How To Build A Furnace Filter Rack

Once you're done setting a furnace filter into its place, you don't cheque it out every now and then. Unless it'south fourth dimension for a change, you might even forget virtually information technology anyway.

Meanwhile, what if the air filter won't stay in identify ? Or bends towards the motor in a very inappropriate way?

If so, it'll pass dirty and impure air through the furnace. In the worst instance, it might blow upward the whole arrangement.

We are glad that you've noticed a misplaced filter and landed on this folio. We'll take you through 3 possible fixes(with reasons) on how to proceed furnace filter in place .

Permit's become on the board-

Permit'south Understand the Situation Start

When i says that his " furnace filter won't stay in place ", that comes up with two articulate indications-

The filter itself has moved away from its platonic position in the slot.
No matter if it'due south in a correct/wrong position, the center pleats bend towards the motor.

As a matter of fact, both of these problems can take place individually or all together. So, nosotros'll not divide them into our discussion and enlist the fixes in ane place.

7 Reasons(w/ Remedies) of The Furnace Filter Not Staying in Place

If your furnace filter is not in identify, there can be a number of reasons behind. Go through the list below and see which i ticks the box for your instance-

Furnace Filter Fits Loose in the Slot

Filters have their own slot, where it should fit accurately without any loose fitting. But often, the slot with left with some more infinite than the filter really requires.

The same issue can also happen if-

You decide to go for a wrong size filter in furnace . Example- 1" filter in a four inch furnace filter housing(1st image).
If there'south a channel to firm the filter at the bottom, only not at the top(2nd image).

Here'southward how both of them await similar-

We've seen many users to wonder- " Can I use a 1 inch filter instead of iv or v inches ? Well yous might, just equally a consequence of such misplacement, the filter center often moves towards the motor and calls up farther problems.

Anyways, we need to ensure that the filter tin can't get to movement anywhere out of information technology's identify that we'll define. To make it happen, there are 2 ways-

Remedy 1: Employ A Furnace Filter Metallic Frame/Subclass

Many brands provide furnace filters with metal backing to prevent furnace filter bending issues. In example yours 1 doesn't, it'due south imperative that you lot go one correct away.

These metal brackets contains a metal/cardboard frame around the edges and a wire mesh onto the pleats. The frame holds the filter itself on a static position, where the mesh prevents the pleats to curve towards the motor.

Before you lot buy i, don't forget to match the size anyway. FYI, they are oft called as metallic furnace filter slot cover as well.

Here's some of our favorites-

Best for 12"x12" filters- Filtration Group 38363
Best for 20"x20" filters- Air Handler Pad Belongings Frame 20x20x1″
Best for 22"x22" filters- Air Handler Pad Property Frame 22x22x1″

If your filter comes with its own mesh, you might face a frame misplacement issue but. In that instance, you might try out a furnace filter rack without mesh.

Here's our option of a furnace filter rack –

Famco Furnace Filter Rack xvi×25 .
Protech RXHF-17
Rheem #RXHF-21

Once you get the right fit of size, you'll acquire how to agree a furnace filter in place with no hardship.

Sometimes, furnaces have their own racks provided. But mostly, there is no filter rack in a furnace. In some cases, even using a furnace filter servant clip can solve the issue anyway.

Remedy 2: DIY Furnace Filter Channel

If the metallic bracket is still unable to embrace upwardly the 'space' between the filter and the slot, you've to build a metallic channel as a proper style to place furnace filter.

Don't worry if y'all oasis't washed it before. We'll take you lot through the steps below-

Before you start, these are the tools you lot'll require-

A sheet metallic.
Tin snips.
Sheet metallic bending jig. ( DIY tutorial ).
Sail metallic screws.

Got 'em all? Here go the steps-

Step i: Measure the Length and Width

Mensurate the length of the filter bottom(as information technology's put in the slot). Taking information technology as a length of the sheet metal strip, take iii-4" of width from information technology. Marking the length and width with a pencil.

