Best TIG Welder for Aluminum: 6 AC/DC Picks for the Home Shop
Six AC/DC TIG welders for aluminum, compared on rated aluminum thickness, output on 110V, AC controls, foot pedal and what ships in the box.
By WeldGearLab Editorial
Updated October 4, 2026
This guide is for home shop, boat and auto restoration welders who need to TIG weld aluminum, which means an AC/DC machine: aluminum needs AC output to break up its oxide layer. Every pick here offers AC TIG with pulse on 110V and 220V input, and we compared them on rated aluminum thickness, output on 110V, AC controls, foot pedal and what ships in the box.
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Quick picks
- Best Overall PrimeWeld TIG225X: A CK Worldwide 17 series flex torch and Dinse connector, rated to 1/4 inch aluminum, with the most owner ratings in the sample. Check price
- Best Stated Duty Cycle Weldpro 200A AC/DC: The only duty cycle in this guide, 40% at 200A, with a foot pedal in the box and 0.5 to 200 Hz pulse. Check price
- Best for a 120V Garage LOTOS TIG220ACDCP: States its output on each input, 220A on 240V and 140A on 120V, with three AC waveforms and 20 to 80% balance. Check price
- Best Budget Kit PUWU TIG-180ACDC: WP-17 torch, argon regulator and two gas hoses in the box, the lowest price here. Check price
Compare the picks
| Model | Gear Score | Max output | 110V output | Aluminum rating | Foot pedal | Weight | Warranty |
|---|---|---|---|---|---|---|---|
| PrimeWeld TIG225X | 58 | 225A | Not stated | 1/4 in | Listed (inclusion not clear) | Not reliably stated | Not stated |
| LOTOS TIG220ACDCP | 56 | 220A on 240V | 140A | 3/8 in | Sold separately (FP06) | 26.9 lb | Not stated |
| Weldpro 200A AC/DC | 55 | 200A | Not stated | Not stated | Included | Not stated | Not stated |
| PUWU TIG-180ACDC PRO | 51 | 180A | Not stated | Not stated | Not listed | 28.6 lb | Not stated |
| Bestarc TIG215P ACDC | 50 | 215A | Not stated | Not stated | Included | 48.3 lb | Not stated |
| TOOLIOM TIG-200 TP | 47 | 200A | Not stated | 1/8 in on 110V, 3/16 in on 220V | Sold separately | 27.9 lb | Not stated |
Specifications are manufacturer rated, as published on each listing and collected 4 October 2026. Where a listing gives no figure, the table says not stated.
The picks
| Award | Product | LAT Score About the Gear ScoreThe LAT Score is our own rating from 0 to 10, based on performance, design and build, ease of use, and value. It reflects independent research and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
PRIMEWELD TIG225X 225 Amp IGBT AC DC Tig/Stick
|
58/100 | Buy | |
LOTOS TIG220ACDCP 220A AC/DC TIG Stick Welder
|
56/100 | Buy | |
Weldpro 200A AC/DC TIG Welder with Pulse
|
55/100 | Buy | |
180Amp AC/DC Aluminum TIG Welder with Pulse
|
51/100 | Buy | |
Bestarc TIG Welder AC/DC
|
50/100 | Buy | |
TOOLIOM 6-in-1 AC/DC TIG Welder with Pulse
|
47/100 | Buy |
PRIMEWELD TIG225X 225 Amp IGBT AC DC Tig/Stick
A 225A AC/DC pulse TIG and stick welder with a CK Worldwide flex torch, rated to 1/4 inch aluminum, and the most owner ratings in this guide.
Pros
- CK Worldwide 17 series Superflex torch with flex head and Superflex hose
- CK Dinse connector, listed as USA made
- Rated to 1/4 inch aluminum and 3/8 inch mild steel
- Pulse frequency and AC frequency up to 200 Hz
Cons
- No warranty term in the listing
- No duty cycle rating in the listing
- No output figure for 110V input
- The table weight of 40,823 g and a 1500 ml capacity field look like data entry errors
LOTOS TIG220ACDCP 220A AC/DC TIG Stick Welder
A 220A AC/DC pulse TIG with three AC waveforms, output stated for both inputs and the highest aluminum rating here.
Pros
- States output on each input: 220A on 240V, 140A on 120V
- Square, sine and triangle AC waveforms, AC balance from 20 to 80%
- Rated to 3/8 inch aluminum or steel on 240V
- 10 memory profiles, HF or Lift start
Cons
- No warranty term in the listing
- No duty cycle rating in the listing
- Foot pedal sold separately
- Few owner ratings so far
Weldpro 200A AC/DC TIG Welder with Pulse
A 200A AC/DC pulse TIG and stick welder with a foot pedal in the box and the only stated duty cycle in this guide, 40% at 200A.
Pros
- States a 40% duty cycle at 200A
- Foot pedal included
- Adjustable AC balance and frequency, pulse from 0.5 to 200 Hz
- Automatic 110V and 220V detection
Cons
- No warranty term in the listing
- No weight, dimensions or specification table in the listing
- No aluminum thickness rating
- Duty cycle does not say which input voltage it applies to
180Amp AC/DC Aluminum TIG Welder with Pulse
The lowest priced machine here, a 180A AC/DC pulse TIG and stick welder with an argon regulator and WP-17 torch in the box.
