Rolair 8230HK30
#10 in StationaryFull review
A jobsite gas compressor for crews that need high airflow away from the grid.
Amazon $2,751$2,751
The Rolair 8230HK30 is the better air compressor overall, rated 3.0 to 2.4. The Rolair 8230HK30 leads on airflow. The DeWalt DXCM251 wins on tank. The DeWalt DXCM251 costs $1,928.29 less ($822.71 vs $2,751).
DeWalt DXCM251
#18 in StationaryFull review
A belt drive compressor for a 120 V garage, for someone who wants a longer lasting oil pump and high tank pressure without wiring in 240 V.
Amazon $822.71$822.71
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Rolair 8230HK30 for airflow (20.1 CFM at 90 PSI vs 6.2 CFM at 90 PSI).
- Choose the DeWalt DXCM251 for tank (25 gal tank vs 20 gal tank).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every stationary air compressor; a clear win is highlighted. How we rank explains each one.
| Factor weight | Rolair 8230HK30 | DeWalt DXCM251 |
|---|---|---|
| Overall rating | 3.0/5 | 2.4/5 |
| Value 30% | 32 $136.87 per CFM at 90 PSI ($2,751, 20.1 CFM) | 34 $132.70 per CFM at 90 PSI ($822.71, 6.2 CFM) |
| Airflow 25% | 100 20.1 CFM at 90 PSI | 32 6.2 CFM at 90 PSI |
| Tank 10% | 20 20 gal tank | 30 25 gal tank |
| Noise 15% | 50 noise level not published (neutral score used) | 28 78 dB(A) |
| Warranty 20% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Rolair 8230HK30 | DeWalt DXCM251 | |
|---|---|---|
| Air | ||
| Airflow at 90 PSI | 20.1 CFM | 6.2 CFM |
| Max pressure | - | 200 PSI |
| Tank | 20 gal | 25 gal |
| Pump and motor | ||
| Power | Gas | Corded electric |
| Motor | 9 hp | 2 hp, 120 V |
| Running amps | - | 15 A |
| Stages | 1 | 1 |
| Oil-free pump | No | No |
| Build | ||
| Style | Wheelbarrow | Vertical |
| Noise | - | 78 dB(A) |
| Weight | - | 155 lb |
| Warranty | 1 year | 1 year |