What is a good air purifier? Had 3 ionic pros and they all died in a year?

If you have asthma, you understand the huge benefits of a high quality air purifier. The best value for your money is the Sun Pure SP-20C room air purifier at http://www.allergy-relief-air-purifier.com/portable-air-purifiers.html. We have customers that have been using these for over ten years and call back year after year to tell us of how this machine has changed their lives. This unit incorporates a host of features, as you can see on the site, and is capable of air cleaning up to 2,000 sq ft. The computerized controls allow you to set it and forget it, since it is continually monitoring the air as it cleans. You will be hard-pressed to find a better unit, especially for the price. Good luck!!