mammoth bioshielduv® 18w hvac uv light air purifier light bulb - air filter uv lamp for air conditioner, whole house dual uv uvc light in duct filter, uvc light for hvac ac air conditioner 18w (2 bulbs) is up for auction in Home & Kitchen. The current bid is $2.00, 96% below the $52.97 MSRP, in New/Like New condition. Bid on this item at our Georgetown - Triport Road location before the auction closes.