old checked/serviced at at least every other year on twice a year if your over 10 years into it.

How do I know? We installed them for 8 years and we stopped using them roughly 2 years ago....we are still handling warranty claims on them to this day. Do not even consider wasting your money on anything under the brand name Goodman. My personal favorites are American Standard and Trane which is essentially the same equipment made by the same corporation and as far as consumer reports goes I dont know which year Jan was looking at but the most recent listed these 2 as the top two on the market. I handle mostly service and have done so for 12 years, one thing I can honestly say is these are the best most reliable units out there in my opinion.