Filterbuy Promo Codes & Coupons November 2026

Police, fire, and EMS personnel receive a 10% discount on filter purchases. Verification of service is needed.

Purchase one furnace filter and receive a 20% discount on a second. Both filters must be of equal or lesser value.

Orders exceeding a certain quantity or value may qualify for a $15 discount. This applies to larger volume filter acquisitions.

Active duty military members and veterans qualify for a 10% discount. Verification is required to access this special rate.

Select MERV 8 air filters are available starting at $5.99 per filter. Pricing varies by specific dimensions and pack size.

Select odor reduction air filters are available starting at $7.50 each. Prices vary based on filter size and type.

Discover special discounts on air filters during the seasonal spring sale event. Offers apply to a range of filter products.

Medical professionals are eligible for a 10% discount on their purchases. Proof of occupation is necessary to redeem the offer.

Find whole house air filters with prices beginning at $25. Specific filter dimensions affect final pricing.

Customers who subscribe to recurring filter deliveries can save up to 15%. The discount applies to each scheduled shipment.

All orders from Filterbuy include complimentary standard shipping. No minimum purchase is required for this offer.

Purchase eligible multi-packs of air filters to receive a 25% discount. This applies to various filter types and sizes.