What's the advantage of an 80 gallon air compressor over smaller tanks?
Longer run times between motor cycles, maintaining more consistent pressure during sustained tool use. The larger air reservoir buffers demand fluctuations—when pressure drops during heavy tool use, the 80 gallon volume allows more recovery time before reaching cut-in pressure. This reduces motor starts per hour, extending compressor lifespan and reducing electricity consumption from frequent startup current surges. Supports multiple technicians working simultaneously without constant cycling. Better suited for continuous-duty tools like sanders, grinders, and spray guns that smaller tanks struggle to keep up with. The reduced cycling also creates quieter shop environments since the motor runs less frequently.
How many people can work off an 80 gallon air compressor?
Two to three people using typical shop tools simultaneously, depending on compressor horsepower and tool demands. A 5 HP compressor producing 16 CFM supports two mechanics with impact wrenches and blow guns comfortably. A 7.5-10 HP unit delivering 25-35 CFM handles three workers with moderate tool use—tire changes, parts assembly, cleaning operations. If multiple workers run high-CFM tools (sanders at 8-12 CFM, grinders at 10-15 CFM), even 80 gallons cycles frequently. For shops with four or more technicians or heavy simultaneous use, consider 120+ gallon tanks or multiple compressors. Tank size matters less than CFM output—inadequate CFM causes cycling regardless of tank capacity.
Do you need three phase power for an 80 gallon air compressor?
Not necessarily. Single phase models up to 10 HP run on 240V residential/commercial power, covering most 80 gallon compressor options. A 5-7.5 HP single phase compressor suits small shops with standard electrical service. Above 10 HP, three phase becomes more common and efficient, but 15 HP single phase models exist for locations lacking three phase infrastructure. Three phase offers advantages: lower operating costs, cooler motor operation, and better reliability for compressors running 4+ hours daily. If your facility already has three phase power and you're purchasing 7.5+ HP equipment for professional use, choose three phase for long-term efficiency. Hobbyists and occasional users find single phase adequate and less expensive initially.
What PSI do 80 gallon air compressors reach?
Single stage models reach 125-155 PSI maximum, two stage models reach 175-180 PSI. Most tools operate at 90 PSI, making the higher maximum pressure valuable for maintaining steady tool performance as tank pressure drops during use. The compressor cuts out at maximum pressure and cuts in 20-30 PSI lower. Two stage configurations run cooler at higher pressures, better suited for shops requiring sustained high-PSI operation or tools specifying 140+ PSI. Verify your air hose and fitting pressure ratings match the compressor output—standard 200 PSI working pressure hoses handle both single and two stage compressors. Regulators step pressure down to tool requirements.