The best TIG welders for aluminum

Aluminum needs AC, and amps that hold up long enough to finish a bead. We compared 12 AC/DC TIG welders on what their makers publish and what owners report.

Updated October 21, 2026

In this guide

The short answer
How they compare
What matters for aluminum
The picks
Also considered
What else you'll need
Quick answers
Sources

AHP AlphaTIG 225XiBest for most garages. 200 A at 60% duty, and the highest output rated at 60% duty on 120 V.Check price at Amazon
PrimeWeld TIG225XBest-supported value. Owners praise the service, and a CK torch is offered at checkout.Check price at Amazon
Everlast Typhoon 230Best for thick aluminum, if you add a water cooler. Rated for 200 A nonstop.Check price at Amazon
Lotos TIG200ACDCBest on a budget. 60% duty at 190 A at 40 °C, and the pedal is in the box.Check price at Amazon
Miller Multimatic 220 AC/DCBest if you also MIG weld. One machine for MIG, stick and AC/DC TIG.Check price at Amazon

How they compare

Duty cycle is how much of a 10-minute period a machine can weld at that current before it has to cool. A red underlined value is the best in its column. A small letter next to a number means it isn't measured the same way as the rest; tap it to read the note.

Specifications of 12 AC/DC TIG welders
Rank	Machine	Max TIG amps 240 V / 120 V	Rated TIG duty cycle near 200 A (240 V)	AC balance (% cleaning)	AC frequency	Warranty	Foot pedal
1	AHP AlphaTIG 225Xi	225 / 150 A	60% at 200 A	10–90% (widest, tied)	20–200 Hz	3 yr	Included
2	PrimeWeld TIG225X	225 / 140 A	40% at 225 A, 60% at 183 A^a	10–90% (widest, tied)^b	40–200 Hz	3 yr	Included
3	Everlast Typhoon 230	230 / 125 A	100% at 200 A (best, tied)^c	5–70%	20–400 Hz (best)	5 yr (best, tied)	Included
4	Lotos TIG200ACDC	200 / not stated	60% at 190 A (220 V)	Knob −5 to +5, no %	Not adjustable	3 yr (manual: 1 yr)	Included
5	Miller Multimatic 220 AC/DC	210 / 140 A	20% at 210 A^d	20–40%^e	60–150 Hz	3 yr	Included
	Everlast PowerTIG 200DV	200 / 125 A	60% at 200 A	20–80%	20–250 Hz	5 yr (best, tied)	Included
	Everlast PowerTIG 250EX	250 (best) / none (240 V only)	100% at 200 A (best, tied)	10–90% (widest, tied)	20–250 Hz	5 yr (best, tied)	Included
	Lincoln Square Wave 205	205 (230 V) / 110 A AC	25% at 205 A, 60% at 160 A^d	10–40%^e	50–160 Hz	3 yr	Included
	Eastwood Elite TIG 225	225 / 120 A	20% at 225 A, 60% at 130 A^d	20–80%	40–200 Hz	3 yr	Included
	YesWelder TIG-200P ACDC PRO	200 / 140 A	60% or 30% at 200 A^f	15–50%	40–250 Hz	2 yr	Sold separately
	ArcCaptain TIG200P AC/DC	200 / 120 A	25% at 200 A^d	20–60%^b	20–250 Hz	5 yr (core parts)	Sold separately
	VEVOR TIG-225	225 / 160 A (best)	20% at 225 A	"Clean width" 30–80, unlabeled	20–200 (units not printed)	1 yr	On/off only

Notes on these numbers

a Rated at 25 °C, an easier test than the usual 40 °C, so this figure looks better than the others.
b The maker doesn't say which half of the AC cycle the percentage measures, so it may not compare directly.
c The 100% figure appears only on Everlast's product page; the manual gives 70% at 230 A.
d The maker doesn't state the test temperature.
e The maker states balance as % electrode-negative (Lincoln says so; Miller's manual implies it). We converted it to % cleaning.
f The maker's figures conflict: the manual says 60%, YesWelder's product page says 30%.

↑ Back to table

What matters for aluminum

AC output

Aluminum's oxide skin has to be broken by the electrode-positive half of an AC cycle. A DC-only TIG can't weld it.⁠^[39]

Amps at a usable duty cycle

Eastwood's chart puts 1/16" aluminum at 55–75 A AC and 3/16" at 125–180 A AC.⁠^[29] Check the duty cycle at the amps you'll use, not just the maximum.

