If you need a budget MIG welder that runs on a standard wall outlet, the Longevity Migweld 140 belongs on your shortlist. But it is not the right pick for everyone, and this review explains exactly why.
The machine is affordable, yet it has clear strengths and clear weak points, so it pays to look at the full picture before you spend your money.
In this Longevity Migweld 140 review, you will learn about its power, package content, features, ease of use, and running costs, so you can decide whether it deserves a spot in your garage.
Longevity Migweld 140 Package Content & Technical Specifications
Affordable 140A MIG Welder For Home And Light Shop Work
- Longevity Migweld 140 welder
- MIG Torch with .030/.035 contact tips (3 m)
- Earth/Ground Clamp (3 m)
- Regulator Flow Gauge
- Gas Line
- 2 lb Spool of Mild Steel Wire
- Chipping Hammer, Steel Brush and Welding Mask
Technical Specifications
| Welding Process: | MIG / Flux-Cored (Spool Gun Capable) |
| Input Voltage: | 110V, 1-Phase, 50/60Hz |
| Max Output: | 140A |
| Current Range: | 25-140A |
| Stick Welding Capable: | NO |
| Rated Duty Cycle: | 20% @ 90A / 18V |
| Wire Diameter: | .025″-.030″ Solid / .030″-.035″ Flux-Cored |
| Max Spool Size: | 11 lb |
| Protection Degree: | IP21 |
| Insulation Grade: | F |
| Machine Weight: | 62 lbs |
| Machine Size: | 24″ x 13″ x 17″ |
Pros
- True 140A output from a standard 110V outlet
- Full-size 11 lb spool capacity
- Optional spool gun for aluminum welding
- Manual wire-speed and voltage control
- Tweco-style torch uses universal consumables
Cons
- 20% duty cycle at 90A is modest
- 62 lb boxed weight limits portability
- Included welding mask is basic
- No stick welding capability
- Only .030u0026quot;-.035u0026quot; flux-cored wire support
Longevity Migweld 140 Performance, Features And Value
Longevity Migweld 140 is a MIG welder that supports MIG (GMAW) and flux-core (FCAW) welding, the type most home users look for in a compact machine. It operates on a standard 110-volt household outlet, so you can easily connect it in a garage or shop, which makes it easier for a beginner or DIY user to get started. From what I can tell, this MIG welding machine is aimed at beginners and people looking to get something on the cheaper end because they don’t need to do serious work with it. It has a decent amount of power and a duty cycle that is usually found in this price range.
Longevity Migweld 140 Power And Duty Cycle
The Longevity Migweld 140 has an excellent power output considering that it is meant for use with a 110V wall outlet. It will provide you with a maximum output of 140 amp, and it will weld mild steel up to 1/4″ thickness. For reference, Longevity’s own product page lists eleven owner reviews with a 98 percent average rating, so the first buyers are happy with what the machine puts out.
The duty cycle is where it missed an opportunity to shine. It offers a 20% duty cycle at 90 amps. That is serviceable, but it would round out this machine’s whole power element and would be much better if it had around 35-40%, since more welding time before cooldown would improve productivity.
Regardless, it is still a reliable machine when it comes to power and especially considering the safety feature for thermal overload protection. If you overdo it, the machine will shut itself off so that any damage is avoided. This is good for beginner welders that don’t really pay attention to the duty cycle yet, and it is still powerful enough for its class.
Features And Accessories
If there is one thing you should consider from this Longevity Migweld 140 review, that would be the features of the machine.
How about a full metal wire feed system. There are only a handful of welders on the market at this price point that have a quality wire feed like this one.
The Migweld 140 has an easy to set wire system that lets you fine tune the setup for the wire being used and allows for proper flux core wire and regular steel wire use with confidence and ease. It has support for an optional spool gun so that you can also weld aluminum, and this setup helps prevent the feed issues that often come with aluminum welding. Many cheap welding machines skip out on this effectively, not providing beginners a chance to try working on aluminum.
