Is the Simply Air Filter Worth It for Your HVAC System?
By Errol Whitfield, tools & DIY · updated 2026-07-26
A basic MERV 8 pleated filter that does exactly what a standard forced-air system needs, no more.
Worth it, if your system just needs standard dust and pet filtration
around $30price at time of review — check Amazon for current
- Worth it ifYou have a standard 20x20x1 return vent and a normal forced-air system
- Skip it ifSomeone in the house needs a doctor-recommended high-MERV filter
Amazon shoppers rate it 4 out of 5 across 53,519 ratings. That is their number, not ours.
Affiliate link. Opens Amazon in a new tab.
As an Amazon Associate, Is It Worth It Reviews earns from qualifying purchases. It costs you nothing extra, and it has never changed a verdict.
You run a finger along the top of a door frame and it comes back grey, or someone in the house starts sneezing every time the furnace kicks on for the season. That's usually the moment you remember the filter behind the return vent has been in there since spring. Standing in the aisle staring at a wall of nearly identical cardboard squares, the only real question is whether the cheap one and the pricier one actually do a different job.
The Simply air filter is rated MERV 8 and MPR 600, numbers that sound arbitrary until you realize they're measuring the same tradeoff: how much gets caught versus how much air still gets through. A flat filter can only offer so much surface area before it starts choking your blower motor, so the fix is pleating. More folds packed into the same one-inch frame means more fabric spread out for air to pass across, which means the system can push through a finer mesh without straining to breathe. That's why a filter in this range can catch dust, pet dander, and pollen without making your furnace work overtime the way a hospital-grade filter would in a home duct. The arrows printed on the frame aren't decoration, they tell the pleats which way to face so air moves through the mesh correctly instead of against it. Because the fabric is doing more work per square inch than a bare flat filter, it also loads up faster, which is why the three month swap window matters more than it sounds.
So you're not really shopping for clean air, every filter on the shelf promises that. You're shopping for the right resistance for your specific HVAC system, one that screens out everyday dust without starving the blower. That's the whole negotiation a MERV 8 filter is having with your ductwork, and it's why matching the size and rating matters more than the name on the box.
Worth it if
- You have a standard 20x20x1 return vent and a normal forced-air system
- You just want to catch everyday dust, pet dander, and pollen
- You'd rather set a three-month reminder than think about it weekly
Skip it if
- Someone in the house needs a doctor-recommended high-MERV filter
- Your return vent isn't actually 20x20x1
- You're chasing near-hospital-level air purification
Not for households needing medical-grade or high-MERV allergy filtration, or non-standard vent sizes.
If you've got a standard forced-air system, pets, and normal household dust, this is a quiet yes, set a reminder for three months and forget about it. If someone in the house has serious allergies or asthma and needs a higher MERV filter, this isn't the tier for that job. And if your return vent isn't a true 20x20, measure the actual opening, because a filter that's off by a fraction won't seat right no matter how good the pleating is.
Check price on Amazon · around $30 or Add it to your Amazon cart to sit on it
Before you go
Are Simply air filters any good?
For standard household dust, pet dander, and pollen at a MERV 8 level, yes, they do what a basic pleated filter is supposed to do; they're not built for medical-grade filtration needs.
Where are Simply filters made?
They're manufactured in the USA using domestic components, including recycled materials.
How often should I change Simply filters?
Plan on roughly every three months under normal household conditions, sooner if you have pets or run the system heavily.
Full spec sheet
| Brand | Simply |
|---|---|
| Material | Cardboard, Paper |
| Product Dimensions | 19.75"L x 19.75"W x 0.75"Th |
| MERV Rating | 8 |
| Compatible Devices | Air Conditioner, Furnace, Heat Pump |
| EU Spare Part Availability Duration | 3 months |
| Item Weight | 3 pounds |
| Filter Shape | Rectangular |
More tools & diy reviews.