Your outlet

On a 120 V outlet most of these machines give 110–160 A. AHP and Everlast both rate single-pass aluminum on 120 V at 1/8".⁠^{[1, 10]} Thicker plate needs 240 V.

Balance and frequency

Balance trades oxide cleaning against penetration; frequency narrows or widens the arc.⁠^[39] Makers state balance differently, so we converted every range to "% cleaning" where we could.

The picks

Best for most garages

1. AHP AlphaTIG 225Xi

The strongest all-round package for a garage: real 200 A capacity on 240 V, and the highest rated output on a household outlet: 150 A at 60% duty.

The AlphaTIG holds 200 A for six minutes out of ten at a 40 °C rating, and on 120 V it reaches 150 A, rated at 60% duty.⁠^[2] Its balance range (10–90% cleaning) is as wide as any machine here, with 20–200 Hz frequency and pulse on both AC and DC.⁠^{[1, 2]} AHP rates it for 5/16" aluminum in a single pass on 240 V.⁠^[1]

Good to know

Foot pedal and 26-series torch included⁠^{[1, 2]}
240-to-120 V adapter in the box⁠^[2]

Watch out

Sold as a pre-order, shipping est. November 20, 2026⁠^[1]
On 120 V it may trip a 20 A breaker, the manual warns⁠^[2]
Buyers comparing it with the PrimeWeld rate PrimeWeld's CK torch higher⁠^[3]

Last I checked, the lead time on the alphatig was about a month.
Buyer comparing it with the PrimeWeld on r/Welding [3]

225 Amax on 240 V

60%duty at 200 A, 40 °C

150 Amax on 120 V

3 yrwarranty

Check price at Amazon Or buy from AHP

Best-supported value

2. PrimeWeld TIG225X

Nearly the AHP's specs, a choice of CK torches, and the most consistent owner praise for support of any machine we researched.

PrimeWeld lets you choose the CK Worldwide torch at checkout, and owners say it's a big part of why they chose this machine over the AHP.⁠^{[4, 8]} Balance runs 10–90% and frequency 40–200 Hz.⁠^[5] Read the duty cycle carefully: PrimeWeld rates it at 25 °C, while most makers here use 40 °C, so its 60% at 183 A isn't directly comparable.⁠^[5]

Good to know

Owners report PrimeWeld replacing faulty units under warranty⁠^[7]
A 2026 revision adds a digital panel and a fan that runs only when needed⁠^[6]

Watch out

Older units: loud fans that always run⁠^[8]
The CK17 torch option is rated 150 A; for thicker aluminum, owners move to a CK26 (200 A) or a water-cooled torch⁠^{[4, 9]}
The manual calls for a 50 A breaker on 220 V⁠^[5]

Mine died the second time I used it, but their guy Mike was on top of it.
Owner on WeldingWeb [7]

225 Amax on 240 V

60%duty at 183 A, 25 °C

140 Amax on 120 V

3 yrwarranty

Check price at Amazon Or buy from PrimeWeld

Best for thick aluminum

3. Everlast Typhoon 230

The machine to buy for long welds on heavy aluminum, and the most AC control of anything here. Budget for a water cooler: heavy work needs one.

The Typhoon is rated at 70% duty at its full 230 A, and Everlast's product page lists 100% at 200 A.⁠^{[10, 11]} It offers five AC waveforms, 5–70% balance and 20–400 Hz frequency.⁠^{[11, 12]} Two torches come in the box, but the air-cooled one is rated only 90 A on AC at 60% duty, so heavy aluminum needs the water-cooled torch and a cooler that isn't included.⁠^[11] Everlast rates it for 5/16" aluminum in a single pass on 240 V.⁠^[10]

Good to know

Warranty transfers to a second owner⁠^[12]
Works on 120 V too, up to 125 A⁠^[11]

Watch out

Heavy: 65 lb per the manual, 58 lb on Everlast's site⁠^{[10, 11]}
One production shop's unit stopped arcing in under a year⁠^[13]

one thing about the machine though, the fans are loud.
Shop owner who ran one daily, on r/Welding [13]

230 Amax on 240 V

70%duty at 230 A, 40 °C

20–400 HzAC frequency

5 yrwarranty, transferable

Check price at Amazon Or buy from Everlast

Best on a budget

4. Lotos TIG200ACDC

Bare-bones controls, but the clearest duty rating of the low-cost machines, with the pedal included.

