MD introduces Air Master, a full line of industry popular, bottom-emptying central vacuums. Designed and assembled in the USA, Air Master reflects the craftsmanship and quality known to all MD brands. Air Master units are extremely quiet and provide years of outstanding performance. Each Air Master power unit is equipped with a powerful Ametek motor delivering optimum performance for each home. A full line of varying models, heights and motor configurations are designed to clean homes from 1,000 ft2 to 8,000 ft2. The power unit’s main body and motor housing are all 20-gauge steel, while the lower bucket is high-impact ABS to ensure years of reliability. Air Master’s unique hybrid filtration system allows homeowners the choice of Hyperflow® micro-filtration bags or bagless with the pre-installed inverted Microtex cloth filter. Each model comes standard with both options.