AC Infinity Terraform 9 UK, All-In-One Climate Control A/C, 9,000 BTU

In stock now. UK specification, 230V / 50Hz with a UK plug fitted as standard.

AC Infinity Terraform 9 puts cooling, heating, dehumidification, air circulation and VPD control into one serious climate system. Instead of piecing together separate bits of kit, you can manage the grow environment from one unit and let it respond as conditions change.

Terraform 9 at a glance

One unit. Proper climate control.

Terraform 9 can automatically switch between cooling, heating and fan operation through a single duct. Set the temperature or VPD you want and, when paired with Controller AI+ or a compatible newer controller, the system can react to changing conditions without you constantly chasing the room.

For deeper dehumidification, the unit can be configured with two ducts. Its self-evaporating design also sends excess water back towards the condenser, helping reduce how often the unit needs draining.

Positive Pressure: What That Actually Means for Your Room

The standard setup (the one that covers Cooling, Heating, Cool/Heat auto-switching and Fan through a single duct) runs on positive pressure, per AC Infinity's own installation manual. That means the Terraform is pushing air into your tent, not pulling it out. Worth understanding before you plug it in, because most "all-in-one" write-ups skip this bit entirely:

• Air going in has to come from somewhere, and air going in means air has to get out somewhere too. Use a lung room if you've got one: a sealed adjacent space the Terraform draws its intake from, with the tent's displaced air returning to that same space. That's the proper way to run this in a sealed room.
• No lung room? Then you're effectively cooling (or heating) the air in the room the tent stands in, not just the air inside the tent. The unit pulls its intake from that room, so the room's own temperature and humidity become part of the system whether you've planned for it or not.
• Keep the exhaust away from the unit's own intake. If the air coming back out of the tent ends up getting pulled straight back into the Terraform, you're just recirculating the same air in a loop. The unit works harder, your readings stop meaning anything, and you won't get the climate control you're paying for. Route it out into a different area to wherever the Terraform itself is sitting and drawing its intake from.

It's an all-in-one, not a do-it-all-at-once. Think Swiss Army knife rather than toolbox: every tool's in there, but you're using one blade at a time. The single-duct setup above genuinely does auto-switch between Cooling, Heating and Fan with zero reconfiguration. What it can't do is dehumidify your tent on that same setup at the same time. Dry mode needs its own configuration, either dehumidifying the space the unit's sitting in (no duct into the tent at all) or adding a second duct for dehumidification targeted at the tent, alongside the main one.

Why growers are looking at the Terraform 9

• 9,000 BTU cooling and 2,100W heating from one unit
• Cooling, heating, dehumidification, circulation and VPD management
• Single-duct automatic switching between cool, heat and fan modes
• Self-evaporating design to reduce drain frequency
• WiFi app features when paired with a compatible AC Infinity controller
• Automation, schedules, environmental data, alerts and historical tracking through the AC Infinity ecosystem
• Wheels for easier positioning
• UK specification with UK plug fitted

Terraform 9, Terraform 8 and Terraform 7

If you have been searching for Terraform 8 or Terraform 7, this is the UK and EU Terraform model you are looking for. Terraform 9 is the 230V / 50Hz UK and EU release. The Terraform 8 name is associated with the equivalent North American platform, while Terraform 7 was an earlier generation.

We have broken the naming down properly in our Terraform 8 vs Terraform 9 guide.

Smart control and the AC Infinity ecosystem

Pair Terraform 9 with a compatible controller to bring it into the wider AC Infinity system. That gives you access to automation, schedules, alerts and environmental data from your phone. Building out a full AC Infinity room? Take a look at our AC Infinity range for compatible ventilation, controllers and grow-room equipment.

Compatibility note: Automatic mode switching is not available with Controller 69 Pro+ or earlier controllers.

Technical specifications

Terraform 9 FAQs

Is the AC Infinity Terraform 9 available in the UK?

Yes. This is the UK specification Terraform 9, supplied for 230V / 50Hz power with a UK plug fitted.

Does Terraform 9 cool and heat?

Yes. It provides 9,000 BTU of cooling and 2,100W of heating, alongside dehumidification, circulation and VPD control.

Can Terraform 9 control VPD?

Yes. VPD-based control is supported when the system is paired with the appropriate compatible AC Infinity controller.

Do I need two ducts?

Not for normal automatic cooling, heating and fan switching - those run on the standard single-duct, positive-pressure setup. Deeper, targeted dehumidification into the tent uses a two-duct configuration; full-space dehumidification (dehumidifying the room the unit sits in) uses no duct into the tent at all.

Can it cool, heat and dehumidify all at the same time?

Not on the standard single-duct setup - yes it's an "all-in-one", but not a "do-it-all-at-once" - think of a Swiss Army knife; they are also an "all-in-one" but in the same way, you can't use them all at bloody once!

Cooling, Heating and Fan auto-switch between each other on that single duct with zero reconfiguration, but Dry mode is its own separate setup - either no duct into the tent at all, or a second duct added alongside the main one for dehumidification targeted at the tent. One function at a time on the main duct.

What does "positive pressure" mean for how I set this up?

It means the Terraform is pushing air into your tent rather than pulling it out, so that air has to come from - and return to - somewhere. You push any type of air into a space..it is going to blow out if the exhaust is running at lower power.

Ideally that's a lung room: a sealed adjacent space the unit draws intake from and the tent's displaced air returns to. Without one, the room the tent stands in effectively becomes part of the system, since that's where the unit pulls its intake air. Either way, keep the tent's exhaust away from the Terraform's own intake - recirculating the same air in a loop means the unit works harder for climate control you're not actually getting.

In simple terms, make the Terraform pump the cool air into a separate space (another tent or a room, or even a big cardboard box, it don't matter), then have the tent suck from this space so it's drawing the cool air by proxy when the extraction is running.