Nothing matches all of those filters.
Air conditioning and chillers
Sealed rooms, nothing vented outside
OptiClimate Pro 3 Grow Room Air Conditioner – Water-Cooled
- Models Pro 3500, Pro 6000, Pro 10000
- Functions Cooling, heating, dehumidification, filtration, a...
- Cooling method Water-cooled, no coolant gases
- Heating Ceramic heaters
- Water consumption 1-2 litres per minute
- Power supply Single-phase residential mains
- Pipework 8 m pre-charged
- Outdoor unit Not required
- Safety Auto-shutdown on leakage, alarm system connection
- Control Controller unit, temperature probe, humidistat / ...
- Siting Inside or outside the grow area or tent
- Cooling capacity, Opticlimate Pro 2000 2 kW / 6,800 BTU
- Cooling capacity, Opticlimate Pro 3500 3.5 kW / 11,900 BTU
- Cooling capacity, Opticlimate Pro 6000 6 kW / 20,500 BTU
- Cooling capacity, Opticlimate Pro 10000 10 kW / 34,100 BTU
- Cooling capacity, Opticlimate Pro 15000 15 kW / 51,200 BTU
- Cooling water, Opticlimate Pro 2000 0.6-1.2 L/min
- Cooling water, Opticlimate Pro 3500 1-2 L/min
- Cooling water, Opticlimate Pro 6000 2-4 L/min
- Cooling water, Opticlimate Pro 10000 3-6 L/min
- Cooling water, Opticlimate Pro 15000 5-9 L/min
- Dehumidification, Opticlimate Pro 2000 35 L/24h
- Dehumidification, Opticlimate Pro 3500 55 L/24h
- Dehumidification, Opticlimate Pro 6000 100 L/24h
- Dehumidification, Opticlimate Pro 10000 170 L/24h
- Dehumidification, Opticlimate Pro 15000 270 L/24h
- Heating, Opticlimate Pro 2000 2 x 1,300 W ceramic (2.6 kW)
- Heating, Opticlimate Pro 3500 2 x 1,500 W ceramic (3 kW)
- Heating, Opticlimate Pro 6000 3 x 1,500 W ceramic (4.5 kW)
- Heating, Opticlimate Pro 10000 3 x 2,000 W ceramic (6 kW)
- Heating, Opticlimate Pro 15000 3 x 2,700 W ceramic (8.1 kW)
- Power, Opticlimate Pro 2000 500 W absorbed
- Power, Opticlimate Pro 3500 740 W absorbed
- Power, Opticlimate Pro 6000 1,450 W absorbed
- Power, Opticlimate Pro 10000 2,150 W absorbed
- Power, Opticlimate Pro 15000 3,100 W absorbed
- Power supply, Opticlimate Pro 2000 230 V, 1 or 2 phase
- Power supply, Opticlimate Pro 3500 230 V, 1 or 2 phase
- Power supply, Opticlimate Pro 6000 230-400 V, 1 or 3 phase
- Power supply, Opticlimate Pro 10000 230-400 V, 1 or 3 phase
- Power supply, Opticlimate Pro 15000 400 V, 3 phase
OptiClimate Water Cooler – Closed Loop Grow Room Chiller
- Cooling capacity range 4 to 53 kW
- Compact vertical models 4.5 kW, 9 kW, 14 kW, 18 kW, 32 kW
- Industrial models 12 kW vertical, 17 kW vertical, 32 kW vertical, 3...
- 4.5 kW dimensions 650 x 320 x 410 mm, 5 kg, 1 fan
- 9 kW dimensions 1200 x 320 x 410 mm, 9 kg, 2 fans
- 14 kW dimensions 1720 x 320 x 410 mm, 15 kg, 3 fans
- 18 kW dimensions 1170 x 320 x 810 mm, 16 kg, 2 fans
- 32 kW dimensions 1770 x 320 x 810 mm, 26 kg, 2 x 2 fans
- Tube diameter 3/8", smooth (S) and grooved (R) inner surface
- Fin spacing 2.1 mm
- Fan motors 350 mm diameter, 4 and 6 poles, 1 to 2 x 3 motors
- Noise From 28 dB(A)
- Included Pump
- Not included 3-core mains cable, 2 x 13 amp UK plugs, fan/pump...
