The AirForce Stealth central vacuum from M.D. Manufacturing, Bakersfield, Calif., has one of the largest trash capacities available and four-stage filtration for increased motor life. It is electronically spot-welded and uses 20-gauge steel construction. It is one of the quietest central vacuums on the market. The Power3 control unit simplifies the electrical installation and operation and readies it for home automation. The unit does not require any low voltage wires and ties into the home integration system. The unit will shut off automatically when the phone or doorbell rings and sends an e-mail when the bag is full or any other service diagnostic issues are identified. MD Manufacturing

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