Lotos rates the TIG200ACDC at 60% duty at 190 A at 40 °C.⁠^[15] The other budget machines are harder to read: VEVOR's 60% at 195 A is at 20–25 °C, ArcCaptain gives only 25% at 200 A with no conditions, and YesWelder's own figures conflict.⁠^{[30, 31, 33, 36]} The trade-off is control: there's no AC frequency setting, the balance knob has no percentages, and there's no pulse.⁠^[15]

Good to know

Foot pedal and argon regulator included⁠^[14]
Runs on a 20 A breaker on 110 V⁠^[15]

Watch out

Nonstandard control names: balance is labeled "Clearance Effect"⁠^[15]
Owners call the stock torch handle bulky⁠^[16]
Warranty: 3 years on the store page, 1 year in the manual⁠^{[14, 15]}

It just works, welds accurately and is a much better welder than its operator.
Owner on HomemadeTools.net [16]

200 Amax on 220 V

60%duty at 190 A, 40 °C

140 Aat 60% duty on 110 V

58 lbweight

Check price at Amazon Or buy from Lotos

Best if you also MIG weld

5. Miller Multimatic 220 AC/DC

One machine for MIG, flux core, stick and AC/DC TIG from a major brand. Its AC TIG is the weakest of the picks.

If you'd otherwise buy a MIG welder and a TIG welder, this replaces both. Miller lists it for steel and aluminum from 24 gauge to 1/4" on AC/DC TIG.⁠^[18] For aluminum alone it gives up a lot: 20% duty at 210 A, a narrow balance range (about 20–40% cleaning), 60–150 Hz, and pulse on DC only.⁠^{[18, 19]}

Good to know

Plugs for 240 V and 120 V both included⁠^[18]
Foot pedal and TIG torch included⁠^[17]

Watch out

Miller's manual gives two different 240 V duty cycles (15% and 20%)⁠^[19]
140 A on 120 V needs a 20 A circuit and an optional plug; on the included 15 A plug it's closer to 90 A⁠^[18]
A fault takes every process down at once⁠^[20]

its a real cool machine that can easily be transported. it has a great mig arc as well.
Owner who uses it as a second machine, on WeldingWeb [21]

210 Amax TIG on 240 V

20%duty at 210 A

140 ATIG on 120 V, 20 A circuit

3 yrwarranty

Check price at Amazon See it at Miller

Also considered

We researched seven more machines the same way. Each is a real option: here's what it does well, why it isn't one of our five, and when it might still suit you.

Everlast PowerTIG 200DV
Does well
60% duty at 200 A at 40 °C, pulse on AC and DC, and a 5-year warranty.⁠^{[22, 23]}
Not a pick because
It gives 125 A on 120 V to the AHP's 150 A, and its manual limits the stock torch to 175 A on AC.⁠^[23]
Consider it if
You'd rather have the longer warranty than the extra output on a household outlet.
Everlast PowerTIG 250EX
Does well
100% duty at 200 A, a 10–90% balance range and pulse up to 500 Hz.⁠^{[24, 25]}
Not a pick because
It ships with a water-cooled torch and no cooler, and the manual says the torch must not run without one. It also needs 240 V.⁠^[25]
Consider it if
You already own a TIG water cooler and have a 240 V circuit.
Lincoln Square Wave 205
Does well
A 36 lb machine from a major brand, sold through local distributors, with a 3-year warranty.⁠^{[26, 27]}
Not a pick because
25% duty at 205 A and 60% at 160 A, and a narrow balance range (about 10–40% cleaning).⁠^[27]
Consider it if
Having a dealer nearby matters more to you than output.
Eastwood Elite TIG 225
Does well
Light at 34 lb, with AC and DC pulse up to 200 Hz and a foot pedal in the box.⁠^{[28, 29]}
Not a pick because
Only 20% duty at 225 A and 60% at 130 A on 240 V.⁠^[29]
Consider it if
You mostly weld thin aluminum; Eastwood's own chart puts 1/16" at 55–75 A.⁠^[29]
YesWelder TIG-200P ACDC PRO
Does well
The lightest machine here at 19.6 lb, with AC pulse and 40–250 Hz frequency.⁠^{[30, 31]}
Not a pick because
Its manual (60%) and product page (30%) disagree on duty at 200 A, the foot pedal costs extra, and the warranty is 2 years.⁠^{[30, 31]}
Consider it if
Carrying the machine around matters most.
ArcCaptain TIG200P AC/DC
Does well
26.5 lb, with AC pulse and a 5-year warranty on core components.⁠^{[32, 33]}
Not a pick because
It publishes a single duty figure, 25% at 200 A, with no voltage or temperature, and the foot pedal costs extra.⁠^{[32, 33]}
Consider it if
Weight and warranty length matter more to you than published ratings.
VEVOR TIG-225
Does well
160 A on 120 V, the most of any machine here, with AC and DC pulse.⁠^{[34, 35]}
Not a pick because
20% duty at 225 A and a 12-month warranty, and owners report the included pedal only switches the arc on and off.⁠^{[34, 37, 38]}
Consider it if
You want to try AC TIG before committing to a bigger machine.

