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  1. #1
    Join Date
    Dec 2011
    Location
    Twin Cities Minnesota
    Posts
    278

    AIR FILTER REPLACEMENT ?

    Im wondering if anyone has seen an affordable,easy read meter..,that could be installed in ducting to help home owner know when there filters need to be changed. Its the larger 4'' styles that are visually hard to tell.,and the cost of them, makes H.O. reluctant to do so. Thanks ahead!

  2. #2
    Join Date
    Mar 2008
    Location
    kansas
    Posts
    145
    magnhelic??????????
    Honeywell you can buy better but you cant pay more

    I told my wife when i die to sell my fishing stuff for what its worth not what i told her i paid for it

  3. #3
    Join Date
    Jun 2001
    Location
    Moore, Oklahoma, United States
    Posts
    4,506
    Maybe a furance pressure switch that could turn a light on if static was over a certain amount? You woudl have to test to see what a good reading is and select the appropriate switch..

  4. #4
    Join Date
    May 2006
    Location
    Austin, Texas
    Posts
    303
    They do make such a device. Do not know who or where. Saw one in the past that mounts on blower access door. I suppose they had to drill a small hole to take a relative static pressure reading. A pointer would indicate pressure when filter is installed and move according to static pressure as filter became loaded.

  5. #5
    Join Date
    May 2009
    Location
    in the present
    Posts
    93
    A DP switch wired to an indicator lamp of some sort would work.

  6. #6
    Join Date
    Oct 2009
    Location
    Raleigh, NC
    Posts
    802
    I have this on my furnace: http://www.amazon.com/HomeAire-Radon...ords=dynameter

    Dwyer used to make a couple of acrylic manometers specifically for use as filter gauges.

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