Airend failures, engine problems, and control issues can turn a used compressor into an expensive paperweight. Get independent verification before you buy.
Portable compressors run hard on job sites — often in dusty, dirty conditions with inconsistent maintenance. That abuse wears out airends, engines, and controls faster than you'd expect. A compressor that builds pressure today might be one shift away from failure.
Worn rotors, damaged bearings, and seal leaks in the compressor airend. Rebuilds run $5,000–$15,000 depending on CFM rating.
Blow-by, injector failures, and cooling issues from dusty operating conditions. Repairs range $2,500–$12,000.
Clogged separators, failed thermostatic valves, and contaminated oil cause overheating and poor performance. Repairs cost $1,000–$4,000.
Faulty pressure switches, bad sensors, and wiring problems cause improper operation. Repairs range $500–$3,000.
Leaking hoses, fittings, and connections reduce output and waste fuel. Repairs cost $200–$1,500.
Clogged coolers and failed oil separators cause overheating and oil carryover. Repairs run $1,500–$5,000.
This is what repairs cost when issues go undetected. Our inspection is just $800.
Compressor Inspection Checklist
Our inspectors perform a comprehensive compressor evaluation — checking the airend, engine, oil system, controls, and all supporting components under actual operating conditions.
Your Inspection Report Includes
25-40 high-resolution photos covering engine, airend, oil system, coolers, control panel, trailer/frame, and any problem areas found.
Written summary with Good/Fair/Poor ratings for airend, engine, oil system, and all major components. Includes pressure test results and clear identification of issues.
Video footage of the compressor starting, building pressure, and running under load. See and hear exactly how the unit performs.
Simple 3-Step Process
Send us the compressor details (make, model, serial number, CFM rating) and location. We coordinate with the seller to schedule the inspection.
Our inspector performs a thorough evaluation — testing airend, engine, and controls while documenting everything with photos and video.
Receive your detailed inspection report via email within 24 hours. Know exactly what you're buying before you commit.
Compressor Inspection FAQs
Most portable compressor inspections take 1.5-2.5 hours depending on size and configuration. Larger units (900+ CFM) may take longer.
We inspect all major brands including Atlas Copco, Ingersoll Rand, Sullair, Doosan, Kaeser, and Chicago Pneumatic. Diesel and electric portable compressors of all sizes.
When conditions allow, we verify the compressor builds pressure properly and maintains output under load. Precise CFM measurement requires specialized equipment not always available on-site.
We evaluate airend condition through operating temperature, discharge pressure, noise, and vibration. Excessive heat, low output, or unusual noise indicate internal wear.
We check oil separator condition by evaluating oil carryover in the discharge air and pressure drop across the separator element. Failed separators waste oil and contaminate air tools.
Yes. We regularly inspect compressors at construction sites, rental yards, and dealer locations. We coordinate timing to minimize disruption to operations.
We inspect all sizes — from small towable units (185 CFM) to large portable compressors (1600+ CFM). Rotary screw and reciprocating types.
Yes. For towable compressors, we inspect the tongue, coupler, safety chains, jack, tires, wheels, lights, and frame condition.
The IronCheck Difference
We work for you, not the seller or rental company. Our only goal is giving you the truth about the compressor's condition and reliability.
Our inspectors understand portable compressor systems — airends, oil circuits, and the failure modes that cause expensive downtime.
We inspect compressors across all 50 states. Job sites, rental yards, dealers — wherever the unit is, we can get there.
Most inspections scheduled within 24-48 hours. Report delivered same day or next business day.
A dead compressor shuts down your whole operation. Don't gamble on a worn airend or tired engine. Get the facts before you buy.