EZ-2424S – FILTER BASE (24″W x 24″D – 1″, 2″, or 4″ FILTER, GAS)
The point of this base is that the homeowner changes the filter without pulling the furnace door - so it only works if the access door faces a side they can actually reach. In a closet install that is almost always the door side, not the plenum side. Decide before you screw it down. The S version is the one that takes 1", 2" or 4" media; the plain EZ-2424 is 1" only, so check which one you are holding against what the customer buys at the store. E-Z Filter Base builds these in Dallas, so a replacement door or gasket is a local order, not a two-week wait.
10226 Plano Rd, Suite 104, Dallas TX 75238
Questions? Call or text (214) 340-9421
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm
Symptoms of failure
- Homeowner cannot get to the filter without pulling the furnace door
- Filter is being slid into a bare return opening with gaps around it
- Air whistling past the filter instead of through it
- Existing base is rusted through at the bottom from a leaking coil
- No filter rack at all on a system that needs one
Seeing these does not always mean this part is the culprit. Bring the old one in and we will meter it at the counter, free, before you buy.
Gas furnace filter base sized for a 24×24 filter. We could not locate published manufacturer literature for this number, so filter depth and duct connection are not claimed here.
Specs
- BrandE-Z Filter Base Mfg.
- Part NumberEZ-2424S
- TypeEasy-access filter base
- Cabinet size24"W x 24"D
- Filter size24" x 24"
- Filter depth accepted1", 2" or 4"
- Gauge22
- Weight12 lb
- ApplicationGas furnace, upflow or horizontal
- PositionReturn side, upstream of the blower and coil
Installing it yourself
- Shut the system off and pull the furnace door so you can see the return opening.
- Decide which side the access door faces BEFORE you fasten anything - it has to be the side the homeowner can actually reach. In a closet that is almost always the door side, not the plenum side.
- Set the base between the furnace and the return plenum, square it up, and check that the filter track runs level.
- Fasten to the furnace flange, then to the plenum, keeping the joint tight all the way around.
- Seal the perimeter with mastic or foil tape. A filter base that leaks is just an expensive gap.
- Slide the filter in with the airflow arrow pointing toward the blower, latch the door, and run the system to confirm the door holds against blower pull.
Power off at the disconnect first, every time. Not sure partway through? Bring it to the counter and we will walk it with you.
Cross-reference numbers
This part replaces the following OEM and aftermarket numbers:
- EZ2424S
- EZ-2424
- EZ2424
Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.
What size air filter do I need?
Read the size printed on the frame of the one you are replacing, or measure the slot it sits in. Filter sizes are NOMINAL and rounded - a filter sold as 20x25x1 actually measures about 19-1/2 x 24-1/2 x 3/4. Buy by the nominal size printed on the frame, not by what your tape measure says.
Which way does the arrow point?
Toward the blower - the same direction the air is travelling, away from the return grille. Installed backwards the pleats collapse and airflow drops.
Is a higher MERV always better?
No. MERV measures how fine a particle the filter catches, but finer media also restricts airflow. Most residential blowers are happy at MERV 8 to 11. Going higher than the system was designed for trades dust for airflow problems - long run times, a frozen coil, or short cycling on the limit.
How often should I change it in Dallas?
Check a 1 inch filter monthly and change it every one to three months - sooner with pets or during cottonwood season. A 4 inch media filter usually runs six to twelve months. Dallas dust and a long cooling season are hard on filters.
What is the difference between a 1 inch and a 4 inch filter?
A 4 inch filter holds far more media, so it catches more, restricts airflow less and lasts much longer. It only fits if your cabinet or filter base has a 4 inch slot - a 4 inch filter will not go into a 1 inch rack.
Do you have my size on the shelf?
We stock the common residential sizes. Walk in to 10226 Plano Rd, Suite 104 in Dallas and we will match it, or bring the old filter and we will read the size off the frame for you.
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