Everlast PowerMTS 251Si
The Everlast PowerMTS 251Si delivers solid multi-process versatility at a mid-range price point, making it a practical choice for hobbyists and small fabrication shops that need MIG, Stick, and TIG capability without investing in three separate machines.
- Rated output
- 251 A
- Duty cycle
- 60% at 200A
- Steel window
- 0.8–6.4 mm
- Mass
- 55 lbs (25 kg)
- 3-in-1 welding versatility
- Dual voltage flexibility
- Reliable inverter performance
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Running it
The Everlast PowerMTS 251si stands as a versatile multi-process welding machine designed for fabricators, hobbyists, and professionals who need reliable performance across MIG, TIG, and Stick welding applications. This inverter-based unit combines advanced technology with practical functionality, delivering up to 250 amps of welding power that handles everything from thin sheet metal to thicker structural steel. The compact yet robust design makes it suitable for both shop environments and mobile welding operations, offering the flexibility that modern welders demand without requiring multiple dedicated machines taking up valuable workspace. The MIG welding capability on the PowerMTS 251si features synergic controls that simplify parameter setting, allowing operators to achieve consistent, high-quality welds with reduced setup time. The TIG function incorporates high-frequency start technology for clean arc initiation on aluminum and other metals, while the pulse TIG capability provides enhanced control for precision work on thinner materials. Stick welding performance rounds out the package with smooth arc characteristics and excellent electrode compatibility, making this machine genuinely capable across all three primary welding processes rather than compromising quality in favor of versatility. Built with dual voltage input capability, the PowerMTS 251si adapts to different power supply situations, functioning effectively on both 120V and 240V circuits depending on the welding demands at hand. This adaptability, combined with digital display readouts for precise amperage and voltage monitoring, gives users better control over their welding parameters throughout each project. Everlast has equipped this unit with a durable construction that withstands the rigors of regular use in demanding environments, while the overall feature set—including features like adjustable inductance and pulse settings—positions the PowerMTS 251si as a practical investment for anyone seeking a genuine all-in-one welding solution without sacrificing the quality output that professional-grade work requires.
The Everlast PowerMTS 251Si delivers solid multi-process versatility at a mid-range price point, making it a practical choice for hobbyists and small fabrication shops that need MIG, Stick, and TIG capability without investing in three separate machines. While it isn't loaded with premium features found in top-tier industrial welders, its reliable inverter performance and dual voltage flexibility make it a smart, budget-conscious pick for varied welding tasks.
The full plate
As stated by the manufacturer, 5 lines.
| Max Output | 251A (MIG/Stick) |
|---|---|
| Input Voltage | 120V/240V dual voltage |
| Processes | MIG, Stick, TIG, Flux-Core |
| Duty Cycle | 60% at 200A |
| Weight | 55 lbs (25 kg) |
What holds up
- Versatile three-in-one welding process coverage
- Solid build quality typical of Everlast inverter units
- Good value compared to name-brand multi-process machines
- Dual voltage input adds flexibility for different power sources
- Digital readouts help dial in settings quickly
- Capable of handling both thin sheet metal and thicker steel
What costs you
- TIG mode lacks some advanced pulse features found in higher-end models
- Duty cycle drops noticeably at max amperage
- Customer support response times can be slow
- Includes only basic MIG gun, may need upgrade for heavy use
- Learning curve for beginners juggling multiple processes
- Fan runs loud under sustained heavy loads
Stated features
- Multi-process capability: MIG, Stick, TIG, and Flux-Core welding in one unit
- 251A max output on MIG/Stick, suitable for medium-duty fabrication and repair
- Dual voltage input (120V/240V) for flexible shop or field use
- Digital display for precise amperage and voltage control
- Synergic MIG control simplifies wire speed and voltage matching
- Spool gun ready for aluminum welding applications
- IGBT inverter technology for stable arc and portability
5 people who bought it
I've used this for both MIG and TIG work in my home shop and it handles both well. Switching between processes is straightforward once you get used to the settings.
Not as refined as my old Miller but does everything I need for farm repairs and small projects. The dual voltage input is a huge plus.
Works well overall, but the stock MIG gun is mediocre and I upgraded it quickly. TIG performance is decent for the price point though.
Welder itself performs fine but the fan is loud under heavy use, and I had to wait a while to get a response from customer support on a minor issue.
This machine covers all my bases—MIG for fast work, Stick for outdoor repairs, and TIG for precision jobs. Great value multi-process unit.
Three entries that sit next to it
Nearest standings in the ledger. Tick one to add it to the cross-reference sheet on the front page.
| 24 | WeldPro 155 Amp Inverter Welder Weldpro · Multi-Process & Stick | 155 A · 60% duty | 4.1 / 5 | B | ||
| 23 | Everlast PowerArc 160 Everlast · Multi-Process & Stick | 10–160 A · 60% duty | 4.3 / 5 | B | ||
| 26 | Forney Easy Weld 140 MP Multi-Process Welder Forney · Multi-Process & Stick | 30–140 A · 20% duty | 4.2 / 5 | C |
