hes talking about using a filter with a lower rating.. not higher so it should be less restrictive.You need to be careful when switching to Marv rating filter since the vast majority of ducks are undersized. To do it safely you need to check the air flow and if needed adjust it.
The weird thing is one of Filtretes higher end filters… 3M’s MERV 13/1900 filter has a lower rated pressure drop than their lower end rock catchers.you really just want a rockcatcher. If you want to filter your home air.. use a device for that.
your furnace isnt a whole home air purifier.. and if it is.. its costing you $$$
I buy the cheapest decent filter that is pleated..
right now thats HDX 3 for 10$ at home depot.
Do not confuse Merv with FPR
but these are FPR 5
HDX 16 in. x 25 in. x 1 in. Standard Pleated Furnace Air Filter FPR 5, MERV 8 (3-Pack) HDX3P5-011625 - The Home Depot
HDX filters are constructed of a durable, moisture-resistant frame with wire supported media for strength and rigidity. The wire-backed Pleated media offers a large surface area which increases the filter'swww.homedepot.com
hes talking about using a filter with a lower rating.. not higher so it should be less restrictive.
also its MERV and Duct
Thats really interesting I need to check up on that. Thanks for the heads upThe weird thing is one of Filtretes higher end filters… 3M’s MERV 13/1900 filter has a lower rated pressure drop than their lower end rock catchers.
HVAC Filters
I went down a bit of a rabbit hole today. Many HVAC techs I know and trust (friends and family, some with 60-70+ years in this field!), have always told me a MERV 5-7 cheap pleated filter was the way to go. The hog-hair filters let too much dust hit the coils of the HVAC system, and the MERV...bobistheoilguy.com
Why??? The Merv rating has to do with the air flow through the filter....7 or below allows a good air flow...You need to be careful when switching to Marv rating filter since the vast majority of ducks are undersized. To do it safely you need to check the air flow and if needed adjust it.
Filtrete puts the pressure drops on the filters, I was surprised after reading that study and the 1900’s really are lower than the lower merv ones.Thats really interesting I need to check up on that. Thanks for the heads up
Not necessarily, as I described above sometimes the higher MERV filters offer less pressure drop… probably because they have far more pleats.Why??? The Merv rating has to do with the air flow through the filter....7 or below allows a good air flow...
No mention of the MERV rating...Get a K&N home air filter:
Home, Furnace & HVAC Filters | K&N
Install a washable, replaceable HVAC air filter & enjoy cleaner home air. Help protect your family from bacteria, dust, and allergens with K&N washable home air filters & furnace filters.www.knfilters.com
I just got a 2-pack of red Filtrete 1085/MERV 11 filters at Lowe's. I noticed that the filters with higher ratings--purple 1500 and blue 1900-- had more pleats than the type I bought. I was going to say maybe that affects the pressure drop, but you beat me to it.The weird thing is one of Filtretes higher end filters… 3M’s MERV 13/1900 filter has a lower rated pressure drop than their lower end rock catchers.
HVAC Filters
I went down a bit of a rabbit hole today. Many HVAC techs I know and trust (friends and family, some with 60-70+ years in this field!), have always told me a MERV 5-7 cheap pleated filter was the way to go. The hog-hair filters let too much dust hit the coils of the HVAC system, and the MERV...bobistheoilguy.com
I use a filter of a MERV rating of 6 or lower. It is much easier on the motor and get good air flow.
That's what my HVAC guy told me during a service call in the middle of winter when we had no heat. I bought some nice, thick, extra-filtering filters that restricted the airflow so much it kicked out the limit switch on the furnace. He said buy the cheap filters and change them every 30 days.I buy the cheapest decent filter that is pleated..
Being in Florida our HVAC system runs for a good percentage of the day especially in the summer months. So there is a good amount of change over in my home which obviously is important if you want your furnace filter to filter!
There have been many studies on in home air quality. One study pointed to Merv 11-13 being the sweet spot.
MERV ratings does not at all indicate airflow, the better filters add more pleats to compensate making this a non-issue.
I personally purchase MERV 12 filters. Door for thought, I rented years ago that provided free rock catchers but I noticed after 2 months it still looked relatively brand new. I opted to install a MERV 11 filter and it was night and day difference on how much that filter captured.
Me too was standard equipment...I use a carbon 16x25x5" Merv 16 by Lennox on my furnace. Plenty of air flow, no issues. Pricey, but only replace once a year each Spring.