![]() ![]() Required airflow capacity ranges from about 2.2 to 5.5 cfm, depending on the tool. To work properly, most air tools require 90 psi. Most consumer-grade quiet air compressors fall in the 1.5- to 2.0-hp range because more powerful electric motors cannot use a standard household wall outlet. The engine power is used to pump air into the tank. With higher-quality materials, better design, and tighter construction tolerances, it is possible to gain more overall capability while horsepower stays the same. The horsepower rating shows both the motor’s strength and the unit’s overall efficiency. PerformanceĪn air compressor’s working ability is shown by three key measurements: horsepower (hp), air pressure that’s shown in pounds per square inch (psi), and airflow capacity that’s shown in cubic feet per minute (cfm). Other noise-reducing solutions to watch for include cast-iron pistons, low rpms, and ASME-certified air tanks. The noise level, caused by friction in the motor, is affected by the pump design and the material of the components.ĭouble-piston, or duplex, pumps are more efficient and even less noisy because they move less to create the same amount of compressed air. To provide some context, 30 dB is equivalent to a whisper, 60 dB is the level of normal conversation, and a lawn mower engine is usually about 90 dB.Įntry-level single-piston compressor pumps are typically loud, whereas similarly designed units made with higher-quality materials create less noise. Most air compressor noise ratings range from 40 to 92 decibels (dB), but the best silent air compressor ratings are near 60 dB. They are available as wheeled and stationary configurations and have heavy-duty components for higher usage: framing, woodworking, and automotive use. Single stage compressors have a 10- to 20-gallon and larger tank with a vertical construction.Twin stack compressors have dual air tanks, are low maintenance, and are good for powering finish and trim tools. ![]()
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