








🔥 Grow smarter, not harder — precision heat for next-level cultivation 🌿
The AC Infinity THERMOFORGE T3 is a cutting-edge environmental heater designed specifically for grow tents, rooms, and greenhouses. Featuring 10-level PTC heating controlled via an onboard VPD sensor and temperature controller, it delivers precise, energy-efficient warmth. Its flexible 4 ft. extension hose allows targeted heat distribution, while integration with UIS controllers enables seamless 0-100% output modulation. Built for durability and smart climate management, it’s the essential upgrade for professional growers seeking optimal plant health and yield.













| ASIN | B0CVQXZ9FT |
| Amperage | 5 Amps |
| Best Sellers Rank | #4,696 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #23 in Outdoor Heaters |
| Brand | AC Infinity |
| Burner type | Radiant |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (563) |
| Date First Available | February 15, 2024 |
| Form Factor | Tower |
| Fuel Type | Electric |
| Indoor/Outdoor Usage | Indoor |
| Item Weight | 9.28 pounds |
| Item model number | AC-SFT3 |
| Manufacturer | AC Infinity |
| Max Temperature Setting | 140 Degrees Fahrenheit |
| Min Temperature Setting | 15 Degrees Celsius |
| Mounting Type | Floor Mount |
| Number of Speeds | 10 |
| Product Dimensions | 5.94"D x 11.49"W x 12.12"H |
| Recommended Uses For Product | Tent |
| Room Type | Grow Area |
| Special Feature | Adjustable Temperature, Automatic Shutoff System, Digital Display, Portable, Smart VPD Controls |
| UPC | 819137024489 |
| Voltage | 120 Volts (AC) |
M**L
Elegant and sturdy - Quality I expect from AC infinity
I bought this, the AC Infinity AI controller, the Humidifier and own 2 inline fans. With just this a pull fan and the humidifier going with the AI controller i watched VPD be kept in perfect check. I'm normally terrible about this and just set a Temp. The heater has a flex tube you can adjust to blow into a room or just heat the room its in. The screen is easy to read and use. The screen turns off and is controlled by the AI controller if connected, which is fine honestly. The quality as as you'd expect. from AC infinity, elegant, smooth and feels sturdy. It worked for over 4 months off and on automatically and worked great. It definitely uses far less energy than the radiant heater I was using and probably paid for itself. I love AC infinities feel and quality. If you are in the market for a grow room heater then this is worth your money.
S**9
Works great!!
Heater is easy to use and set temperature. I have a 4x4x80 in my garage and keeps it at 77 . I’m from the northeast so it’s cold at night and does run more with out the light on to keep up with the cold. Heat out put is good.
M**S
Nothings better than AC INFINITY!
This is a game changer for your grow room. I have a 4x 4 grow tent. I had a consumer heating tower that worked, but definitely not as well as my new AC INFINITY heater. I’ve plugged it into my AC INFINITY Ai controller and life is so easy now. My grow is slamming now and I can sit back and relax, my plants are thriving!
J**D
Works great but settings must be adjusted right to heat
My room was 60 degrees and the tent wouldn't heat to 70. I learned the off must be set to 0, the on to 10, and then you can set auto to what you like.
B**O
Best heater for your grow tent!!!
What a difference!!! Absolutely love AC Infinity products!! Works better than expected. Keeps my grow at the perfect temp,VPD, Humidity. I highly recommend 👌
R**K
The auto feature
So I ordered one of these probably a month and a half or so ago set it all up it was working okay for about 8 hours and then so I had it on the auto mode and it just would not show anything temperature or humidity or everything it promises to do it's supposed to sense that he on and off like a thermostat with this little bulb so I sent it back and it was replaced and then this one I've had going probably for over 3 weeks it was okay but one other thing I don't like about it I have a 4x4 can't it's not really big even on high with an ambient temperature of 61°, it could not even reach 70°. Inside and closed 4x4 mind you so yeah it'll work if you run it on on all the time but that's not the point it's supposed to on and off in the parameters that you set humidity PDF blah blah blah but it's doing the same symptoms the first one did except it took about 3 weeks longer and then it doesn't even heat that well it can't keep up in a 4x410 at 60 degrees it's even maintain 70 something's wrong there but anyway that's not my big gripe my big gripe is the same thing it just starts losing the automatic function which I like to set parameters for what the temperature is so I guess in a nutshell I would probably highly recommend steering away from this thing and I do like a lot of stuff about Viva son but that thermal proheater yeah after getting the second one and it does the same thing within 3 weeks yeah there's an issue there so I I rarely write reviews on Amazon and I ordered thousands of dollars thousands of dollars yearly from them and I probably only had about well since probably 2010 maybe five things that I've actually written a bad review about and I order a lot for my company and my personal stuff but yeah I would say no to this ever again so I'm a single back with the old little heater and put a thermometer in there and let that work because this thing is drove me nuts I've even insulated the thing the tube want again it's not if it can't keep up 10° difference at 60 degrees that's an issue and when it this is the second one I've had within them a month and a half to two months and an automotive just blanks out and that it will work on on the only problem is it's on all the time so unless you're going to sit out there and turn it on and off you're going to ruin your plants so yeah I would highly stay clear of this
J**O
Great heater issues
Great eater easy to use
W**P
Great buy
It works just as advertised
B**N
Macht was es soll, schade nur das das Display nicht leuchtet während es mit dem Controller verbunden ist aber ist okay kann man mit leben
J**N
Love the heater just thinking I need to upgrade to a bigger one. Works great but I deal with -30+ weather so bigger is needed for me. I love all AC infinity products though.
A**E
Quiet and efficient, I have no complaints!
M**E
Delivered one day early than expected. Works very well and is very quiet. Easy to set up and it maintains the set temperature with ease. I'm very happy with everything
C**6
Works great in my 4x4 grow tent in a cool basement. Have it paired to a 69pro controller
Trustpilot
2 months ago
3 weeks ago