Longevity MIGWeld 140 Review

LONGEVITY Migweld 140

A portable welder that provides users with enough power to take on a variety of jobs, the Longevity MIGWeld 140 is easy to use, being a suitable option for professionals and amateurs alike. Featuring clear controls that make it easy to learn, as well as a wide variety of functions, this welder greatly cuts down on the number of machines you need.

Manufactured by Longevity, a worldwide brand trusted by construction companies, manufacturing companies, welding instructors, and more, the Longevity MIGWeld 140 brings quality results to the automotive enthusiast and home hobbyist.


Who Is It Suitable For?

The Longevity MIGWeld 140 is an excellent choice for those who want a rather inexpensive welder that is highly portable so they can use it at home or in a shop. Even though it is not suitable for industrial use, the welder does a good job on the occasional heavy job. Examples of jobs the Longevity MIGWeld 140 can tackle include ornamental gates, BBQ pits, hot rods, motorcycles, furniture, and more.

The machine is compatible with most consumables you can find in brick and mortar shops and can tackle a wide range of aluminum thicknesses. A popular choice among repair welders and hobbyists alike, the Longevity MIGWeld 140 runs on a standard 110v outlet power, providing users with the convenience of being able to use it just about anywhere.

portable MIG welder

Features and Specifications

With a weight of only 54 pounds, the Longevity MIGWeld 140 is easy to transport from one job to another. Because it is compatible with 110v outlets, users can set up the machine in just a couple of minutes. The welder can hold up to 11 lbs. spool, so users can use it to weld with or without gas.

The welding capacity of the Longevity MIGWeld 140 is up to 3/8-inch mild steel and the machine runs on gas or flux-core. The machine is particularly accurate with metals around 1/8 inch thick.

The machine allows users to weld aluminum with an optional spool gun. As it features thermal overload protection, the machine protects users from damage by cooling down if in use for a prolonged period of time or if the duty cycle limit is reached.

The MIGWeld comes with Tweco® style connectors, so users can easily swap torches with any kinds of guns they prefer. The total box weight of the machine is 54 lbs. The welding amperage range of the machine is 25 to 140 Amps, and the duty cycle is 20% at 90 Amps. The machine includes a torch, and its dimensions are 25-inch D x 18-inch H x 13-inch W.

Related: Mig Welder Reviews

Portability and Ease of Use

Highly portable at just 40 lbs, the Longevity MIGWeld 140 allows users to transport it without trouble. Lifting and moving the machine around is not difficult thanks to the lightweight design for a welder, and the machine has a handle for easier transportation.

The machine is easy to setup thanks to the supplied plug, and the dedicated panel means that users can see all the settings at a glance. Users can fine tune the welder to their preferred settings with just a couple of moves so that they obtain accurate and fast results every time. The machine comes with settings for wire speed and arc volts, among others.

As it runs on .025 and .035 diameter wire, the Longevity MIGWeld 140 is a suitable option for welding metals with different thicknesses. Even though it is not a suitable choice for daily professional use, the welder provides the user with quality occasional work.



The Longevity MIGWeld 140 comes with multiple accessories in the box, so users can make the most out of the machine’s functions right away. Accessories include:

MIG Torch with contact tips (3 meters)

Regulator flow gauge

Earth/ground clamp (3 meters)

Chipping hammer and steel brush

030 and .035 contact tips

Gas line

2 lb Spool of mild steel

Welding mask

Users can opt to add other accessories as well at an extra cost, and these include a spool gun 140, Welding Armor gloves, and MIGWeld 140 contact tips.


The Good

  • The Longevity MIGWeld 140 welder is easy to setup
  • Suitable welding machine for hobbyists and amateurs
  • Value for money machine that is inexpensive yet still does an excellent job on a wide range of products
  • Works with domestic power outlets
  • Has overload protection for extensive use situations.
  • Extremely portable, which makes the machine a good choice for a work in the field and repair jobs.
  • The machine works with or without gas, which makes it highly versatile for the price.


The Bad


  • The machine only comes with solid wire, so users need to buy flux cored separately
  • It sometimes takes a couple of passes to weld 3/8 inch steel.


The Longevity MIGWeld 140 comes with a standard three-year warranty that covers both parts and labor. This means that the machine has a longer warranty than those provided by some other brands for similar items. Due to this fact, the machine is a good choice for those who want peace of mind for their welder.


This item is available for sale on Amazon.

LONGEVITY Migweld 140 Welder Review
  • MIG Welder Review


An excellent value for money machine that gets quality work done despite a couple of glitches, the Longevity MIGWeld 140 delivers excellent results for amateur and hobbyist welders, but it is not really suitable for heavy professional use. The superior warranty and high portability of the machine make it a good purchase for those who want to have a welder at hand for occasional use for years to come.