- Siting Outdoors, closed glycol or water loop
- Coverage, 4.5kW Compact Vertical 1 x OptiClimate 2000 or 3500
- Coverage, 9kW Compact Vertical 1 x OptiClimate 6000
- Coverage, 12kW Industrial Vertical 1 x OptiClimate 10000 or 2 x 6000
- Coverage, 14kW Compact Vertical 1 x OptiClimate 10000 or 2 x 6000
- Coverage, 17kW Industrial Vertical 1 x OptiClimate 15000
- Coverage, 18kW Compact Vertical 1 x OptiClimate 15000
- Coverage, 32kW Compact Vertical 2 x OptiClimate 15000
- Coverage, 32kW Industrial Horizontal 2 x OptiClimate 15000
- Coverage, 32kW Industrial Vertical 2 x OptiClimate 15000
- Noise, 4.5kW Compact Vertical 28 dB(A)
- Noise, 9kW Compact Vertical 31 dB(A)
- Noise, 12kW Industrial Vertical 32 dB(A)
- Noise, 14kW Compact Vertical 33 dB(A)
- Noise, 17kW Industrial Vertical 32 dB(A)
- Noise, 18kW Compact Vertical 34 dB(A)
- Noise, 32kW Compact Vertical 36 dB(A)
- Noise, 32kW Industrial Horizontal 40 dB(A)
- Noise, 32kW Industrial Vertical 40 dB(A)
- Power, 4.5kW Compact Vertical 60 W
- Power, 9kW Compact Vertical 120 W
- Power, 12kW Industrial Vertical 270 W
- Power, 14kW Compact Vertical 180 W
- Power, 17kW Industrial Vertical 270 W
- Power, 18kW Compact Vertical 240 W
- Power, 32kW Compact Vertical 360 W
- Power, 32kW Industrial Horizontal 600 W
- Power, 32kW Industrial Vertical 600 W
- Water content, 4.5kW Compact Vertical 2 L
- Water content, 9kW Compact Vertical 4 L
- Water content, 12kW Industrial Vertical 6 L
- Water content, 14kW Compact Vertical 6 L
- Water content, 17kW Industrial Vertical 11 L
- Water content, 18kW Compact Vertical 8 L
- Water content, 32kW Compact Vertical 21 L
- Water content, 32kW Industrial Horizontal 21 L
- Water content, 32kW Industrial Vertical 21 L
OptiClimate Revomax II Grow Room Air Conditioner
- Modes Heating, cooling, dehumidifying, circulating, fil...
- Inverter Infinity DC inverter, 30-100% cooling capacity
- Minimum turndown 20-30% cooling capacity
- Filtration Built-in carbon and dust filters
- Control Revomax Smart Remote Controller, secure internet ...
- Safety Temperature protection, water leak safeguard, fir...
- Installation Water-cooled inlets or air-cooled split unit
- Models 6000, 10000, 15000S, 15000T, 21000T, 30000T
- Lighting suitability Optimised for LED grow light systems
- Delivery arrives on a pallet
- Cooling capacity, Opticlimate 6000 Revomax2 6 kW / 20,500 BTU (7 kW max)
- Cooling capacity, Opticlimate 10000 Revomax2 10 kW / 34,100 BTU (12 kW max)
- Cooling capacity, Opticlimate 15000S Revomax2 15 kW / 51,200 BTU (19 kW max)
- Cooling capacity, Opticlimate 15000T Revomax2 15 kW / 51,200 BTU (19 kW max)
- Cooling capacity, Opticlimate 21000T Revomax2 21 kW / 71,700 BTU (23 kW max)
- Cooling capacity, Opticlimate 30000T Revomax2 30 kW / 102,400 BTU (35 kW max)
- Cooling water, Opticlimate 6000 Revomax2 2-4 L/min
- Cooling water, Opticlimate 10000 Revomax2 3-6 L/min
- Cooling water, Opticlimate 15000S Revomax2 3-10 L/min
- Cooling water, Opticlimate 15000T Revomax2 3-10 L/min
- Cooling water, Opticlimate 21000T Revomax2 3-12 L/min
- Cooling water, Opticlimate 30000T Revomax2 3-20 L/min
- Dehumidification, Opticlimate 6000 Revomax2 85 L/24h
- Dehumidification, Opticlimate 10000 Revomax2 142 L/24h
- Dehumidification, Opticlimate 15000S Revomax2 213 L/24h
- Dehumidification, Opticlimate 15000T Revomax2 213 L/24h
- Dehumidification, Opticlimate 21000T Revomax2 298 L/24h
- Dehumidification, Opticlimate 30000T Revomax2 425 L/24h
- Heating, Opticlimate 6000 Revomax2 3 x 1,300 W ceramic (3.9 kW)
- Heating, Opticlimate 10000 Revomax2 3 x 1,600 W ceramic (4.8 kW)
- Heating, Opticlimate 15000S Revomax2 3 x 2,700 W ceramic (8.1 kW)
