Miller Millermatic 255 vs Miller Multimatic 235

Last updated: November 1, 2026

The Miller Multimatic 235 is the better MIG welder overall, rated 2.9 to 2.6. The Miller Multimatic 235 leads on processes and weight. The Miller Multimatic 235 costs $729 less ($3,623 vs $4,352).

Miller Millermatic 255 vs Miller Multimatic 235

Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every 240 V MIG welder; a clear win is highlighted. How we rank explains each one.

Factor weightMiller Multimatic 235Miller Millermatic 255
Overall rating2.9/52.6/5
Value 30%0 $15.42 per amp ($3,623, 235 A maximum)0 $12.43 per amp ($4,352, 350 A maximum)
Duty cycle 20%28 60% at 170 A, about 31% at full output15 60% at 230 A, about 26% at full output
Processes 15%100 MIG, flux-core, stick, lift TIG, takes a spool gun for aluminum60 MIG, flux-core, takes a spool gun for aluminum
Weight 10%79 63 lb60 84 lb
Warranty 25%50 3-year warranty on the machine50 3-year warranty on the machine

Specifications

Miller Multimatic 235Miller Millermatic 255
Output
Input voltage240 V240 V
Maximum output235 A350 A
Rated duty cycle60% at 170 A, 40 °C60% at 230 A, 40 °C
Thickest steel, one pass0.375 in0.5 in
InverterYesYes
Processes and wire
Gas MIGYesYes
StickYesNo
TIGLift TIGNo
Spool gun readyYesYes
Wire sizes0.024 to 0.045 in0.023 to 0.045 in
Synergic settingsYesYes
Build
Weight63 lb84 lb
Warranty3 years3 years
Released20202019-02

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