Same Day Supply Air Filters Lennox Promo Codes September 2026

Find 15 manually checked Same Day Supply Air Filters Lennox Coupons for September 2026, including Promo Codes, discounts and exclusive deals. Expired offers are removed regularly.

Same Day Supply Air Filters Lennox offers 0 coupon codes and 15 deals as of September 2026. Today's top offer: Lennox X6670 MERV 11 Filter Discounted by 15% This Week. Codes are verified and updated daily.

15%

OFF

Lennox X6670 MERV 11 Filter Discounted by 15% This Week

25%

OFF

Lennox X6672 MERV 11 Filter Available with 25% Savings Today

Achieve cleaner air with 25% savings on the Lennox X6672 MERV 11 Filter.

40%

OFF

Lennox X6669 MERV 16 Filter Discounted by 40% Today Only

Secure a 40% discount on the powerful Lennox X6669 MERV 16 Filter for enhanced air purification.

33%

OFF

Lennox X6679 MERV 11 Filter Discounted by 33% This Month Only

Refresh your home's air with a 33% discount on the Lennox X6679 MERV 11 Filter.

45%

OFF

Lennox X6679 MERV 16 Filter Available with 45% Price Drop

35%

OFF

Lennox X6672 MERV 16 Filter Available with 35% Price Reduction

Improve your home's air with a 35% price reduction on the Lennox X6672 MERV 16 Filter.

12%

OFF

Lennox X6673 MERV 11 Filter Available with 12% Savings Now

17%

OFF

Lennox X6678 MERV 16 Filter Now 17% Off Your Next Order

18%

OFF

Lennox X6670 MERV 16 Filter Marked Down by 18% This Season

28%

OFF

Lennox X6678 MERV 11 Filter Reduced by 28% for Better Breathing

Breathe easier with a 28% reduction on the Lennox X6678 MERV 11 Filter.

30%

OFF

Lennox X6675 MERV 16 Filter Now 30% Off Your Purchase Price

Experience superior filtration with 30% off the Lennox X6675 MERV 16 Filter.

20%

OFF

Lennox X6674 MERV 11 Filter Reduced by 20% to Enhance Air Quality

Improve your indoor air quality with a 20% reduction on the Lennox X6674 MERV 11 Filter.

20%

OFF

Lennox X6673 MERV 16 Healthy Climate Filter Now 20% Less

Upgrade your air quality with a 20% reduction on the Lennox X6673 MERV 16 Healthy Climate Filter.

10%

OFF

Lennox X6675 MERV 11 Filter Reduced by 10% For a Limited Period

22%

OFF

Lennox X6669 MERV 11 Filter Now 22% Less for Cleaner Air

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Same Day Supply Air Filters Lennox Community Discussion

Share tips, ask questions & help fellow shoppers save more

BulkBuyerBob

1 month ago

Any hidden discounts for bulk buying MERV 11 Lennox filters?

C CouponQueen 1 month ago ✓ Best Answer

No specific bulk code I've seen, but watch for 'buy 2, get 10% off' promos. They pop up sometimes.

B BulkBuyerBob 1 month ago

Good to know. Thanks!

S SmartShopper 1 month ago

Saw one of those a few months back.

D DealSeekerDave 1 month ago

Sometimes if you call their customer service, they'll give a small discount for 3+ filters. Not guaranteed though.

B BulkBuyerBob 1 month ago

Interesting, never thought of calling.

27 Responses (2) Views (16)

FilterFiend87

1 month ago

Anyone got a code for Lennox MERV 16 filters from Same Day Supply?

D DustBunnySlayer 1 month ago ✓ Best Answer

I signed up for their newsletter, got a 15% off code a few days later. Worth a shot.

B BreatheEasy 1 month ago

Was it for first-time buyers only?

F FilterFiend87 1 month ago

Good call, I'll try that.

H HVAC_Hero 1 month ago

Tried 'SAVENOW10' last week, no luck. Expired maybe?

A AirQualityGuru 1 month ago

Didn't work for me either.

C CleanAirGuy 1 month ago

Yeah, that one's old.

27 Responses (2) Views (103)

NewbieBuyer

1 month ago

Did anyone manage to use the 'WELCOME15' code for a first order on those Lennox filters?

F FirstTimer 1 month ago ✓ Best Answer

Worked for me last week on an X6675 MERV 16. Just signed up for an account.

S SkepticalSam 1 month ago

Still active?

N NewbieBuyer 1 month ago

Awesome, gonna try it now!

C ConfusedCustomer 1 month ago

Didn't work for my X6672. Maybe it's specific to certain models?

E EmailHacker 1 month ago

Or maybe only first order on a new email?

24 Responses (2) Views (26)

PatientShopper

1 month ago

Best time to buy Lennox X6679 MERV 11 filters? Waiting for a price drop.

H HVAC_Insider 1 month ago ✓ Best Answer

Usually see drops around late fall or early spring, before seasonal demand kicks in hard.

P PatientShopper 1 month ago

Good tip. Thanks!

T ThriftyBuyer 1 month ago

Following this strategy.

S SalesWatcher 1 month ago

Black Friday is always a safe bet for filter deals across the board.

P PatientShopper 1 month ago

Too far away!

20 Responses (2) Views (79)

EmailRecipient

3 weeks ago

Just got an email from Same Day Supply with a 10% off code. Is it generic?

C CodeChecker 3 weeks ago ✓ Best Answer

Mine was 'SAVE10NOW'. Check if yours is the same. Sometimes they recycle them.

L LuckyLister 3 weeks ago

Worth a shot!

E EmailRecipient 3 weeks ago

Different code for me. Bummer.

C CouponSharerFail 3 weeks ago

Usually, newsletter codes are unique per email address. Tried sharing one once, didn't work.

E EmailRecipient 3 weeks ago

Ah, figured. Thanks for the heads up.

15 Responses (2) Views (112)

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