Yes, every U.S. and Canadian customer who places an order can take advantage of the EXAIR Corporation Guarantee which states: 

"EXAIR unconditionally guarantees
its cataloged products for 30 days.
If you are not satisfied for any
reason within that time
you may return the product for full credit
with no restocking charge.
Of course, this is in addition to
our "Built To Last" warranty.”

We would like you to call an Application Engineer at 800-903-9247 before returning a product so they may work with you to try to solve your problem and make your application successful.