Buying tips

You're in the driver's seat. There are more manufacturers than ever in the air compressor market. In addition, smaller compressors with lower costs are becoming more popular: the average compressor horsepower has fallen from 125 HP 20 years ago to around 40 today. These combine to give consumers a good amount of leverage. Talk to multiple vendors, and don't be afraid to negotiate to get the features you want.

Built to last. You can expect your compressor to last a long, long time. A rotary compressor has a life expectancy of 40,000 to 60,000 hours - that's 20 to 30 years at eight hours per day. You can expect at least 10 to 15 years from reciprocating compressors, and more if they're properly maintained. This longevity is another reason you should try not to base your decision on the initial purchase price: saving $1,000 up front isn't going to make a difference to your business over 10 years.

Step up and down. Compressor manufacturers typically offer a wide range of models. If you find a brand and model you like that doesn't quite offer the power you need, there's typically another model that's one step up. Likewise, if you wind up over your budget, there's usually a slightly smaller unit you could consider, as well.

Keep speeds under control. Compressors are generally single-speed devices: when on, they operate at a specific RPM (revolutions per minute) setting. One trick some manufacturers use to reduce costs is to create smaller compressors that spin much faster, generating the same total CFM output and PSI at a much lower cost. The problem is, those high speeds can drastically reduce the lifespan of the compressor. Lower speeds are also quieter. If comparing two models with similar ratings but different RPMs, the lower RPM option is probably a better choice for the long run. Want more tips? Read buying tips from other BuyerZone users.