The Filter Source

The Filter Source currently has 1 deal available. These are regularly verified and updated to ensure they work at checkout.

The best The Filter Source offer right now is "1 Verified". This deal has been verified and is currently active.

Yes, you can earn up to 5% cashback on The Filter Source purchases through Refermate. This can be combined with promo codes for extra savings.

Copy the code from this page, add your items to your The Filter Source cart, and paste the code in the promo code or coupon field at checkout. The discount will be applied to your order total before payment.

We update The Filter Source promo codes daily. Our team verifies each code to ensure it's working, and removes expired offers automatically.