Includes: 12.5' 17 Series Rigid Air-Cooled TIG Torch, 12.5' Foot Pedal, 10' Ground Clamp, Flowmeter, 6’ Gas Hose
Does Not Include:
Welding Cart, Gas Bottle, Tungsten, Filler Rod
HTP America: TIG Welder
Invertig 221 AC/DC TIG Welder (220V) Air-Cooled
Stop Paying Dynasty Prices for 200 Amps.
List Price: $3,206.00
Our Price: $1,999.00
You Save: $1,207.000
COMPARE
If you’re comparing AC/DC TIG machines in the 200–220 amp class,
you’ve already seen the numbers.
$5,000+ for a Miller Dynasty 210DX power source.
$5,500+ for comparable Lincoln, ESAB or Fronius setups.
The HTP Invertig 221 gives you full AC frequency control, adjustable balance, pulse TIG, 64 programmable memories, and 220 amps of output — for roughly half the cost of the big blue and red machines.
This isn’t a hobby box.
It’s a serious AC/DC inverter built for people who actually weld.
Quick Specs
(What Actually Matters)
Output TIG
4-220 amps
Output Stick
4-220 amsp
Input Power
230V single phase (+/-15%)
AC Frequency
20–200 Hz
AC Balance
10–90%
Pulse TIG
Yes (DC up to 999 PPS, AC up to 10 PPS)
HTP 221 vs Miller Dynasty 210DX
HTP Invertig 221
Amperage 4–220A 1–200A
AC Frequency 20–200 Hz Up to 400 Hz
Programmable Memory 64 Limited
Price (Typical) ~ $2,800–$3,000
Complete $5,000+
Power Source Only
Miller Dynasty 210DX
Amperage 4–220A 1–200A
AC Frequency 20–200 Hz Up to 400 Hz
Programmable Memory 64 Limited
Price (Typical) ~ $2,800–$3,000
Complete $5,000+
Power Source Only
Honest Take
Miller offers higher max frequency and brand recognition.
HTP delivers nearly identical aluminum control at roughly half the price.
If brand matters most to you, buy Miller.
If performance-per-dollar matters, the HTP 221 is hard to ignore.
Who's This Perfect For
Fabricators welding aluminum weekly
Motorsports, intercooler piping, stainless exhaust
Anyone doing 4130 chromoly welding
Small shops that want Dynasty-level arc control without Dynasty pricing
Welders who understand AC balance and frequency tuning
230V Garages that are welding constantly
Who This NOT For
120V-only garages
Occasional “once-a-month” hobby welding
Anyone unwilling to learn AC settings
Production shops needing 300+ amp
aluminum daily
Buyers expecting $900 Amazon simplicity
Welding 1/2"+Aluminum or Stainless Steel
Real-World Material Thickness Capacity
Rule of thumb: 1 amp per .001" of material.
Aluminum:
1/8" → ~125 amps (easy)
3/16" → ~170 amps (comfortable)
1/4" → ~200 amps (ideal range)
Steel / Stainless Steel:
1/4" all day
3/8" with prep
Excellent control on thin gauge
This is a 220-amp machine. Treat it like one.
CLICK BELOW TO WATCH!
TIG TAWK! AC Welding Aluminum
This Old Tony
Real Shop Use Case
You’re welding:
1/8" aluminum intercooler piping
3/16" aluminum brackets
Stainless exhaust
Occasional chromoly cage components
You Want:
Tight arc control at 150–200 Hz
Adjustable AC balance for cleaning vs penetration
Pulse control for heat management
High-frequency start without tungsten contamination
That’s exactly where the Invertig 221 performs.
Decision Guide
Buy This If:
You weld aluminum regularly
You want full AC frequency and balance control
You need programmable job memory
You want serious performance without paying premium brand pricing
Skip This If:
You rarely weld aluminum
You only have 120V power
You need more than 220 amps
You don’t want to tune settings
STILL NOT SURE?
Frequently Asked Questions
Just a high-control AC/DC inverter built for real fabrication.
Question 1: Is the HTP Invertig 221 good for aluminum?
Yes. It offers full AC frequency (20–200 Hz) and adjustable balance (10–90%), giving you complete control over cleaning and penetration.
Question 2: Can it weld 1/4 inch aluminum?
Yes. 1/4" aluminum requires roughly 200 amps, which this machine provides.
Question 3: Does it require 220V?
Yes. This single-voltage model runs on 230V single-phase power.
Question 4: Does it have pulse TIG?
Yes. Pulse is adjustable in DC and AC modes for heat control and bead consistency.
Question 5: How does it compare to Miller Dynasty?
Miller offers higher max frequency and strong brand recognition. The HTP 221 delivers similar real-world performance at significantly lower cost.
Question 6: What’s the warranty?
3 years on the machine. Torch components have shorter coverage.
Don’t Buy This If…
You only weld occasionally.
You don’t have proper 230V power.
You’re not comfortable learning AC balance and frequency.
You need 300+ amp aluminum capability.
This is a serious machine for serious work.
If you’re comparing machines in the 200–220 amp AC/DC class and
you care more about performance than paint color,
the Invertig 221 belongs in your shop.
No gimmicks.
No marketing fluff.
Just a great machine built for real world fabricators.
TESTIMONIALS
What others are saying
"Top Tier Machine"
"Currently have the 221 invertig , now going on 3 years since ive had it . never had no issues. Works amazing on all the fabrication work I do. Lil weird to understand the set up process but easy peezee once ya figure it out!"
- J.Leigh Kustomz
"Great TIG"
"Bought mine a while ago. great welder amazing quality and performance. fast shipping great people to deal with they will help you in any way possible. been purchasing all my welding machines and supplies for years."
- wayne
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30-Day Money Back Guarantee
HTP® offers a 30-day money back guarantee on our MIG welders, Stick welders, TIG welders, and plasma cutters! Try the machine in your own shop, on your own projects, for 30 days; if you aren't satisfied for any reason, America HTP® USAWeld Inc. will take the machine back.