This longevity welder can accommodate up to an 11 lb spool, which is more than enough for any smaller jobs that this welder is meant for. It is also quick to change over between wire types and spool setups, which is a nice convenience for this price point.
Besides the Longevity welder itself, the package contains a lot of good quality parts. The MIG gun, which uses a “tweco” style connector, is of high quality, and so is the ground clamp. A spool gun is optional.
It comes with a quality gas input hose that actually has threads on both ends so that you can screw it in place instead of using cheap solutions that require the use of hose clamps.
It also comes with a decent gas regulator that is on the cheaper end but in line with the welder price. The box also includes a 2 lb spool of mild steel welding wire.
The rest of the items that you get are the chipping hammer, a basic welding mask that you will probably want to upgrade, a set of contact tips, and a few other bits and pieces. These consumables are common sizes you can find in local tool stores, so replacements are easy to get.
Ease Of Use And Running Cost
This Longevity 140 MIG welder is easy to use and set up, and straightforward to operate for a beginner, whether we are talking about flux-cored welding or a regular MIG setup.
It is as easy to set up as others in its market range, so I won’t really talk much about it. You plug your MIG gun and the ground clamp inside the welder. Changing the polarity is simple, the spool is easy to attach, and the wire can easily be fed through the system of the product.
The machine itself weighs about 54 pounds, and the shipped box comes in at 62 pounds, so this is not the most portable machine in its class.
What I do love is the fact that you can manually adjust the wire speed. This is where it sets itself apart from the competition and is one of the reasons to buy it. This can be very helpful for work, and while many cheaper machines want you to use their automatic wire speeds, you can actually set it yourself with the Longevity.
When it comes to deciding if you want to buy it or not, the cost will play a significant role. Longevity sells the Migweld 140 direct at $449.99 with free shipping, while the Eastwood MIG 140, its closest rival, can often be found under $400. If you are shopping in this price bracket, our best MIG welder under $500
The good thing is that Longevity offers a one-year warranty on parts and labor, which further makes them a value choice, all things considered.
Frequently Asked Questions [F.A.Q]
Can the Longevity Migweld 140 weld aluminum?
Not out of the box. The machine is spool gun capable, and Longevity sells the optional SpoolGun 140 that runs a 1 lb aluminum spool. That is the practical way to weld aluminum with this unit, because a spool gun avoids the wire-feed problems you get when soft aluminum wire is pushed through the standard MIG lead. If anything goes wrong, the one-year parts and labor warranty has you covered.
What is the duty cycle of the Migweld 140?
The rated duty cycle is 20% at 90A and 18V, which is typical for budget 110V MIG welders. If you exceed it, the thermal overload protection shuts the machine down until it cools, so you cannot damage the unit by overworking it.
Can it weld without shielding gas?
Yes. The Migweld 140 supports MIG with shielding gas using .025″-.030″ solid steel wire, and flux-core using .030″-.035″ flux core wire without gas. That setup flexibility makes it easier for home users who may switch between jobs.
How thick can the Longevity Migweld 140 weld?
On mild steel, the official working range is 24 gauge up to 1/4″ plate. That covers most garage, repair, and light fabrication work this class of machine is built for.
Conclusion
As you may have noticed, the entire review of Longevity Migweld 140 kept a focus on the cost and value provided. It is a budget welder, and it sure welds as it is expected. But it goes further than that, and if you think about all of the features that it offers, from the ability to flux core weld without gas and the quality wire drive, you will see that this is a quality MIG welding machine.
Common consumables are easy to find, which keeps day-to-day ownership simple.
Sure, when compared with machines like from Hobart, it may look a bit inferior, but it is also much cheaper. The weight issue is the only bigger downside that I see as this welder welds quite well while offering a bunch of useful features and coming out of the box with quality accessories, making it a good fit for garage and DIY users who want solid value without stepping up to a more powerful class.
