Grow Gadgets Temperature Controller — 6000W Dual Heating & Cooling Thermostat
Best for: Growers who need reliable temperature control without the WiFi complexity or premium price tag
Our thoughts
This is a proper workhorse of a thermostat. Dead simple to use, remembers your settings, and handles up to 6000W of heating or cooling load without flinching. For the money, you're getting a no-nonsense temperature controller that does exactly what it should. One we see growers come back to regularly.
The Grow Gadgets Temperature Controller is a dual heating and cooling thermostat that automates temperature management in your grow space. Plug in a heater or fan, set your target temperature, and it handles the rest. The built-in memory function means it remembers your settings, and the included temperature probe reads conditions in real time with ±1°C accuracy. No apps, no faffing about—just reliable climate control at a price that makes sense.
How it compares
This sits in the budget-to-entry mid-range of temperature controllers for grow rooms.
- Higher power capacity (6000W) than comparable basic models like the Inkbird ITC-308 (2000W)
- Significantly cheaper than smart WiFi controllers with app control
- Simpler operation than multi-zone systems — one space, one setting
- No subscription fees or WiFi dependency needed
You're trading app control and advanced features for simplicity, affordability, and honest reliability.
Usage guidance
The Grow Gadgets works across most heating and cooling setups:
With a heater (winter or cool climates)
Plug your heater into the controller outlet. Set your minimum target temperature. When the space drops below that, the controller powers on the heater automatically.
With a cooling fan or AC unit (summer or high heat)
Set your maximum target temperature. When it exceeds that, the fan or cooler runs. When it drops, it cuts off.
Dual heating and cooling setup
Use two separate controllers—one for heating, one for cooling—to maintain a tight temperature window. Common in propagation areas and seedling trays where precision matters.
Propagation and seedling work
Heat mats work brilliantly with this controller. Set it to 21–24°C and let it manage mat temperature automatically, removing the guesswork from germination.
Position the probe centrally in your space, away from direct light or heat sources, for accurate readings.
Technical specifications
- Temperature range: −9°C to 50°C
- Accuracy: ±1°C
- Maximum load capacity: 6000W
- Control modes: Automatic heating and cooling
- Memory function: Yes — remembers your set temperature
- Probe: Detachable, included
- UK plug: Standard 13A socket outlet
- Dimensions: 12.2cm (H) × 7.5cm (W) × 5.5cm (D)
Who this is for
- First-time growers setting up a small grow tent or propagation area
- Budget-conscious growers who want solid climate control without paying for WiFi features
- Seedling and propagation specialists managing heat mat temperature
- Greenhouse operators where app control isn't necessary
- Anyone running heaters or fans who's tired of manual on-off switching
Particularly suited to setups up to 2–4 square metres where one simple temperature zone is all you need.
Our take
This is honest kit that does one thing well. No smart features, no unnecessary complexity, just a temperature controller that plugs in, remembers your setting, and keeps your space stable. At this price point with a 6000W capacity, it's hard to beat for entry-level growers or anyone upgrading from manual temperature management.
Good time to buy while clearance stock lasts. Does exactly what it should, day in, day out.
