Longevity Migweld 140 Welder Review

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In Brief: Longevity Migweld 140 Review

The Longevity Migweld 140 welding machine makes it easy for beginners and advanced users alike to enjoy the convenience and simplicity of a portable MIG welder. This welding machine features 110V input power for easy household use and can be operated with an optional spool gun to handle aluminum.

The Longevity company began in 2005 and continues to supply welders with high-quality equipment today.

It provides welding machinery to customers looking for durable welders and plasma cutters that last.

The Longevity Migweld 140 welding machine makes professional-grade welds possible for beginners and home hobbyists.

This machine handles steel out of the box and can work with aluminum using an optional spool gun attachment for extra versatility.

Key Specifications of the Longevity Migweld 140

LONGEVITY Migweld 140-140 Amp Mig Welder Capable Of Flux-Core And Aluminum Gas Shielded Welding 110v

With the Longevity Migweld 140, welders enjoy convenient portable welding on the go.

This lightweight machine comes with plenty of accessories including a MIG gun, gauges, and work cable with a clamp to get you started right out of the box.

Check out the Longevity Migweld 140 in action here –


Read the long list of Longevity Migweld 140 specs below:

MIG, Flux Core
Rated Input Voltage
Rated Hz
Duty Cycle
20% @ 90A 18V
24 in. l x 13 in. w x 17 in. h
WarrantyCheck Manual
FeaturesSpool Gun Ready
Easy Setup
User-Friendly Design
AccessoriesMIG torch with tips
Ground cable and clamp
Regulator and flow gauge
Sample consumables
Chipping hammer and brush

Unique Features

With built-in safety features like thermal overload protection and auto post flow, this user-friendly welding machine provides plenty of capability in a compact size.

Thermal Overload Protection

Keep safe and prevent your machine from overheating with the built-in thermal overload protection on this device.

The product cools down automatically when you reach the duty cycle, shutting off until it can safely operate again.

Auto Post Flow

After you finish welding, this machine automatically sends gas to cool the torch and shield the puddle at the same time. This makes welding easier, safer, and cleaner, too.

User-Friendly Design

With the convenient control panel on this machine, users can dial in precise controls and get accurate results even without much experience.

Spool Gun Ready

Use an optional spool gun attachment with this welder to tackle projects involving aluminum.

Easy Setup

This welding machine features quick, easy setup and includes Tweco connectors for even faster switching between accessories.


Performance & Ease of Transportation

With sturdy inner workings and lightweight size, the Longevity Migweld 140 welding machine makes welding on the go convenient and simple for light to moderate household projects.


This welding machine holds up well to long-term use and provides a wide range for users to learn and enjoy.

It features durable internal components that last and runs smoothly in most instances.

Some customers do report issues with tangling in the wire drive.

Although this issue remains uncommon, it bears mentioning, especially for inexperienced users who may already have issues with wire tangling.

Overall, this machine provides high-quality performance results and exceptional durability. It makes welding easy and offers simple controls with a user-friendly design perfect for beginners.

Ease of Transportation

At 62 pounds, this welder remains light enough to lift and carry but not as portable as some competitors.

With that said, however, it fits onto most utility carts with ease and wheels around garages and home hobby setups with no trouble.

Customers enjoy using this portable welder thanks to its 110V input voltage. This feature makes the welder easy to plug into almost any household outlet and use nearly anywhere.


Weld Quality and Available Options

The Longevity Migweld 140 welder makes it easy to create exception welding results, even without experience.

It includes a welding guide on the inside cover of the device for quick and easy reference, and the recommendations match up to the best options for most welds.

Users enjoy smooth welds from this machine whether using MIG or flux core welding. The machine runs hot enough to create solid results and provides high outputs for impressive professional-grade seams.

This welding machine comes in just one option. Customers may choose to add the following:

  • Extra flux core wire: With more flux core wire, you can flux core weld as often as you like with this machine.
  • Gas setup: The machine comes with a regulator but requires the rest of a gas setup to work as a MIG welder.
  • Spool gun: Attach a spool gun for convenient aluminum MIG welding.

Ease of Maintenance, Repairs & Warranty

The Longevity company web site provides some replacement parts for welding machines.

These parts include regulators, cables, clamps, foot pedals, and other accessories, but do not include internal replacement parts.

Customers should refrain from trying to repair or replace the internal components of this welding machine. Only a licensed professional should handle this type of repair.

Perform regular maintenance on this machine. Before maintenance, unplug the machine and leave it off for 30 minutes to allow it to discharge. This will prevent the risk of electric shock while working on its parts.

Use compressed air to clean the vents every 1 to 3 months as needed. At the same time, check connectors, cables, and consumables, and replace any that show signs of wear or damage.

The Longevity company provides a limited warranty on this welding machine. This warranty covers one year of parts and labor for the welding machine itself. The warranty also includes six months of parts and labor on the MIG gun.

Additional accessories and consumables do not receive a warranty from this company. Customers may purchase an additional extended warranty if desired.

Contact the Longevity company’s customer service at 877.566.4462 for more warranty information.


Is the drive system on the Longevity Migweld 140 made of plastic or metal?

The drive system on this welding machine features a sturdy cast aluminum construction.

Do you need to buy any additional equipment to flux core weld on the Longevity Migweld 140?

No. You will need to purchase additional flux core wire, but the machine includes everything else you need for both MIG and flux core options.

What kind of gas do you need to run the Longevity Migweld 140 welder?

With flux core welding, this machine runs without gas. Otherwise, you need a mixture of CO2 and argon for most MIG welding. Use 100% argon for aluminum MIG welding.

What size generator do you need to run the Longevity Migweld 140 welder?

This machine runs on a generator that provides 11kw.

Price of the Longevity Migweld 140

Compared to other portable MIG welding machines, this product comes in at a competitive price point. It costs about the same as many competitors and is somewhat more budget-friendly than others.

Because the machine features a durable design and comes with plenty of accessories, its value remains higher than its price.

Many customers feel the price offers a reasonable entry-level way to enjoy a quality welding machine on a budget.


Who Should Buy the Longevity Migweld 140?

The Longevity Migweld 140 works great for beginners. This machine provides simple user-friendly controls with a wide margin of error so even the most inexperienced users can enjoy working with it.

Thanks to its portable size, this welder also makes it easy to weld on the go. Users of any skill level enjoy working with this product because of its convenient size and useful built-in features.

This machine provides plenty of welding capabilities for home hobbyists and DIYers.

It also makes metal art easier for those who work with steel and aluminum. For residential welding, this machine remains an excellent choice.

Our Recommendation

The Longevity Migweld 140 MIG welder combines durability and high-quality performance with a convenient shape and size.

The result makes welding accessible for beginners and provides precision portable welding to more advanced users.

We recommend this welding machine for beginners interested in learning to MIG weld. We also recommend it for home hobbyists and DIYers who need a portable option, regardless of skill level.

Last update on 2024-06-14 / Affiliate links / Images from Amazon Product Advertising API

About Donald Parker

Donald has more than 15 years of experience of working with power tools. But his main area of expertise is working saws, especially chainsaws.

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