Two whole-house electronic air purification systems are available. The filter grille can be installed in any cold-air return housing, typically located on interior ceilings or walls. This allows homeowners to have the benefits of state-of-the-art air cleaning technology in their homes without having to install a completely new HVAC system, said the company. The furnace mount unit can retrofit into virtually any furnace mount housing. The products operate on 24 vac, and are constructed of nonmetallic, high-impact welded ABS. Various sizes are available in each model.

AspenAir Inside, 827 Arnold Dr., Ste. 160, Martinez, CA 94553; 925-271-5520 or 888-326-0976; 925-957-9795 (fax);

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