Small stick welders with a TIG option are everywhere, but very few come from a brand that keeps a service network and a long warranty behind them.
The Everlast PowerArc 140STi is one of the exceptions: a 140 amp IGBT inverter built on individual IGBT switches, running on 120 or 240 volts and ships as a complete kit inside its own carry case. The PowerArc 140ST name covers the smallest of the Everlast stick machines, and the 140STi is the version sold today.
At around 20 pounds, the PowerArc 140STi is built for maximum flexibility: repair work, farm jobs, and hobby shops where a full-size machine would be overkill. The 5 year parts and labor warranty is also longer than what most machines in this price class offer.
In this Everlast PowerArc 140STi review, we cover what you get in the box, how the machine performs, and which welder features matter, from the gas valve TIG torch to the rated duty cycle.
Everlast PowerArc 140STi Package Content & Technical Specifications
The PowerArc 140STi is a compact dual voltage Stick/Lift TIG welder built for repair work around the home and farm. Everlast ships it as a complete welding kit, and inside the impact resistant carry case you will find:
Compact 140A Stick/Lift TIG Welder
- PowerArc 140STi welder
- 17V TIG torch with gas valve and 12.5 ft cable (25 Dinse style connector)
- Stick electrode holder with 10 ft cable
- Work clamp with 10 ft cable
- Consumable starter kit (tungsten not included)
- 120V/240V power adapter
- Impact resistant carry case
Technical Specifications
| Welding Process: | Stick (SMAW) / Lift TIG (DC only) |
| Input Voltage: | 120/240V, 1-phase, 60 Hz |
| Input Amps (rated): | 120V: 18.3A / 240V: 15.7A |
| Output Range: | 10A – 140A DC |
| Max Output on 120V: | 80A TIG / 85A Stick |
| Rated Duty Cycle: | 140A @ 35% (104°F / 40°C) |
| Open Circuit Voltage: | 70V |
| TIG Start: | Lift start, 5A minimum |
| Arc Control: | Adjustable arc force + auto-adaptive hot start |
| Machine Weight: | 20 lbs (9 kg) |
| Machine Size: | 12″ × 5″ × 9″ |
| Warranty: | 5 years parts and labor |
Pros
- Runs on both 120V and 240V
- Full kit: TIG torch, electrode holder, ground clamp, case
- 5 year parts and labor warranty
- Light 20 lb package in a carry case
- Low 5A start for thin TIG work
Cons
- No gas regulator or solenoid included
- DC only TIG, no aluminum welding
- No foot pedal or remote control support
- Not rated for E6010 rods (E6011 only)
- Needs a 3500/6000W surge generator with clean power
Everlast PowerArc 140STi Performance
A spec sheet only takes you so far, so the more useful question is how the 140STi behaves once the rod is lit. The short version: for a 20 pound box it welds like a machine one class larger, as long as you respect what the welder is and is not.
We will break the hands-on part into three areas: Stick welding, the Lift TIG function, and what dual voltage means in daily use.
Stick Performance, Welding Arc Stability, and Arc Control
In Stick mode the 140STi holds steady arc quality from low amperage up to its 140 amp maximum on 240V. Arc force control is adjustable, so you can tune how the welder reacts when the arc shortens, and the auto adaptive hot start deals with hard to start welding electrodes without cooking thin material.
The maximum electrode diameter depends on rod type and brand, but 3/32 to 1/8 inch rods are the working range. Hot start strength and duration are both adjustable from 0 to 100%. The auto adaptive hot start also limits situations where rod sticking slows you down on dirty or painted steel.
On 120V power the largest diameter electrode you can run is 3/32 inch, and on 240V the maximum electrode diameter is 1/8 inch.
The rated duty cycle is 140A at 35%. In practice that means short high-amperage beads are fine, but long continuous passes at full power will eventually trip the thermal protection. For repair and hobby work this is rarely a limit. If you are still learning electrodes, our stick welding guide covers rod selection and the common mistakes.
