Q: did this gift certificate create a charge on my credit card, or is it paid by points I accumulated. how can I redeem the certificate?
A: Your points can be redeemed by visiting your account page and scrolling down to the "Clean Air Credits" area. To the right of this area is a button to press that says "redeem" and this will bring you to a page where you can see what your points are valued towards.
Q: Can this Certificate be applied to the order I just placed. I have points and would like to redeem for my order. Please advise.
A: The gift certificate needs to be purchased before the order is placed. Unfortunately once and order is placed it can not be applied to the account, it needs to be done during the order so that it gets applied to your account.