Discount Furnace Filter Coupons

Discount Furnace Filter sells filters, humidifiers, thermostats, air cleaners and dehumidifiers.

Hand Tested Coupons

Discount Furnace Filter Coupons


Still works as of 9/4/2012. It also stacked with code save5pct. I entered 5pct code first, then this code to get them to stack. The 5pct code could be expiring soon though.

19 months ago (9.04.2012) by Don

Thanks. This still works as of 1/15/12.

27 months ago (1.15.2012) by Stacy

Worked on top of the other special offers and free shipping. 12/14

28 months ago (12.14.2011) by Andrew

Worked for me. Thanks

28 months ago (12.02.2011) by Jim

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