What else you'll need

Item	Why	With the picks
Foot pedal	Varies amps while you weld; most aluminum TIG work relies on it	Included with all five
Argon cylinder	Shielding gas for TIG	Not included with any
Gas regulator	Sets gas flow from the cylinder	Included with the Lotos and the Miller; check the listing for the others
Water cooler	Only for water-cooled torches	Needed for heavy aluminum on the Typhoon, whose air-cooled torch is rated 90 A on AC; not included
A 240 V circuit	For anything thicker than about 1/8" aluminum	All five also run on 120 V at lower output

Quick answers

Will any TIG welder weld aluminum?

No. It needs AC output to break the oxide layer.⁠^[39] Check for "AC/DC" in the name; a "DC TIG" can't weld aluminum.

How thick can a 200-amp TIG weld aluminum?

AHP and Everlast rate their machines for 5/16" aluminum in a single pass on 240 V; Miller lists AC/DC TIG from 24 gauge to 1/4".⁠^{[1, 10, 18]} Thicker plate takes multiple passes.

Can I TIG weld aluminum on 120 V?

Yes, on thinner material. The picks give 125–150 A on 120 V, and AHP and Everlast rate single-pass aluminum at 1/8" there.⁠^{[1, 10]}

What's a good first TIG welder for aluminum?

The AHP AlphaTIG 225Xi if you can wait for it to ship, the PrimeWeld TIG225X if you want one now, or the Lotos TIG200ACDC on a tight budget.

Sources

AHP AlphaTIG 225Xi

AHP product page, AlphaTIG 225Xi, accessed Oct 20, 2026
AlphaTIG 225Xi operator's manual (Feb 2024)
r/Welding: PrimeWeld TIG225X vs AHP AlphaTIG thread

PrimeWeld TIG225X

Everlast Typhoon 230

Lotos TIG200ACDC

Lotos US store, TIG200ACDC, accessed Oct 20, 2026
Lotos TIG200 manual
HomemadeTools.net: Lotos TIG200 owner report (2019)

Miller Multimatic 220 AC/DC

Also considered

Everlast product page, PowerTIG 200DV, accessed Oct 20, 2026
PowerTIG 200DV guide (Apr 2024)
Everlast product page, PowerTIG 250EX, accessed Oct 20, 2026
PowerTIG 250EX guide (June 2024)
Lincoln product page, Square Wave 205 (K5613-1), accessed Oct 20, 2026
Square Wave 205 instruction manual IM10714 (May 2025)
Eastwood product page, Elite TIG 225, accessed Oct 20, 2026
Eastwood Elite TIG 225 operating instructions (Rev 2, 7/25)
YesWelder product page, TIG-200P ACDC PRO, accessed Oct 20, 2026
TIG-200P ACDC PRO manual V2.01
ArcCaptain product page, TIG200P AC/DC, accessed Oct 20, 2026
ArcCaptain TIG200P AC/DC user manual
VEVOR product page, 225 A AC/DC TIG, accessed Oct 20, 2026
VEVOR ACDC TIG-225 manual (third-party copy)
VEVOR Q&A on duty cycle, accessed Oct 20, 2026
VEVOR Canada listing, same product (warranty), accessed Oct 20, 2026
VEVOR customer reviews on vevor.com

Background

Eastwood: Why AC balance and frequency control matter on aluminum TIG, accessed Oct 20, 2026

The best TIG welders for aluminum

How they compare