There are so much variety of air filters in town, i wonder which brand can work best for my home. Having a little baby at home, it is wise to purify the air especially H1N1 influenza is still spreading wildly now. Winter is near, so i better change the air filter of my heater as soon as possible. Sigh, so much to do but so little time! No, i do not wish to have 48 hours a day, the more hours you have the more you need to do.