AC Infinity THERMOFORGE T3, Environmental Grow Tent Heater with VPD Temperature Controller, 10-Level PTC Heating and Included Extension Hose for Tents, Rooms, Greenhouses
Condition: New
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Saturday, Nov 8
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Features
- First-of-its-kind heater designed from the ground up with precision smart controls for ideal grow conditions.
- Onboard controller with corded sensor probe sets VPD and temperature triggers, timers, and cycles.
- Cutting-edge PTC plate technology offers 10 distinct heat levels using PWM control to finely tailor temperature.
- Flexible hose with additional 4 ft. attachment directs heat to focused areas within your grow space.
- Go beyond on/off smart outlets by integrating with our UIS controllers for true 0-100% output control.
Brand: AC Infinity
Special Feature: Adjustable Temperature, Automatic Shutoff System, Digital Display, Portable, Smart VPD Controls
Color: Black
Form Factor: Tower
Indoor/Outdoor Usage: Indoor
Brand: AC Infinity
Special Feature: Adjustable Temperature, Automatic Shutoff System, Digital Display, Portable, Smart VPD Controls
Color: Black
Form Factor: Tower
Indoor/Outdoor Usage: Indoor
Product Dimensions: 5.94"D x 11.49"W x 12.12"H
Recommended Uses For Product: Tent
Mounting Type: Floor Mount
Room Type: Grow Area
Burner type: Radiant
Item Weight: 4.22 Kilograms
Fuel Type: Electric
Number of Speeds: 10
Voltage: 120 Volts (AC)
Amperage: 5 Amps
UPC: 819137024489
Item Weight: 9.28 pounds
Manufacturer: AC Infinity
Item model number: AC-SFT3
Date First Available: February 15, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Nov 8
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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.
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Reviewed in the United States on August 17, 2025 by Micheal P. Kloppel
Another awesome A/C Infinity tool. Perfectly calibrated out of the box, heats well, works as intended.
Reviewed in the United States on October 2, 2025 by Chris
This thing works awesome. Wish the outlet tube going into the tent was larger and pushed more air. But it still works great.
Reviewed in the United States on September 15, 2025 by Josh wirth
I have several of these and they have never let me down. Easy to setup, easy to monitor and control what more could you ask for.
Reviewed in the United States on October 7, 2025 by Amazon Customer
Does as advertised
Reviewed in the United States on October 4, 2025 by john m
Works great cept after a few days it has gotten louder.
Reviewed in the United States on April 24, 2025 by Edwin Urbanoski
I love AC INFINITY products and their customer service is incredible! This heater serves as a perfect example, I used it every day, consistently in the New England winter and it kept my grow tent a perfect toasty 80 degrees Fahrenheit even when the temperature outside the tent was at least 50-60 degrees, it had no problems being in operation 24/7 for the entirety of winter and fall. I haven't tested above 80 because I don't have the need to but still it can definitely get you to temps below 85. Not loud at all, sounds like a fan at low speed so you wont get headaches from this, with the ACI Controller you can program it to do whatever you want, but even if you don't have one you can still control it with the actual Unit. I also bought one to use in my moms room to make sure her room didn't get too cold in the winter, helped the room get to 65-70 when the home heating couldn't! I don't see it having any problems next season, as it went months operating constantly without any issues, but ACI has great customer service and if anything DID go wrong I imagine they'd take care of you. As someone who has everything AC Infinity I can definitely say I back them up.
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Reviewed in the United States on June 22, 2025 by Amazon Customer
I use this to keep the temperature in my grow tent at a specific temp and this heater has not failed once. I use these with my AC Infinity control hub so I can monitor the temp. It's always spot on, or if it does vary, it's only by 1 or 2 degrees. Not substantial enough to worry about. There's going to be some deviance. The unit itself seems fragile. I wouldn't suggest moving it around too much. The unit does not overheat either. I check it periodically to ensure it isn't overheating since it's on 24/7. I highly recommend the AC Infinity line of products (even though the are a Chinese company) because their devices all get along nicely and I can monitor environmental conditions whenever I want to. I wanted something I could use to manage all the devices in my tent, to include the grow light, the humidifier, the heater, the fans, and the dehumidifier, which is NOT an AC Infinity product. Also, I can easily scale up if I want to use a bigger tent. Overall, it's easy to give their products a 5 star rating, for now. We'll see how durable these devices are after being used 24/7 for a couple of grow cycles. Maybe I'll revise this then.
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Reviewed in the United States on February 9, 2025 by Kevin-007