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Filter Monster Promo Codes

filter-monster.com
21 promo codes·updated Sep 21

There's a very high chance you'll find a working Filter Monster promo code right now. The best code to try is MONSTERWIN10 for 10% off. It worked at checkout this week. There are 20 more on this page, ranked by real shopper results.

BEST CODE RIGHT NOW
10% off storewide
MONSTERWIN10

How often Filter Monster codes work

Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.

DecJanFebMarAprMayJunJulAugSep0%25%50%75%100%NOT ENOUGH DATANOW
Likely workedLikely workedMixed resultsMixedLow chance any workedLow chance
LAST WORKING CODEtoday
WEEKS WITH WORKING CODES6 / 43
NEW CODES · 30 DAYS0
TYPICAL CODE LIFESPAN~30 days
Filter Monster promo codes, ranked
DiscountSourceFreshnessPromo code
5% off storewideFreshness
MONSTERWIN5
15% off select itemsFreshness
CLEARAIR
40% off first month subscriptionSourceStore's adFreshness
BLACKFRIDAY25
40% off storewideFreshness
SUMMER40
25% off Select StylesFreshness
DECEMBER2024
30% off Aire Purifier and HumidifieeFreshness
SHOPPING24
15% off All FiltersFreshness
EARTHDAYSALE
15% off all filtersSourceInstagram postFreshness
FILTERS2023
20% off ALL filtersSourceInstagram postFreshness
SHOPBF23
10% off ALL filtersSourceInstagram postFreshness
SUMMERSALE23
10% off all filtersSourceStore's adFreshness
DAD2023
10% offSourceStore's adFreshness
REMEMBER
14% offSourceStore's adFreshness
VALENTINE23
15% offFreshness
SPOOKY15
15% offFreshness
PRESDAY
10% off your purchaseFreshness
NEW10
20% off first month subscriptionSourceStore's adFreshness
SPOOKY
10% off selected itemsSourceStore's adFreshness
MOTHERDAY2025
10% off all filtersSourceInstagram postFreshness
JULY4FILTERS
16% offSourceInstagram postFreshness
DAD2024

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About this page

Introducing a more honest way to find coupon codes

Every code has a history, and we track it

Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.

Likely not workingMixed resultsHigh chance of working

You'll find one of these charts on every code we list, tracking how it has performed over time.

When there is nothing worth trying, we say so

When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.

Example · when codes are working

Good chance right now78%

Example · when they are not

Nothing likely right now9%

A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.
Nick DreweFounder, Wethrift

How we find and score codes·How we make money