- Heating, Opticlimate 15000T Revomax2 3 x 2,700 W ceramic (8.1 kW)
- Heating, Opticlimate 21000T Revomax2 3 x 2,700 W ceramic (8.1 kW)
- Heating, Opticlimate 30000T Revomax2 3 x 3,700 W ceramic (11.1 kW)
- Power, Opticlimate 6000 Revomax2 1,300 W rated, 1,900 W max cooling
- Power, Opticlimate 10000 Revomax2 2,100 W rated, 3,500 W max cooling
- Power, Opticlimate 15000S Revomax2 5,000 W rated, 6,500 W max cooling
- Power, Opticlimate 15000T Revomax2 5,000 W rated, 6,500 W max cooling
- Power, Opticlimate 21000T Revomax2 6,000 W rated, 6,300 W max cooling
- Power, Opticlimate 30000T Revomax2 9,000 W rated and max cooling
- Power supply, Opticlimate 6000 Revomax2 230-400 V, 1 or 3 phase
- Power supply, Opticlimate 10000 Revomax2 230-400 V, 1 or 3 phase
- Power supply, Opticlimate 15000S Revomax2 230-400 V, 1 or 3 phase
- Power supply, Opticlimate 15000T Revomax2 400 V, 3 phase
- Power supply, Opticlimate 21000T Revomax2 400 V, 3 phase
- Power supply, Opticlimate 30000T Revomax2 400 V, 3 phase
Heaters and thermostats
Tube, fan and oil-filled
Out of stock
Lighthouse Ecoheat Thermostatic Tube Heater – Digital Timer
- Brand Lighthouse
- Type Heating
- Options 4 to choose from
- Price from £29.49
- Availability Out of stock
Grow Gadgets Tube Heater – Radiant Grow Room Heating
- Brand Grow Gadgets
- Type Tubular radiant grow room heater
- Range 60W / 310mm, 120W / 610mm, 180W / 910mm, 240W / 1...
- Heat style Even radiated warmth, radiator-like, no concentra...
- Protection Splash-resistant sealed unit
- Control Thermostat compatible; low wattage suits most timers
- Mounting Plastic feet, or screw-fixed to wall or floor
- Target temperatures 25-28C lights-on, 18C lights-off
Grow Gadgets Greenhouse Heater – With Thermostat for Winter
- Heat settings fan only / fan + 1 element / fan + 2 elements
- Thermostat adjustable dial control
- Safety automatic thermal cut-out with auto-restart
- Water resistance IP24
- Construction steel housing, guarded element and fan
- Use indoor only — grow rooms, sheds and greenhouses
TrolMaster Hydro-X TS-2 Thermostat Station – HVAC Control
- Output Voltage 24V
- Maximum Current 1A
- Input Voltage 240V AC, 50/60Hz
- Operating Temperature 0-50°C
- Maximum Humidity ≤90%
- Connectivity RJ12 (plug & play)
- Updates MicroSD firmware slot
- Dimensions 160mm x 86mm x 86mm
- Controls HVAC, heat pump and multi-stage systems
- Max per controller up to 4 TS modules per Hydro-X
- Sensor none - uses the Hydro-X room sensor
- Compatibility TrolMaster Hydro-X control systems
- Included cables 16 ft RJ12, 4 ft RJ12, RJ12 T-splitter
- Wiring colour-coded 24V thermostat cable
Out of stock
VIVOSUN AeroFlux Smart Grow Tent Heater – 700W, VPD Control
- Model VIVOSUN AeroFlux W70
- Power 700W PTC heating with PWM control
- Heat levels 5
- Control temperature or VPD target; day/night Recipe modes...
- Connectivity Wi-Fi to the VIVOSUN app, no controller needed; p...
- Sensor Enviro-Probe temperature and humidity sensor, 3m ...
- Grow space tents up to 1.5 x 1.5m (5 x 5ft)
- Size approx. 24 x 24 x 12cm
- Hoses attached hose 12–44cm; extension hose 31–114cm, 6...
- Safety V0 flame-retardant housing, tip-over shut-off, ov...
- In the box heater, Enviro-Probe sensor, extension hose, air ...
Out of stock
Root!T Heat Mat Thermostat – Propagator Temperature Control
- Input 230V / 50Hz
- Maximum load 1000W / 4.3A
- Setting range 10–30°C (50–86°F)
- Display digital, °C or °F, with HEATING and POWER indicators
- Sensor remote temperature probe with rubber sucker
- Controls SET, UP and DOWN buttons
- In the box thermostat unit with plug, output socket and temp...
- Use indoor use; keep the thermostat body and socket d...
