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  Home > TIG Welders > Invertig 221 Welders >

  HTP Invertig 221 Air Cooled TIG Welder
Invertig 221 TIG Welder HTP

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View Our Different Options:
220 Air Cooled
220 Water Cooled
Dual Voltage 110/220 Air Cooled
Dual Voltage 110/220 Water Cooled

Air Cooled Price $2,495.00
Sale Price: $2,295.00
You save $200.00!

Product Code: 70221-12.5

Early Black Friday Special, reduced price to $2295 plus $100 of Free Goods! In stock and ready to ship! - The Invertig 221 AC/DC Inverter TIG welder will allow you to produce welds with all types of metal! We increased the maximum welding current by 10% to a full 220 amps of rugged welding power. And we put the machine on a diet, the HTP Invertig 221 weighs in at only 40 lbs, so it’s easy to take right to the job! We also added the Invertig 221 DV (Dual Voltage) which welds on both 110 volts and 220 volts – the ultimate in portability.

The Invertig 221 is packed with features many of our competitors don't even offer at twice the price! It's the only welder in it's class with independent AC amperage adjustment. This feature gives you precise control over the heat input to both the workpiece and the tungsten by allowing you to separately adjust the electrode negative and electrode positive amperage.

Conventional transformer TIG welders have a fixed AC frequency of 60 Hz (same as your household current).
They use a pure tungsten electrode which forms a ball when welding AC. The Invertig 221 offers you the
ability to adjust the AC frequency from 20 Hz to 200 Hz – the higher AC frequency gives you a more focused
arc with greater arc control. With an inverter, running a higher AC frequency, say in the 150 Hz to 200 Hz
range allows you to use ceriated, lanthanated, or thoriated tungsten sharpened to a point. Which:
TIG Welder Invertig 221 top view • Allows the arc to jump from a point instead of
a ball, which provides unparalleled arc stability
and reduces "arc wandering".
• Produces a more focused arc, resulting in a
narrower bead and making it much easier to
weld inside corners.
• Minimizes the heat affected zone as the heat
is more concentrated, making it easier for both
the novice and professional to weld thin materials.

The 221 also gives you precise control over the
AC balance (from 10% to 90%) so you can
control the arc cleaning action.

The 221 is also an excellent DC welder too. The smooth, stable arc coupled with the 221’s high speed pulse

DC pulse make intricate work on mild steel, 4130, stainless, inconel and titanium a breeze. High speed DC

pulse focuses the DC arc much like the AC balance focuses the AC Arc – the end result – more control

and less arc wandering. With a pulse rate of up to 999pps, there isn’t a job out there the 221 can’t handle.

Let’s face it, control of the arc is the foundation of better welds and precision results. With the 221’s

independent AC amperage adjustment, adjustable AC frequency, adjustable AC balance, and high speed

DC pulse, the 221 gives you arc control like you never before experienced.

The 221 allows you to store up to 64 separate welding programs. So, say you found a setting you really like

for welding aluminum radiator tanks to cores. AC – On, HF – On, Max Current = 180 amps, AC Balance = 65%, AC Frequency = 180 Hz, EP = 60%, Pulse Freq 1 Hz, Peak Time 80%, Background Current 30%. Simply

store this program and you can come back to it when you have another tank to core job. Assigning banks

of memory slots to multiple welders allows them to access their personal settings in a job shop environment.

Our Dual Voltage model can be ordered with or without a Water Cooler.

Conventional arc welding is really simple with the Invertig 221. Using the stick mode in

conjunction with the foot pedal, allows you to vary the welding amperage. Perfect when doing pipe welding!

Select the touch start mode for welding aluminum or any other material without High Frequency. This is

important if your application takes you near sensitive electronic equipment, such as on site repairs in a

hospital or repairing aluminum vehicles with on-board computers.

This package of power weighs just 40 lbs and fits into a cabinet measuring 19 Ύ” long by 7 ½” wide by

15 Ύ" high. The Invertig 221 package includes a 12 ½' long 17-Series air-cooled TIG torch, 12 ½’

long foot pedal, 10' ground cable clamp, flowmeter and 70 minute TIG DVD.

The advanced technology found in the Invertig 221 will allow you to produce professional quality welds in all

types of metal – quickly, easily and affordably. And every Invertig 221 comes with our 90-Day Money-Back

Guarantee. We are so sure you will love your Invertig 221 that you can try it in your own shop for 90-days –

if for any reason you don’t like it we will take it back, no questions asked. Further, we back the machine

with a 3-year warranty. Welding cart not included.

