Gardner Denver EnviroAire T / TZ / TVS Oil-Free
Two-stage oil-free rotary screw, 30–350 hp. Delivers Class-0 air for critical applications.
Type
Oil-free rotary screw
Power
30–350 hp
Flow
130–1,800 cfm
Pressure
60–150 psig
Cooling
air-or-water
Drive
gear
Lubrication
oil-free
Models
EnviroAire T 30–350
Years produced
EnviroAire ~2014 – present.
Sound level
~72–82 dB(A) @ 1 m.
Ambient range
40–115 °F standard.
Motor efficiency
IE3 / NEMA Premium; VSD variants inverter-driven.
Integrated dryer
Optional integrated desiccant dryer for Class-0 dry air.
Warranty
Long-term airend contracts; factory overhaul program.
Control modes
- Load/Unload
- TVS variable-speed
Typical applications
- Pharma
- Food & bev
- Textile
- Electronics
Specs & intervals below are from publicly published OEM literature and long-standing field practice. Torque values, exact revision-dated part numbers, and safety-critical settings vary by serial number — always cross-check the unit’s OEM manual and nameplate before ordering parts or performing service.
Fluid
Spec: GD gear-oil per manual (not in air stream)
Change interval: 8,000 hr
Wear parts
| Category | Interval | Source |
|---|---|---|
| Air filter | 4,000 hr | |
| Gearbox oil filter | 4,000 hr | |
| Intercooler / aftercooler cleaning | Annual | |
| Blowoff valve seat | 16,000 hr |
Consumable part numbers change by revision and region — pull the current number from the OEM portal.
Preventive maintenance
Daily
- Check gearbox level, log stage temps, verify condensate drains
4,000 hr
- Change gearbox filter, clean coolers, sample oil
8,000 hr
- Change gearbox oil, inspect check & blowoff valves
40,000 hr
- Factory airend rebuild
Common faults & first checks
- Stage 2 temp high — intercooler pluggage
- Blowoff stuck open on unload
Controller(s)
- GD Pilot TS / AirSmart — GD Pilot TS: 5.7" TFT color touch; AirSmart: 4-line VFD monochrome (older).
Strengths
- Class-0 oil-free air
- TZ variant is two-stage water-cooled
- TVS variable-speed available
Weaknesses
- Airend overhaul is factory-scope work
Field notes
EnviroAire is GD's oil-free screw platform, comparable in mission to Atlas Copco ZR/ZT.