Piston - reciprocating compressors. Shop Now

Piston air compressors, also called reciprocating compressors, deliver reliable compressed air for workshops, job sites, and industrial facilities. CompressorPros carries single stage, two stage, and duplex configurations from 1.5 HP portable units to 15 HP and above stationary systems. Browse electric and gasoline models with free shipping on every order. No piston air compressor is 100% duty. Always oversize by at least 25 - 30% for two stage and at least 50% for single stage.

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What Are Piston / Reciprocating Air Compressors?

A piston air compressor, also known as a reciprocating air compressor, uses one or more cylinders to draw in ambient air and compress it into a storage tank. These are the most widely used compressor type across auto repair shops, construction sites, manufacturing floors, and home workshops, valued for their straightforward design, broad horsepower range, and low upfront cost compared to rotary alternatives which can run 100% of the time versus a piston air compressor that at the most can operate 75% of the time, but the majority have a duty cycle of 60% or less. Generally, a single stage piston air compressor will have a maximum duty cycle of 50% and a two stage, 75% or less. If you have any questions concerning the duty cycle of a particular air compressor, please ask before purchasing.

This category covers everything from portable units for framing crews to stationary systems for paint booths. The BelAire 4916V 5 HP Two Stage 60 Gallon Air Compressor is a popular entry point for shop owners stepping up from consumer-grade equipment.

Single Stage vs. Two Stage

The most fundamental decision when choosing a reciprocating compressor is single stage or two stage pump design.

Single Stage Air Compressors

A single stage air compressor compresses the intake air one time. This can happen with one piston, or multiple for higher CFM output, but all the pistons are the same size. These units are well-suited to intermittent-duty applications such as nailing, inflating, and light spray work. They are generally more affordable and lighter, making them a practical choice for contractors and DIYers. The Jenny K5HGA-8P 5.5 HP Honda Gasoline Driven Single Stage Portable Air Compressor is a strong example of a gas-powered single stage unit built for job sites without electrical access.

Two Stage Air Compressors

A two stage compressor compresses air in two steps, with an intercooler between stages, producing higher maximum pressures (up to 175 PSI) and greater CFM output per horsepower. They are the standard for auto body work, sanding, and industrial tools that demand higher airflow. Two stage models run cooler, last longer under heavy use, and form the foundation of most stationary shop setups.

Types of Piston / Reciprocating Air Compressors

Portable Reciprocating Compressors

Portable models mount on wheeled carts or carry frames and range from about 1.5 to 8 HP. They serve roofing crews, trim carpenters, and mobile technicians who need compressed air at varying locations. Most portable reciprocating units are single stage, though a few two stage portables exist for users who want higher output on the move.

Stationary Shop Compressors

Stationary reciprocating compressors range from 5 to 25 HP and mount on vertical or horizontal tanks from 60 to 120 gallons. These are the workhorses of auto shops, woodworking studios, and small manufacturing operations. The C-Aire A075V080-1230 7.5 HP Two Stage 80 Gallon Air Compressor provides steady airflow for body work, pneumatic tools, and spray applications without requiring three-phase power.

Industrial and High-HP Reciprocating Compressors

For facilities that need sustained high-volume air but not the continuous-duty output of a rotary screw, industrial reciprocating compressors in the 10-25 HP range fill the gap. These units often run on three-phase power and pair with larger tanks. The Quincy 4153DS12HCA46 15 HP QT PRO 120 Gallon Horizontal Air Compressor is a proven choice for demanding plant environments.

Simplex vs. Duplex Configuration

Beyond choosing a single stage or two stage air compressor, consider whether a simplex (single pump) or duplex (dual pump) configuration fits your needs.

Simplex Compressors

The standard configuration. One pump and motor feed a single tank. Simplex units cover the vast majority of shop and job-site needs across the full HP and tank size range.

Duplex Compressors

A duplex compressor mounts two independent pump-and-motor assemblies on a shared tank, providing built-in redundancy. Duplex configurations are particularly effective for operations that cannot tolerate downtime, such as large automotive shops, body shops, and continuous production lines. The ABAC ABC10-23200HD 2 x 10 HP Duplex 200 Gallon Air Compressor is a high-capacity example for facilities needing uninterrupted air supply.

