ArmchairQB said:ScrawneyWallet said:JonesBeach said:I love how 3M is always giving stuff away!

Maybe that is why their stock is trading in the $3 range...

?? 3M

My thoughts exactly!! "When did 3M drop to $3? Was going to do a link & ArmchairQB got to it first! Thanks OP!

Am I the only person who can't find the form? I filled in the pledge form and all too. I only find a link for free filter w/ purchase of 4. Am I missing something? Feel pretty stupid right now..

I think theres always the debate on whether these filters are "good". Well, when new, they definitely work by filtering dust, but let enough air through. The airflow performance is listed on most good filters. However, they only last "up to 3 months". I find that if you have an older house, 2 months is pretty much max. I also know that most people forget about the filter and leave it in there for the year. I think thats where having the 3M filter will destroy your furnace fan motor....

In comparison, the $1/$5 fiber filters are next to useless for cleaning your air. It will keep the big debris from getting in your motor, but thats pretty much it.... And spraying pledge on it? Well, would you spray pledge into the fan motor?? Would you want to breath small amounts of pledge for the first few days of spraying your filter?

If you want cleanER air, and remember to change your filter regularly (at least once every 3 months!), you will definitely breath better and won't harm your furnace/AC much with these 3M filters...

Thanks for the reply. Will update the quick summary with the link as well.

TxAggieJen said:Deets said:Am I the only person who can't find the form? I filled in the pledge form and all too. I only find a link for free filter w/ purchase of 4. Am I missing something? Feel pretty stupid right now..

JonesBeach's post (the first post after OP's) has the link you are looking for. OP, why did you change your rebate form link?

TheDude said:leonc said:TheDude said:jonnashville said:These are recommended by my HVAC guy... Those cheapos only work when they're completely covered in dust.Actually, two different HVAC guy's told me not to use the Filtete filters. The HVAC who installed my furnace in the house when new as well as different HVAC guy who extended the runs when I finished my basement. Both said the Filtrete reduces air flow and reduces the efficiency of the unit.

The tip HVAC #1 gave - spray the "cheapo" filter lightly with Pledge or other similar furniture polish spray, that will attract the finer dust particles, maximizes the air flow and keeps $$$ in your pocket.

Do you mean the ~$3 paper filters or the ulta-cheap (~$1) spun fiber filters?Both (surprising to me) said the ultra-cheap filters were the best to be used.

That's absolutely true especially if you have a heat pump system. You want to maximize airflow across the evaporator coil. If you use a restrictive filter you can fail to extract maximum efficency from the coil. Worst case it will send liquid refrigerant back to the compressors and could potentially kill the compressor. (or reduce it's life).

Use the cheap blue filters and change them monthly.

I can buy more than one filter as long as the total price is less than $19.99, right?

thanks, was gonna goto hd this weekend to buy a filter anyways.

henny said:That's absolutely true especially if you have a heat pump system. You want to maximize airflow across the evaporator coil. If you use a restrictive filter you can fail to extract maximum efficency from the coil. Worst case it will send liquid refrigerant back to the compressors and could potentially kill the compressor. (or reduce it's life).

Thank you for saying that. I heard an A/C tech. say one time that the re-usable, washable filters were "compressor killers." I thought he was just blowing smoke when he made the comment because I couldn't imagine what connection there could possibly be between what a compressor/heat pump is doing outside and how much airflow is going through the system inside, but your comment ties it all together.

glim888 said:maybe you're thinking of 3COM stock and not 3M

Exactly. lol I had to go back and check my watch list to see why I'm insane. COMS, you know, 3Com, the guys who make post-it-notes, right? ROFL

stevie123 said:In comparison, the $1/$5 fiber filters are next to useless for cleaning your air. It will keep the big debris from getting in your motor, but thats pretty much it.... And spraying pledge on it? Well, would you spray pledge into the fan motor?? Would you want to breath small amounts of pledge for the first few days of spraying your filter? I guess you don't understand what "lightly" means. With a light covering you 1) won't be pulling anything into your fan motor and 2) you don't smell anything because it's a LIGHT spray. You smell more pledge in your house when you dust using it than you would ever do by spraying the filter LIGHTLY. The only thing this does do is create a way to trap the finer dust particles almost to the same level as paying the $$$ for the Filtrete. But hey, drop a $20 every quarter or so if that makes you feel good.