HTP Tig Welder

Transformers and inverters are both fairly efficient, and it is not likely that there would be a lot of difference in power usage from one welder to the next for a given type of opration. About the only welder design option is to control the fan so that it only comes on when the welder internals heat up. This will not amount to much power savings, but will cut down on noise.

You would have to weld for a living, or at least get out there every weekend, for the power usage of your welder to even be detectable on your household electric bill. As for power savings, the difference between an "efficient" welder and an "inefficient" welder might amount to only a few dollars a year, even for a full time fab shop.

I got to agree with David as the typical home shop would never see any savings to brag about.

In a production enviroment then you can save money on a welding process by tweeking that process to yield the best results with the least amount of heat input for a given joint design.

While Tig could be tweeked to yield the best input ratio of any process, if you condsider the extra welding time then your overall production yield costs would be more expensive using Tig than say using a Mig process.

T_Bone