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Old 07-31-2018, 06:33 PM   #31
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Re: AC filters


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Fine with me old-timer. But someone who doesn't do the trade like yourself shouldn't be giving advice anyway. Person with 33 years of hvacr experience should be the one giving advice

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I wouldn't have guessed that with the advise you've given. @SeniorSitizen has helped countless people here with good advise.

Cheers!

Last edited by supers05; 07-31-2018 at 06:36 PM.
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Old 07-31-2018, 06:40 PM   #32
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Re: AC filters


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I wouldn't have guessed that with the advise you've given. @SeniorSitizen has helped countless people here with good advise.

Cheers!
No I think the retired old-timer who hasn't done HVAC at all shouldn't be given such terrible advice. And the old-timer especially shouldn't be questioning a person with 33 years of hvacr service and Counting. Cuz I've already seen what cheap-ass hog air filters do which is next to nothing. You want to Merv rating is on hog air filters less than 5.

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Old 07-31-2018, 06:53 PM   #33
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Re: AC filters


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Not in the environments that I've been in it don't work those hog hair filters are complete garbage. And every single you know I've ever seen that blower Wheels have a ton of dirt on them and so do the coils. Residential cleaning a coil can be a massive undertaking. And the new style 80% efficient gas furnaces all have coils in them. I've had to pull heat exchangers out to clean those coils because of crap filters. They're worth a few bucks extra and the garbage you're putting in will never compared to these filters. For an extra 50 bucks a year you have grid filters and they don't have to be changed that often because they are 4 inches thick

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Dirty like this? Jeritrol natural draft 100k furnace running at about 50% burner duty cycle during call for heat in 20F weather. I wonder why...
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Old 07-31-2018, 07:03 PM   #34
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Re: AC filters


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Dirty like this? Jeritrol natural draft 100k furnace running at about 50% burner duty cycle during call for heat in 20F weather. I wonder why...
Just like that and can you imagine what the coil must look like

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Old 07-31-2018, 07:07 PM   #35
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Re: AC filters


I have done a few side jobs and when I do them I always put in tooless entry minimum 2 in filter pleated if I cannot fit in a 4in. The thing that's good about those pleated air filters is that nothing gets wrong if homeowner neglects it just loads up it won't let a bunch of crap go through. I'm not crazy about electronic air cleaners either I've seen some that the equipment looks just like that photograph

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Old 07-31-2018, 07:12 PM   #36
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Re: AC filters


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Did you miss the part that these are pre-filters? The OP has a filter at the unit.

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Sorry for the ignorant question, is the 5" filter at the unit on the inlet side? Does an HVAC system have a filter for the air it is pushing out?
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Old 07-31-2018, 07:13 PM   #37
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Re: AC filters


The one above had an in-the-furnace filter. just a spring clip on both sides of the return. when i first saw it i thought someone had tinned right to the furnace and not put in a filter at all. as it turns out, the springs weren't strong enough to hold the filter in place, so it would just pop out.
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Old 07-31-2018, 07:13 PM   #38
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Re: AC filters


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Sorry for the ignorant question, is the 5" filter at the unit on the inlet side? Does an HVAC system have a filter for the air it is pushing out?
all filters go on the return side of the system in a residential system. they are there to keep crud out of the heat exchanger/coil.
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Old 07-31-2018, 07:14 PM   #39
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Re: AC filters


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Sorry for the ignorant question, is the 5" filter at the unit on the inlet side? Does an HVAC system have a filter for the air it is pushing out?
Inlet. There wouldn't be one on the discharge side unless you're a certified clean lab.

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Old 07-31-2018, 07:17 PM   #40
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Re: AC filters


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Sorry for the ignorant question, is the 5" filter at the unit on the inlet side? Does an HVAC system have a filter for the air it is pushing out?
if you can give me the filter grille size I can tell you the exact Honeywell part number that will great work for your house. The second one I think it's a 20 by 30 but just lower the grill get up a tape measure and measure that inside frame where the filter would sit

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Old 07-31-2018, 07:18 PM   #41
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Re: AC filters


I did put a link in here that should have worked to get you to a PDF on the filters I am talking about. It shows you how goes into your filter grille. Your return air cans are plenty deep enough from the photos I have seen

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Old 07-31-2018, 07:29 PM   #42
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Re: AC filters


I'm actually in my apartment tonight but will be going back to the house tomorrow. I can get a size then.

Is the bigger rectangular grill a return filter as well? Why is that one much bigger? Does that one handle the rest of the house and the smaller ones handle the bedrooms they are in?

If I have that 5" filter at the unit, would the air hog filters be ok for pre-filter use?
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Old 07-31-2018, 07:45 PM   #43
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Re: AC filters


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I'm actually in my apartment tonight but will be going back to the house tomorrow. I can get a size then.

Is the bigger rectangular grill a return filter as well? Why is that one much bigger? Does that one handle the rest of the house and the smaller ones handle the bedrooms they are in?

If I have that 5" filter at the unit, would the air hog filters be ok for pre-filter use?
All those return air filter grills where you can lower the grill are for your system. I will not use those hog air filters as a pre-filter I don't even think you'd be able to fit it in there. You can try if you want to but you will possibly cause more resistance. I don't think you should. The good thing about the 4-inch filter is that it has less static pressure drop through it because of the depth of the filter. 1 inch pleated filters have a lot of resistance 4 inch filters have very little. It will help your system running a little quieter with the 4-inch. Depending how much your system runs every house is different you might be able to get a year or two out of a 4-inch filter I get a year out of my 2-inch filter

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Old 07-31-2018, 07:45 PM   #44
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Re: AC filters


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Originally Posted by h22lude View Post
I'm actually in my apartment tonight but will be going back to the house tomorrow. I can get a size then.

Is the bigger rectangular grill a return filter as well? Why is that one much bigger? Does that one handle the rest of the house and the smaller ones handle the bedrooms they are in?

If I have that 5" filter at the unit, would the air hog filters be ok for pre-filter use?
Yes and yes. You're filters are fine. Just wash them and put them back. They are both returns, just in different locations.

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Old 07-31-2018, 07:46 PM   #45
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Re: AC filters


You keep mentioning something at the unit have you gone into the attic and actually looked at the unit? You don't have any filters there do you? Usually when there is return air filter grills that's where the filters are supposed to go that's it.

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