Key Specifications

When comparing piston air compressors, focus on these specifications:

CFM (Cubic Feet per Minute): The volume of air delivered at a given pressure. Add up the CFM requirements of every tool you plan to run simultaneously, then add at least a 25-30% buffer. CFM is the most important spec for matching a compressor to your workload.
HP (Horsepower): Drives the pump. Higher HP generally means higher CFM, but efficiency varies by staging and pump design. Compare CFM output directly rather than relying on HP alone.
Tank Capacity (Gallons): Larger tanks reduce motor cycling and provide a longer buffer for high-draw tools. Common sizes range from 8-gallon portables to 120-gallon stationary units.
Max PSI (Pounds per Square Inch): Single stage units typically deliver up to 135 PSI; two stage units reach 175 PSI. Verify that the compressor meets your highest-demand tool's PSI requirement.
Voltage and Phase: Units up to 7.5 HP commonly run on 115V (2 HP and Below) or 230V single-phase power. Above 10 HP, 208, 230 or 460V three-phase is standard. Confirm your facility's electrical capacity before purchasing.
Duty Cycle: The percentage of time a compressor can run within a given period. A 50% duty cycle means 30 minutes of run time per hour. Constant run does not mean 100% duty. If you need the compressor to run all of the time, you will need a rotary screw air compressor.

Brands Carried

BelAire: Cast iron pumps and a full range of two stage stationary compressors from 5 to 10 HP, a long-standing choice for auto and body shops.
C-Aire: Competitive pricing across single phase and three phase shop compressors, with strong performance in the 5 to 7.5 HP range.
Quincy: The QT PRO and QP series deliver industrial-grade reciprocating compressors backed by one of the longest track records in the industry.
EMAX: Industrial and silent air series with a focus on higher-HP stationary units and patented noise-reduction technology.
Jenny: Portable and stationary models with a reputation for durability in contractor and light industrial applications.
Industrial Gold: Platinum series compressors designed for industrial use with extended pump life.

These are just some of the quality brands available at CompressorPros.

CompressorPros LLC buys direct from the manufacturer and ships direct from the manufacturer to you, eliminating transit time and potential freight damage.

FAQ

What size piston air compressor do I need for my shop? Add up the CFM requirements of every pneumatic tool you plan to run simultaneously, then choose a compressor that delivers at least 25-30% more to account for leaks, future tools, and duty cycle.

What is the difference between a single stage and two stage air compressor? A single stage compressor reaches final pressure in one stroke, typically maxing out at 135 PSI. A two stage compressor compresses air twice with cooling in between, reaching up to 175 PSI with greater efficiency under heavier use.

What is the most common mistake when buying a reciprocating compressor? Undersizing. Buyers often match the compressor to a single tool's requirement without accounting for simultaneous use, line losses, or future additions, leading to pressure drops and shortened pump life.

How often does a piston air compressor need maintenance? Most manufacturers recommend oil changes every 500-1,000 hours, quarterly belt and filter inspections, and draining the tank every day.

Do I need three-phase power for a piston compressor? Not necessarily. Compressors up to 7.5 HP are widely available in single-phase 230V. Above 10 HP, three-phase power is standard, but we do have a few 10 HP single phase compressors available. Check your electrical panel before ordering.

Does CompressorPros offer free shipping on air compressors? Yes. All orders ship free, direct from the manufacturer, on every compressor in this category. Free standard shipping for commercial addresses with forklift on site, liftgate delivery is available for other situations for an additional fee.

Shop Piston / Reciprocating Air Compressors at CompressorPros

CompressorPros carries a full selection of reciprocating air compressors, from compact single stage portables to heavy-duty two stage stationary units and duplex systems for higher demand environments. Quiet piston models and compressor-dryer combos are also available for noise-sensitive and moisture-critical applications. All orders ship free, direct from the manufacturer.

If you need help sizing a compressor or want a quote on a multi-unit order, reach out by phone (803-339-0445) or through e-mail (info@compressorpros.com).

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Piston / Reciprocating Compressors

Quincy QP 571CS80HCA 7.5 HP PRO, 230 Volt Single Phase, Two Stage, 80 Gallon Horizontal Air Compressor

TANK120V02 EMAX 120 Gallon Vertical Air Receiver with Auto Drain

ABAC ABC10-23120H 10 HP 230 Volt Two Stage Cast Iron 120 Gallon Air Compressor

BelAire 3112D 2 x 5 HP 230 Volt Single Phase Two Stage 37 CFM 120 Gallon Duplex Air Compressor

BelAire 338V 5 HP 230 Volt Three Phase Two Stage 80 Gallon Air Compressor

BelAire 338VE4 5 HP 460 Volt Three Phase Two Stage 80 Gallon Full Featured Air Compressor

BelAire 338VL 7.5 HP 230 Volt Three Phase Two Stage 80 Gallon Air Compressor

BelAire 4G3HKL 14 HP Kohler Two Stage Cast Iron Gasoline Driven 30 Gallon Service Truck Air Compressor

BelAire 6312H4 10 HP 460 Volt Two Stage Cast Iron 120 Gallon Air Compressor

BelAire QP318VE 5 HP 230 Volt Single Phase Two Stage 80 Gallon Quiet Power Air Compressor

C-Aire A075D240-1230FP 2 x 7.5 HP 208-230 Volt Single Phase Duplex Air Compressor 240 Gallon

Chicago Pneumatic RCP-338VS 5 HP 230 Volt Three Phase Two Stage 80 Gallon Air Compressor