Filter directly on the A Coil

[rmiller41 (Robert Miller)]

Thoughts?

[dwigger (David Wigger, CMI, Retired)]

Not seen it like that before. Usually on those type of units I see the filter on the back side of the louvered cover panel.

[rkenney (Robert (Bob) Kenney, CMI® MD Lic.# 31044)]

Terrible idea. Air flow should go through the filter BEFORE reaching the blower or A coil. All that was accomplished is restricting the air flow at the A coil and insuring that the dirt stays with the A coil. (evaporator is wet from condensation, why would you want wet dirt, hair, pollen and whatever else is floating around that house concentrated at the A coil?)

Definite fail.

[ddagostino (Dominic DAgostino, CMI HI3957)]

Is this a downflow install?
If so, the air is hitting the filters before the coil & blower.

[bcawhern1 (Brian Cawhern, CMI)]

Looks like a mobile home, vents are in the floor.

@dwigger

I see the filter on the back side of the louvered cover panel.

I agree!

[rkenney (Robert (Bob) Kenney, CMI® MD Lic.# 31044)]

@ddagostino

Is this a downflow install?

Hadn’t really considered that. Looks like a return grill. 'Course I still wouldn’t want my filters to contact the wet evaporator.

[ddagostino (Dominic DAgostino, CMI HI3957)]

@rkenney

Course I still wouldn’t want my filters to contact the wet evaporator.

Completely agree, I’ve seen soggy filters adhered to coils in similar setups.

[jspencer (Jeff Spencer)]

Looks like a Colman mobile home furnace. The filters go in the filter rack, in the upper door.