- Warranty 1 year
- Brand Root!T (HydroGarden)
Hylite Slimline Ecoheater Tube Heater – Built-In Thermostat
- Brand Hylite
- Range Slimline Ecoheater with thermostat
- Length and power 300mm – 28W · 500mm – 55W · 750mm – 90W · 1000mm ...
- Tube diameter 40mm
- Thermostat built-in adjustable dial with indicator light
- Thermostat operation on below approx. 20°C at the minimum setting; max...
- Ingress protection IP44
- Safety automatic heat-sensitive cut-out; CE certified, B...
- Supply 230V, 1.5m cable with fitted UK plug
- Mounting wall brackets and floor stands supplied
Hotbox Superb 2.8kW Fan Heater – For Greenhouses & Sheds
- Heat output 2.8kW, half/full switchable
- Airflow 450 m³/h (250 CFM)
- Voltage 230V, 6A or 12A
- Size 27cm diameter x 50cm length
- Weight 6.1kg
- Construction stainless steel, sealed elements
- Certification CE and RoHS
Grow Gadgets Temperature Controller – Plug Socket For Heater
- Modes heating or cooling
- Temperature range -9°C to 60°C
- Accuracy ±1°C
- Maximum load 3,500W
- Power supply 220-240V, 50Hz
- Includes remote temperature probe, memory function
Gorilla 2kW Fan Heater – Tall Black, Thermostat Control
- Power 2kW max output
- Settings fan-only / low heat / high heat
- Thermostat adjustable mechanical
- Heating area up to 20m²
- Protection rating IP24
- Weight 2.8kg
- Colour black
Cli-Mate 16A Temperature Controller – Grow Tent Thermostat
- Maximum load 16A / 3600W (3.6kW)
- Control type on/off temperature switching
- Probe 5m remote temperature probe, included
- Plug UK mains plug
Gorilla 2kW Heater – for Grow Tents & Rooms
- Power 2kW, two heat settings
- Air displacement 120 m³/hr
- Heating area up to 40 m³
- Protection rating IP21
- Safety thermal cutout
- Dimensions 19.7 x 19.7 x 20.5cm
- Weight 2.06kg
- Colour orange
Ora 2kW Fan Heater – Grow Room Thermostat Control
- Brand Ora
- Type Heating
- Price from £35.49
- Availability In stock
Lighthouse Oil Filled Radiator – Adjustable Thermostat
- Brand Lighthouse
- Type Heating
- Options 2 to choose from
- Price from £32.49
- Availability In stock
Climate controllers and sensors
VIVOSUN GrowHub E25 Controller – Grow Room Environment
- Type plug-in Wi-Fi controller (dongle)
- Connection USB Type-C into the SGS device
- Compatible with VIVOSUN AeroLight, AeroZesh, AeroWave E (SGS devi...
- Control VIVOSUN app over Wi-Fi
- Works with GrowHub E42 / E42A as an expansion port
- Indicator status light, one button for Wi-Fi setup
TrolMaster BETA-4 Day/Night Temperature Controller
- Input voltage 240V AC
- Output switch Triac
- Maximum device load 10A
- Fuse rating 6A / 250V
- Temperature control range 40-100°F
- Temperature deadband 5°F
- Power cord length 1.8m
- Dimensions 27.5cm (L) x 8.7cm (W) x 9.4cm (H)
- Controls any heating or cooling device up to 10A
- Sensor remote plug-in temperature probe
- Maximum humidity ≤90% RH
- Display digital display with built-in photocell
- Operating temperature 0-40°C (32-104°F)
- Weight 0.56 kg
TrolMaster DST-2 Temperature Device Station – For Hydro-X
- Function switches heating or cooling equipment via Hydro-X
- Socket type UK 3-pin
- Load rating up to 10 A at 240 V
- Connection RJ12 to Hydro-X controller
- Indicator LED power status light
- Included cables 16 ft RJ12, 4 ft RJ12, RJ12 T-splitter
- Sensor none - uses the Hydro-X room sensor
- Output voltage 240V AC, 50/60 Hz
- Display LED status; settings on the controller
- Compatibility TrolMaster Hydro-X control systems
- Power supply 240V AC, 50/60 Hz
- Dimensions 85 x 80 x 90 mm
- Operating temperature 0-50°C (32-122°F)
- Weight 0.34 kg
Out of stock
Dimlux Temperature Sensor – Dimlux Maxi Controller Sensor
- Type Ambient air temperature sensor
- For Dimlux Maxi Controller
- Cable length 5m or 10m
- Controller response dims lights above the set point; switches half th...
