Shopco
Member
Is it possible to quantify the state of my HVAC filter using a manometer?
You want to check the pressure difference between the two sides of the filter...so, one hose would need to go on one side, and the other on the other. I suppose you could leave one side open, and compare the difference when measuring both sides of the filter with the other hose as well.
One side of the manometer needs to be open to the atmosphere. If there are multiple check points he either needs multiple manometers or to take readings at each location.
I was warned not to use height Merv filters with newer air handlers. Newer variable speed AC air handlers throttle speed to maintain constant CFM. Restrictions cause expensive motor burn outs.
With such a blower, a manometer across a filter would be even more effective at identifying filter clogging.A variable speed [constant CFM] blower may make a manometer indicator useless, Never really put that into the equation.
With such a blower, a manometer across a filter would be even more effective at identifying filter clogging.
This is awkward, but...
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