Rotary Screw Air Compressors

Gardner Denver is widely regarded as one of the top rotary screw compressor brands, backed by over 150 years of engineering experience since 1859. Their product line spans oil-flooded and oil-free models from 5 to 400 HP, featuring patented TurnValve technology, Governor touchscreen controllers, iConn remote monitoring, and industry-leading Platinum 10-Year Extended Warranty programs.

Scroll compressors use two interlocking spiral elements and are best suited for low-power, low-flow applications up to about 15 HP. Rotary screw compressors use meshing helical rotors and excel in continuous-duty industrial environments from 5 HP to 400+ HP, offering higher flow rates, greater efficiency at full and partial loads, and significantly longer service life for demanding operations.

Oil-flooded compressors inject lubricant into the compression chamber for cooling, sealing, and lubrication, resulting in lower upfront cost and high efficiency. Oil-free models, like the EnviroAire T & TVS (ISO 8573-1 Class 0 certified), produce zero oil carryover - essential for food and beverage, pharmaceutical, electronics, and automotive paint applications where any oil contamination is unacceptable.

VSD rotary screw compressors like the LRS Series can deliver 30–50% energy savings compared to fixed-speed units by continuously matching motor speed and air output to actual system demand. The greatest savings occur in facilities where air demand fluctuates frequently, particularly those operating between 40–75% of full load capacity for significant portions of the workday.

The Gardner Denver rotary screw compressor lineup covers a wide range of operational needs. Flow rates span from 13 CFM (L Series) up to 2,459 CFM (Electra Saver G2), with operating pressures ranging from 75 to 200 PSIG across oil-flooded models. Oil-free EnviroAire models operate from 58 to 145 PSIG and deliver up to 1,800 CFM for critical purity applications.

Gardner Denver offers tiered warranty programs: a standard 2-year package warranty, the Platinum 10-Year Extended Warranty covering airend parts for 10 years and major components for 5 years, and the Platinum+ Full Package Warranty - a 5-year renewable service agreement through factory-trained distributors covering wear items, package components, and scheduled maintenance for complete cost control.

Comp-Air Ohio sells Gardner Denver and CompAir rotary screw air compressors from 5 to 400 HP, with Hydrovane rotary vane alternatives, Zeks dryers, Generon nitrogen generators, and aftermarket parts, lubricants and filtration supplies.