Lift Start TIG on a Budget Machine
The TIG side is lift start DC only, down to 5 amps, which is enough to start TIG welding on thin steel and stainless sheet. That DC lift TIG capability makes it a usable TIG machine for repair work, not just a badge on the front panel.
DC TIG on steel and stainless is the whole scope here, and the torch plugs into the front panel with the same 25 Dinse connector as the stick torch. The included 17V TIG torch carries a gas valve on the handle, because the unit has no gas solenoid inside.
Skipping the gas solenoid keeps the price down, but it also means you open and close the gas at the torch yourself. You supply your own argon regulator too; a regulator with flowmeter is the standard accessory buyers add first. The torch is a standard 17 series TIG torch, so tungsten and consumables stay cheap and easy to find, and the same torch cable reaches most bench work.
The lift arc start on the TIG side also keeps tungsten contamination low compared to scratch starting.
Two limits are worth stating plainly. Welding aluminum is off the table because the DC output has no AC component, and there is no foot pedal or remote support at all. If the missing foot pedal or the DC-only output matters for your work, look at an AC/DC machine instead. Our AC vs DC welding article explains why aluminum needs AC.
Dual Voltage and Portability
The 240V dual voltage capability is where the 140STi delivers its full 140 amps. Plug the unit into 120V and you get up to 80 amps of TIG or 85 amps of Stick, which still covers 1/8 inch single pass TIG and, with multi pass welds, a practical limit of 1/4 inch steel.
Everlast specs the unit at 18.3 rated input amps on 120V and 15.7A on 240V, with a max inrush of 28.1A. On household power, that means a 20 amp outlet.
The unit also needs a generator rated for at least 3500 surge watts on 120V or 6000 on 240V, certified as a clean power source with no more than 5% total harmonic distortion.
Everlast lists a 10 ft work clamp cable and 12.5 ft torch cables in the box, so extension work needs extra cable length on hand.
At 20 pounds inside its carry case, the 140STi is a small unit that lives in the back of a van or on a shelf between jobs. The 120V 240V dual voltage design keeps it ready to go and weld virtually anywhere there is an outlet, and repair techs, HVAC contractors, and farm owners are exactly the buyers Everlast built this inverter welder for. That dual voltage capability lets one welder serve both garage and shop, which is where this unit earns its keep.
Frequently Asked Questions [F.A.Q]
Is there a gas regulator included with the PowerArc 140STi?
No, there is no gas regulator in the box. Everlast sells the argon regulator as optional equipment, and you may need a small additional fitting to connect the included TIG torch to the regulator.
What is the maximum output of the Everlast PowerArc 140STi?
The maximum is 140 amps on 240V power for both Stick and lift start TIG. On a 120V outlet the welder tops out at 80A in DC TIG and 85A in DC Stick.
Can the PowerArc 140STi weld aluminum?
Not with TIG, since the machine outputs DC only. For welding aluminum, the only option is Stick with special flux covered aluminum electrodes, and that process is limited compared to proper AC TIG welding.
Can you run the PowerArc 140STi on a generator?
Yes, but the generator must supply at least 3500 surge watts on 120V or 6000 on 240V and be certified as clean power, meaning no more than 5% total harmonic distortion. Damage caused by the wrong generator is not covered by the warranty.
Conclusion
The PowerArc 140STi is not trying to replace a shop welder or compete with commercial class machines. In the PowerArc 140ST family, the 140STi is the version you can actually buy today, and it is a compact, well-equipped IGBT inverter welder: a usable DC Lift TIG function with a full size TIG torch, a 5 year parts and labor warranty, and the whole accessory kit in the case. For hobby and repair work, the steady arc quality, arc force control, and hot start behavior earn it a recommendation. To see how Everlast compares with other makers on service and warranty terms, read our Best Welding Brands guide.