Footstep two: Cut it with A Tin Snip

Now, cutting the strip across the score lines with a metal snip. Beware of nicking your fingers.

Pace 3: Bend Information technology

Use a jig to curve the metallic halfway across the length. The metal should accept an '50' shape with an bending of 90 degrees. Based on your furnace type, it can exist 45 degrees as well.

Here're the sequences of bending a metal canvass with a jig-

Stride iv: Place Securely

At first, put the filter on its place and marker a line where the channel should be. Take information technology away and put the channel on the line. Tighten up information technology at its places with canvass metal screws.

Once done, make sure that the bottom of the filter isn't sliding forward once you lot plough the furnace on. Also, check for any furnace filter gap and make sure that y'all hold the furnace filter in identify .

Notation: A slight variation of what we've created is called furnace filter u channel . Making sure that information technology serves your purpose, yous tin await upwardly one in the local store.

The Static Press ure on Ductwork

Sometimes, the filter might be clean enough to let enough air to pass through it. But but because a static negative pressure takes identify on the ducting, information technology forces the filter to bend inwards.

The unit of static pressure is " W.C.(inches water column) . If y'all know how to measure static force per unit area in your furnace system , y'all might check the difference between the platonic pressure and the pressure you're having in your system.

If the ideal stat hovers around 0.five" W.C. and yours i at 0.7-0.nine" Due west.C., the furnace static force per unit area is too loftier in your furnace.

So, what causes such static pressures on the filter? Here are the reasons-

A narrow ducting comparing to the motor speed.
A higher blower motor speed comparing to the ducting size.

Equally you can sense, both of these bug can non have place together. Just both of them indicates that your ducting and the motor is having a mismatch anyway.

The fix?

Remedy 1: Use A Variable ECM Blower Motor

With basic furnace setups, you go to utilise regular PSC(Permanent Split Capacitor) motor. And these tin can not piece of work with static pressure in a higher place 0.5" W.C.

On the other paw, using an ECM(Electronically Commutated Motor) tin can expand this range of workable static pressure up to 0.viii" W.C.

Our Favorite ECM Motor: ZHONGSHAN Broad OCEAN M0081903R

Remedy ii: Set Your Ducting

A trouble with the before set was, it might prepare the issue if the furnace filter keeps bending , just it puts a whole lot of force per unit area on the system if the static pressure hovers effectually 0.7-0.8" West.C.

However, if you lot can brand upward your mind to utilise wider ducting, this might deduce the static pressure on the furnace system. The reason, the wider the path is, the less the air pressure is.

Yet, a whole new furnace ducting installation might price you lot quite a fortune.

Chock-full Up Filter

Based on how much of a 'dirty' environment you have, the furnace filter changing interval varies a lot. As an example, if you take double storied domicile with central workout, a i" pleated filter might not serve you well for more than 1 month. When information technology'due south fourth dimension is upwardly, it gets clogged up with dirt.

Now, a clogged up filter is quite poisonous for the unabridged furnace arrangement. Every bit well-nigh of its pores are saturated with specks of dirt, even a mild airflow can brand its central part towards the blower motor. In the worst case, it might get into the motor.

Remedy: Change the Filter More Often

The one and just solution to this problem is to be enlightened of when the filter gets saturated and change information technology right away.

In case you are non certain well-nigh when exactly to change your filter, get an air filter monitor. Information technology will place the clogged furnace filter symptoms itself and alert y'all immediately.

Hither are ii of our favorites-

Dwyer Series Mark II 25 (Shows filter health through dial).
General Aire G99 (Shows filter health through dial just cheaper).
FILTERSCAN WiFi Air-conditioning & Furnace Filter Monitor (Shows filter health through Wi-Fi, text, and email).

Bottom Line

Alright, this is the end of today'southward post almost filter placement in the furnace . Allow us know if we've missed anything, and we'll exist happy to update it past all means.

Happy living!