MetroVac Air Force Master Blaster Revolution MB-3CDSWB-30

Metropolitan Vacuum Cleaner Co., Inc. — the manufacturer of MetroVac products — holds UL file E31177 covering vacuum cleaning machines and blower cleaners. A UL Product iQ search on May 17, 2026 confirmed this file at the manufacturer-org level. The per-SKU line-item mapping inside E31177 was not separately exposed in the public search, so the safety_certification score is 8 (file-level) rather than 9. No separate Intertek ETL listing was found.

The Revolution (MB-3CDSWB-30) adds a 30-foot flex hose and front swivel wheels to the same twin-motor steel-canister platform as the MB-3CD. The 30-foot hose lets you position the canister once per side and reach all panels on a full-size SUV or truck without moving the unit. The fixed-wheel MB-3CD ships with a 10-foot hose and requires more repositioning. The motors, nozzle kit, and 5-year warranty are identical.

As of May 17, 2026, the bundle ASIN (B07MZFJFJZ — the Revolution with 3 extra filters and 16 oz MetroVac Car Shampoo) shows as currently unavailable on Amazon. The base 30-foot hose variant (B00UVUTP2S) and the standard swivel-wheel model (B00UMD7TGS) are the available alternatives on the same motor platform.

MetroVac publishes 74 dB at the 4HP setting and 82 dB at the 8HP setting. Community data from the MB-3CD sibling platform (identical motors) describes the unit as loud but manageable outdoors. No independent measurement at or above 85 dB has been documented for this platform. Hearing protection is a reasonable precaution for extended indoor sessions.