Welder Generators

From £41.90 inc VAT From £34.92 ex VAT

Welder Generator

What is a welder generator?

Welder generators have an engine inside that produces electricity. The engine is powered by a fuel source, either diesel, petrol, or liquid propane (LPG). They can power TIG welders, MIG welders, grinders, plasma cutters, fume extraction systems as well as lights, tools, fans, and other equipment that requires electricity when there’s no available means of power supply. Welder generators are common and used by fabricators and metal workers, typically outdoors such as on construction sites but also indoors when the mains supply is not possible.

Welding processes

The most common is stick welding/shielded metal (SMAW), other machines will do TIG/gas tungsten (GTAW) as well. There’re some generators which will weld gas metal (GMAW) or flux cored (FCAW) using a MIG wire feeder.

AC or DC welder generators?

Direct current (DC) welder generators are preferred to alternating current (AC), the general assumption is that AC is cheaper than DC. AC is adequate for hobbyists whereas DC is more suited to professional welders plus it can weld different processes such as TIG, MIG and flux cored as well as any other equipment that needs electrical power including power tools and lights.

Welder generator compatibility

Always ensure that the generator you use can run the type of equipment you plan to power. For example, TIG welders aren’t compatible with all welder generators.

Welder generator output

It’s important not to exceed the maximum output of the generator. Different generators will have varying levels of power output and exceeding this would be dangerous. The more watts/amps a generator can power, generally the more expensive it will be.


If your welder generator doesn’t require frequent transportation to different locations, a heavier machine would be appropriate as it can be hauled into a trailer, van, or truck.

However, if it will be moving from site to site and relocated manually by hand, a lighter generator fitted with wheels and a protective cage would be optimal for ease of use and preventing damage.

Enclosed and tube frame welder generators

Tube frame welder generators are smaller, lighter, much more easily portable and some will come with handles. Although enclosed welder generators are bigger and heavier, they are more durable as it’s parts and components are not open to the environment like a tube frame that is more open to damage. Plus, it’s quieter as it’s enclosed and may have the added option of a wheel kit.

What to consider when buying a welder generator?

  • Fuel required - LPG, petrol, or diesel
  • Power type - AC or DC
  • Output range - the capacity of the welder generator in watts/amps
  • Application - the type of welding the generator supports
  • Weight - does it need to be portable
  • Duty cycle – a heavy duty machine is required when welding for extended periods of time

Which is Better? Petrol or Diesel: General Rule of Thumb

More affordable to buy Petrol
Lighter Petrol
Durability Diesel
More affordable to run Diesel

When it comes to cost, a petrol welder generator is typically cheaper to buy and is more easily portable due to its lighter weight. However, diesel generators are more economic and tend to be more durable.

Which is Better? Water Cooled or Air Cooled: General Rule of Thumb

Lighter Air cooled
Smaller Air cooled
Durability Water cooled
Higher duty cycle Water cooled

Although air cooled welder generators are more affordable, lighter, and more compact, water cooled machines are more powerful, have a longer life expectancy and can run for longer between welds. Air cooled welders are more suited to hobbyists.

Why purchase a welder generator from AES?

  • We are offering you a very reliable machine at an excellent price
  • All Genset machines are covered by a 12 month warranty
  • 2/3 year finance deals at unbeatable rates

What to consider when purchasing a welder generator

The number one priority for any serious buyer is to thoroughly do their homework on what components the manufacturer is using, and where they are sourcing those components from.

There are many manufacturers out there, many with powerful brand names, who in recent years are starting to source components from alternative cheaper sources. Genset is one of the few quality manufacturers of welding generators out there that is not making those changes.

They still use only use the highest quality engines in their complete range such as Honda for petrol engines, and a choice of the best diesel engines available on the market, such Kubota, Perkins, Ruggerini and Lombardini. The same principle applies when using all the other components, that will mean the difference of whether your welder generator lasts 20 years or maximum 18 months.

Need Technical Support? Call 0800 975 9710

© 2021 AES Industrial Supplies Limited

Company Registration: 07988136 Registered Office: Olympic House, Collett, Southmead Park, Didcot, Oxfordshire, United Kingdom, OX11 7WB


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