- VPD calculated by the Maxi Controller when used with ...
- Connection plug-in lead to the Maxi Controller
Dimlux Fan Aux Box 15A – Fan Speed Controller
- Compatibility Dimlux Maxi Controller EVO (Aux/Fan output)
- Outputs 3 UK sockets – Fan, RH, Heater
- Rating 15A per output
- Fan control electronic, silent-running
- Temperature control SmartLogic
- Humidity control separate day and night RH settings
- Weight 0.5kg
Control Freak Dynamic Frequency Fan Speed Controller
- Control method Dynamic frequency with digital temperature sensing
- Versions 3A, 7A and 13A
- Per socket rating 1.5A (3A unit), 3.5A (7A unit), 6.5A (13A unit)
- Fan compatibility Any AC fan
- Modes Automatic and manual
- Adjustable Temperature range, minimum and maximum fan speed
- Sensor cable 5m
- Noise Silent, no humming or buzzing
- Requirement Intake fan needed to maintain negative pressure
Dimlux Maxi Controller v1.2 – Climate & Light Control
- Version v1.2
- Fixture capacity Up to 160 Dimlux Expert fixtures or Xtreme ballasts
- Controls Lighting, CO2, heating, humidity, fans
- Monitors CO2, vapour pressure deficit (VPD), plant tempera...
- Light control Silent built-in timer, variable output, sunrise a...
- Temperature protection Auto dimming, then half or all fixtures switched off
- Cycle options Asynchronous timing, e.g. 10 hours on / 10 hours ...
- CO2 sensing Optional dual beam sensor, controls CO2 generator...
- Expansion modules Aux Box, Fan/Aux Box, CO2 sensor, CO2 Gas Protect...
- Fixture outputs 2 x OUT, up to 60 fixtures each
- Legacy HPS capacity Up to 80 ballasts on the 2-core port
- Power supply 16 V DC power adapter
- Add-on control Smartbox 0/2 (Aux Box) over RJ10
- Climate control Smartbox 6/3 for heat, cool and humidity
- Second controller ABP port, copy or invert modes
- Third-party control Modbus RTU, 9600 8N1, reply under 200 ms
- Display LCD status screen, 5 buttons, power LEDs
- Fixture cabling RJ45 Interlink, daisy chained
- Fixture compatibility Expert HPS, Xplore LED, XtremeII LED
- Max fixtures 120 per controller, 240 with a 2nd unit
- Sensor ports Temperature, RH/T2, CO2, plant-temp IR
Growlink ClimaLINK Climate Sensor – Humidity, Light and VPD
- Measures Temperature, humidity, light, optional CO₂
- Temperature Range -40 to 125°C, accuracy ±0.1°C
- Humidity Range 0 to 100% RH, accuracy ±1.0%
- CO₂ Range (optional) 0 to 5,000 ppm, accuracy ±3%
- VPD Calculated automatically
- Sensor Design Aspirated, with protective dust and moisture filters
- Dimensions 23.5 x 11.1 x 9.5 cm (9.25 x 4.375 x 3.75 in)
- Included ClimaLINK sensor and 5m M8 connection cable
- Requires CanopyLINK 8-Port Sensor Hub (not included)
- Platform Growlink OS
- Power input 24 V DC
- CO₂ compensation, With CO2 Sensor Pressure compensated at any altitude
- Light reading Light level, reported in Lux
- Operating temperature 10 to 50°C (50 to 122°F)
- Origin Made in USA
Installation parts and spares
Grow room temperature control, winter and summer
Most UK grow rooms have two separate temperature problems, and buying for only one of them is the usual mistake. In winter, lights-off drops the room well below where roots stay active, and an unheated tent in a garage or loft can swing ten degrees between periods. In summer, the lights and the incoming air work against you at the same time and extraction alone runs out of headroom.
For heat, tube heaters are the standard tent answer because they are low wattage and spread warmth along a length rather than blasting one spot. The Lighthouse Ecoheat comes with a digital timer, and the thermostatic version holds a set point instead of running flat out. An oil filled radiator suits a larger room that needs real output, and the Ora 2kW fan heater moves warm air about rather than radiating it. Whatever you fit, put it on a thermostat: the Lighthouse Wireless Thermostat stops a heater and an extractor fighting each other all night.
For cooling, the OptiClimate units on this page condition the air rather than exchanging it. If you would rather measure before you spend, the Growlink ClimaLINK sensor and the VIVOSUN GrowHub E25 log temperature and humidity so you can see the real swing instead of guessing at it. See fan controllers for holding a set point with extraction, and our tent cooling guide for the summer end. Free UK delivery over £99.