If you're choosing between these two very different air compressors, the decision isn't really about which one is "better." The AllMetal 40 Gal Gas and the Gardner Denver EDE99M are two solutions to two different problems. The AllMetal is a self-contained gas-powered unit that brings its own engine to remote jobs and off-grid sites. The Gardner Denver is a stationary electric rotary screw machine meant to become a permanent part of an industrial facility. Your power source, worksite, and air demand will point you to one or the other.
Quick verdict
For $2,699, the AllMetal 40 Gal Gas gives you a mobile compressor that runs on gasoline and comes with its own tank. For $5,000, the Gardner Denver EDE99M gives you a high-output rotary screw unit with a stationary installation for continuous industrial air. The Gardner Denver costs $2,301 more, but that money buys a significantly larger capacity class.
| AllMetal 40 Gal Gas | Gardner Denver EDE99M | |
|---|---|---|
| Price | USD 2,699.00 | USD 5,000.00 |
| Power source | 9HP gasoline engine | Electric 50HP motor |
| Compressor style | Gas-powered portable | Stationary rotary screw |
| Setup | Portable with 40-gal tank | Horizontal fixed installation |
| Condition | New | Used with new motor |
Where each product wins
The AllMetal wins when you're away from grid power and need to bring air with you. Its gas engine and 40-gallon tank let you power impact wrenches, spray guns, sandblasters, and nailers on farms, work sites, and outdoor locations. It's also the more budget-friendly option.
The Gardner Denver wins when your facility needs a high-output, continuously running air supply. The rotary screw design and fixed installation make it a serious industrial asset, provided you have the electrical service and floor space to support it.
AllMetal 40 Gal Gas
The AllMetal 40 Gal Gas puts a complete air station on a movable frame, as long as you're willing to run it outdoors. Its Loncin 9HP four-stroke gas engine powers the pump to deliver 14.5-20.6 CFM and a maximum 175 PSI into an ASME-certified 40-gallon tank. That combination is enough to keep up with pneumatic impact wrenches, spray guns, sandblasters, and nailers at a work site. The trade-off is that it's a 250-lb machine that needs gasoline and a well-ventilated location, so it's not meant for a quiet indoor machine room. It's also new, which means you get the full life of the components ahead of you rather than inheriting someone else's wear.
Gardner Denver EDE99M
The Gardner Denver EDE99M is a fixed electric rotary screw compressor built for industrial floors. The unit is from 2000, but it has a new Baldor motor dated October 2025, so the most rotation-heavy part has been refreshed. As a 50HP electric machine, it's meant to sit in place and feed a steady stream of compressed air to tools and machinery all day. The horizontal orientation and fixed-mount setup mean you'll need to plan the location, run the hookups, and make sure the electrical service matches the motor's requirements. It's described as in good working order and ready to install. The main thing to hold in mind is that you're buying a used machine with historical wear and tear, not a factory-fresh unit, and the installation work is on you.
Final choice by use case
Choose the AllMetal 40 Gal Gas when the job is remote, portable, or off-grid. It's the lower-cost way to get compressed air without a building's electrical infrastructure. Choose the Gardner Denver EDE99M when your operation runs all day on high air volume and you have a fixed spot with the right power and space. The higher upfront investment goes toward a much larger industrial class.