The Invertig 221 Air Cooled, Water Cooled or Dual Voltage TIG welders are shipped free anywhere in

the Continental United States, additional charges will apply for Hawaii, Alaska, Puerto Rico and international

locations. We are happy to ship the Invertig 221 to any location, however there will be additional charges.

Please call or email us at 800-872-9353 or to discuss any shipping questions. To

place your order now, please do so by adding to your shopping cart. One of our customer service

representatives will contact you by phone or email if there are any additional shipping costs.

Specifications Invertig 221 Invertig 221 DV
Input Voltage 220 Volts 230 Volts 115 Volts
Input Amperage TIG 36 amps @ 220 amps 26 amps @ 220 amps 30 amps @ 130 amps
Output Amperage TIG 4 to 220 amps 4 to 220 amps 4 to 155 amps
Duty Cycle 20% @ 220 amps
60% @ 165 amps
100% @ 145 amps
20% @ 220 amps
60% @ 165 amps
100% @ 145 amps
20% @ 155 amps
60% @ 130 amps
100% @ 110 amps
No Load Voltage 65 volts 65 volts 44 volts
Stick Welding Amps 200 amps 200 Amps 140 Amps
Arc Voltage 10.2 to 18.8 volts 10.2 to 18.8 volts
Torch Length/Type SR 17 – 12.5’ Long SR 17 – 12.5’ Long
Foot Pedal Length 12 ft 12 ft
Ground Cable Length 10 ft 10 ft
Slope Down .1 to 10 sec .1 to 10 sec
Pre-Gas Flow .1 to 2 sec .1 to 2 sec
Post Gas Flow .1 to 30 sec .1 to 30 sec
Final Current 10% to 90% 10% to 90%
Pulsing Frequency 0.1 to 999 Hz 0.1 to 999 Hz
Back Ground Current 10% to 90% 10% to 90%
Peak Time 10% to 90% 10% to 90%
Spot Welding Time .1-10 sec .1-10 sec
AC Frequency 20 to 200 Hz 20 to 200 Hz
AC Balance 10 to 90% 10 to 90%
Weight 40 lbs. 41 lbs.
Size 19 Ύ” L x 7 ½” W x 15 Ύ” H 19 Ύ” L x 7 ½” W x 15 Ύ” H

Accessories for this product...
15' Electrode Holder & Cable 15' Long Ground Extension Flex Neck TIG Torch Head for 20 Series Torches Arctic Chill Cooler - Dual Voltage for HTP Invertig 221DV
Our Price: $60.90

Our Price: $60.00

Our Price: $64.95


15' Electrode Holder & Cable Ground Extension Flex Neck Tig Torch Head for 20 Series Torches Photo Water Cooler for TIG Welder
25' Long Ground Clamp Tungsten Grinder Hand Amperage Control - Rotary Format, Foot Pedal Not Included Optional Upgrade - 25' 17 Series Air Cooled Torch & Foot Pedal for Invertig 221
Our Price: $99.00

Sale Price: $229.95

Our Price: $48.00

Our Price: $56.00

25' Long Ground Clamp Tungsten Grinder Photo Hand Amperage Control -Rotary 25' TIG Torch & Foot Pedal Invertig 221 TIG Welder
Short Pyrex Cup Kit for 17, 18 & 26 Series Torches TIG Torch Holder CK Steady Grip - HTP Invertig 221 7 Pin TIG Welders Pyrex Cup Kit for 9 & 20 Series TIG Torches
Sale Price: $60.95

List: $17.95

Our Price: $272.96

Sale Price: $54.95

Pyrex Cup Kit for 17, 18 & 26 Series TIG Torches Photo TIG Torch Holder Photo CK Steady Grip for HTP Invertig 221 TIG Welders Photo Pyrex Cup Kit for 9 & 20 Series TIG Torches Photo
Cover for Invertig 221 Tig Parts Kit for 9 & 20 Series Torches Arctic Chill Cooler - 220 Volts for HTP Invertig 221 TIG Welding Gloves
Sale Price: $55.00

Sale Price: $61.00


Our Price: $14.95

Cover for Invertig 221 TIG Welder Photo Tig Parts Kit for 9 & 20 Series Torches Photo Water Cooler for TIG Welder TIG Welding Gloves - Large Photo
Adjustable Tungsten Grinder Flex Neck TIG Torch Head for 17 Series Torches Optional Upgrade - 25' Water Cooled Torch & Foot Pedal for Invertig 221 TIG Parts Kit for 17, 18 & 26 Series Torches
Sale Price: $284.95