Pros
- Argon regulator and two gas hoses in the box
- WP-17 TIG torch, electrode holder and work clamp included
- AC, DC, AC pulse, DC pulse and stick
- 110V and 220V with a conversion cable
Cons
- No warranty term and no duty cycle in the listing
- No aluminum thickness rating and no AC balance range stated
- Included welding mask has no stated ANSI or CSA rating
- First listed in June 2026, with very few owner ratings
Bestarc TIG Welder AC/DC
A 215A AC/DC pulse TIG and stick welder with square wave AC, a 5 pin foot pedal in the box and nine memory slots.
Pros
- Foot pedal included, 5 pin, switches to pedal mode automatically
- Square wave AC pulse in addition to standard AC pulse
- Post gas adjustable from 1 to 15 seconds, down slope and 2T or 4T
- Saves nine sets of parameters
Cons
- No warranty term and no duty cycle in the listing
- No aluminum thickness rating
- Table claims up to 250A while the title says 215A
- 48.3 lb, the heaviest machine with a stated weight here
TOOLIOM 6-in-1 AC/DC TIG Welder with Pulse
A 200A square wave AC/DC pulse TIG that states its aluminum rating on each input, 1/8 inch on 110V and 3/16 inch on 220V.
Pros
- States aluminum thickness by input: 1/8 inch on 110V, 3/16 inch on 220V
- Square wave AC, AC and DC pulse, TIG spot and stick
- Foot pedal compatible for start, stop and current
- 27.9 lb with a large digital display
Cons
- No warranty term and no duty cycle in the listing
- Box contents listed only as the welder
- Foot pedal not included
- Product dimensions of 10 x 2 x 50 inches are clearly wrong
How we scored them
Each machine is scored out of 100 on performance, build, value, safety listing and warranty, with the weights published on our How We Pick page. A spec the listing does not publish scores nothing. None of the six states a warranty term, so every machine here scores zero on warranty.
| Product | Gear Score | Perf. | Build | Value | Safety | Warranty |
|---|---|---|---|---|---|---|
| PrimeWeld TIG225X | 58 | 25 | 18 | 15 | 0 | 0 |
| LOTOS TIG220ACDCP | 56 | 27 | 14 | 15 | 0 | 0 |
| Weldpro 200A AC/DC | 55 | 25 | 15 | 15 | 0 | 0 |
| PUWU TIG-180ACDC | 51 | 18 | 15 | 18 | 0 | 0 |
| Bestarc TIG215P | 50 | 21 | 15 | 14 | 0 | 0 |
| TOOLIOM TIG-200 TP | 47 | 21 | 11 | 15 | 0 | 0 |
Buying guide: what matters in a TIG welder for aluminum
AC output and balance
On AC, the current alternates between a cleaning half that breaks up aluminum oxide and a penetrating half that puts heat into the joint. AC balance sets the split, and AC frequency sets how tight the arc is. Only LOTOS gives a balance range, 20 to 80%. All six list pulse, which helps control heat on thin sheet.
Output on 110V
All six advertise 110V and 220V, but only LOTOS states 110V output, 140A, and only TOOLIOM states the aluminum thickness on 110V, 1/8 inch. Aluminum soaks up heat quickly, so a 110V circuit limits how thick you can weld. Plan on a 240V circuit, installed by a licensed electrician, for regular work over 1/8 inch.
Foot pedal
A pedal lets you ease off as aluminum heats up, which is why most aluminum TIG welders use one. Weldpro and Bestarc include a pedal, LOTOS and TOOLIOM sell it separately, and PrimeWeld mentions pedal control without clearly saying it is in the box.
What else you need
TIG needs pure argon, a cylinder and a flowmeter or regulator. Only the PUWU lists a regulator in the box. You will also need tungsten suited to AC, filler rod matched to the alloy, a stainless brush kept only for aluminum and thin TIG gloves.
What the listings leave out
Of the 14 AC/DC TIG listings we looked at, 2 stated a warranty term, and neither is a pick here. Only Weldpro gave a duty cycle with an amperage, and none of the 14 stated a CSA, UL or ETL listing.
TIG and aluminum safety. TIG on aluminum produces intense UV light with little visible spatter, so cover all skin and use the shade the manual specifies for your amperage. Weld with good ventilation, keep argon cylinders chained upright, and clear anything flammable from the area. See the OSHA welding overview and our Safety Disclaimer.
Frequently Asked Questions
Can you TIG weld aluminum with a DC TIG welder?
Not in practice for most home shop work. DC TIG does not break up the oxide layer on aluminum, which is why every machine here offers AC output. A DC only machine is fine for steel and stainless.
How thick can these TIG welders weld aluminum?
Three listings give a rating: TOOLIOM at 1/8 inch on 110V and 3/16 inch on 220V, PrimeWeld at 1/4 inch, and LOTOS at 3/8 inch on 240V. None states a pass count. The other three give no aluminum rating.
Do I need a foot pedal to TIG weld aluminum?
It is not required, but it helps a lot because aluminum heats up as you weld and you need less current toward the end of a seam. Weldpro and Bestarc include one.
What gas do I need for TIG welding aluminum?
Pure argon is the standard shielding gas for TIG on aluminum. You also need a regulator or flowmeter, which only the PUWU includes here.
Is MIG with a spool gun easier than TIG for aluminum?
MIG with a spool gun is faster and easier to learn for thicker aluminum. TIG gives more control and cleaner welds on thin sheet. If you want MIG for aluminum, see our best MIG welder under $1000.
Related: best multi-process welder, best MIG welder under $1000, and the TIG welders hub.
About the author
WeldGearLab Editorial is the editorial team behind WeldGearLab. We research product listings, specifications, safety listings and warranty terms, score every pick with the published Gear Score method, and correct errors when readers report them. We do not run shop tests; see How We Pick for exactly how picks are made.