Our Price: $47.95

Our Price: $56.00

Sale Price: $61.00

Adjustable Tungsten Grinder Photo Flex Neck TIG Torch Head for 17 Series Torches Photo 25' TIG Torch & Foot Pedal Invertig 221 TIG Welder Tig Parts Kit for 17, 18 & 26 Series Torches Photo
10' Leather Cable Cover, 7/8" Diameter, Fits WP-20 Hand Amperage Control Upgrade- Slider Format, Does Not Include Foot Pedal Coolant
Our Price: $38.95

Our Price: $48.00

Our Price: $29.95

10' Leather Cable Cover Hand Amperage Control - Slider for TIG Welders Coolant Photo

Average Customer Review: 5 of 5 | Total Reviews: 6 Write a review.

  1 of 1 people found the following review helpful:
221 HTP Invertig 221 Tig, Water cooler June 6, 2015
Reviewer: Shane Whitted from Junction City, Or.  
Thank You Diana
Fast delivery, excellent product.
Eugene Excavation & Plumbing Inc.

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  1 of 1 people found the following review helpful:
Amazing unit November 21, 2014
Reviewer: Andrew from Spokane, WA  
I've had this machine since about March of 2014, and tackled many jobs big and small with it. From Titanium pie cuts to 1 inch thick aluminum. Its got so much versatility, from the small size to wide range of settings. I'm very picky when it comes to quality of the machine its self, and i could not find one thing i didnt like, even when i took it appart, it's built solid and will last for a years to come. If you're on the border about getting a dynasty or inverting 221, what really sold me was Customer service. I've called 5 times and always talked to the same person. try to get that with miller. They will bend over backwards to make you happy and care that you're happy with there product. It's a fantastic unit in every way!

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  1 of 1 people found the following review helpful:
Superb machine May 13, 2014
Reviewer: Anonymous Person from Little Rock, AR.  
I researched this machine for three days before purchasing it, TRYING to find some negative comments on it,...I found absolutely none!!!  I bought a Chinese made TIG last year, and it was almost like a toy compared to this machine.  When I have visitors to my shop, I show them a side by side comparison on the differences of this machine to the Chinese made ones,...things as simple as a ground clamp, are just worlds apart in quality.  I've never seen such a well built machine for this price.  The hose to the torch is unbelievably flexible and easy to work with.  I'm a beginner TIG welder and from the very first arc that I fired up, I was laying beautiful beads.  I can't say that for my Chinese version.  The foot pedal is heavy and wide, and is so proportionally controllable,...I love it.  There are very few things that I have ever purchased that were worth every penny spent on it, like this welder.  If you're shopping for a great TIG welder, you can stop looking and buy the HTP 221.

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  1 of 1 people found the following review helpful:
Invertig 221 and USA Weld are simply awesome! May 8, 2014
Reviewer: Will R. from The Beautiful Pacific Northwest  
First of all, the customer service at USA Weld is top notch! Diana is great to work with. She helped me with my initial order and some follow up questions I had once I received my machine. I also had a few technical questions  so I email tech support. Jeff Noland responded and answered all of my questions in less than 30 minutes!!! THANK YOU BOTH!

Now, about the welder! This is my first inverter machine so I wasn't sure what to expect. (I learned to TIG on Blue machines and that is all I have used since) Well, I NEVER will weld with a transformer based machine again! The Invertig 221 is very easy to setup and use. The arc is so stable and smooth! It is amazing how all of the A/C adjustments affect welding aluminum. I cannot believe how easy it is to weld aluminum now. I feel like I am cheating or something!
Bottom line, JUST BUY IT!! You will not regret it! (I bought the single voltage version, I just don't have the need for DV.)


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  0 of 0 people found the following review helpful:
Great machine November 30, 2013
Reviewer: Peter Zila - ZILA Industrial Repairs from Caledonia, WI United States  
I have a 221 Dual Voltage and that is about one of the best tig welders i ever owned !  
Small light and powerful.  
I can weld stainless steel kitchen sinks plugging in a customers 110 outlet just carrying a 40 cf cylinder with me or i can weld some 1" thick aluminum with a helium argon mixture and multiple passes at the shop being plugged in to 220 ....  That is where the htp water cooler comes in really handy too.....  I have had the machine the first week when they started selling it .... That was over 2 years ago.....  And i don't like writing a review after a week or 2 - but this machine has proven itself in the shop and in the field over and over .....!!!!  And it has deserved more credit than i can give it here. Smooth arc! Powerful, small, light and absolutely durable! Tons of adjustments for those really critical jobs.

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