Automate your greenhouse heating and cooling systems with our quality climate controls including wired and plug-in thermostats, humidity controllers, cycle timers and more. Automating greenhouse temperature and humidity control is important for maintaining the optimal environment for plants. Choose from a variety of dependable and precise climate controls below.


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Plug-in Digital Humidity Controller humidity, control, controller, humidistat, humidify, dehumidify, portable, plug, in, prewired, outlet, receptacle
Price: $49.95
Availability: In stock
Item #: 4821010 -

    This humidity controller is both a humidistat and a dehumidistat. It has separate outlets for humidify and dehumidify modes which allows you to automate both types of equipment at the same time. In Humidify mode, it can be used to turn on a device like a solenoid valve which powers a misting system when the humidity level drops below the level you select. In Dehumidify mode, the controller can turn on a circulation fan, exhaust fan, or dehumidifier when the humidity level rises...

    Plug-in Digital Temperature & Humidity Controller temperature, thermostat, humidity, control, controller, humidistat, humidify, dehumidify, portable, plug, in, prewired
    Price: $79.95
    Availability: In stock
    Item #: 4821020 -

      This unique controller can be used as both a heating or cooling thermostat and humidistat or dehumidistat at the same time! Temperature and humidity are controlled by separate outlets. No wiring is necessary. Simply plug the device you want to control into the corresponding outlet on the controller, and select the set point you want to maintain.In Heating mode, in can control electric heaters, heating mats, and cables. In Cooling mode, it can automate fans, coolers, and mist cooling...

      10 Amp Fan Speed Control
      Retail: $71.00
      Price: $59.95
      Availability: In stock
      Item #: 4820254 -

        This variable control lets you manually adjust the fan speed for fans in your greenhouse from 30% to 100% of output capacity (Minimum output depends on fan). It also has the ability to turn a fan on and off. Controller comes in a weather proof electrical enclosure suited for greenhouse environments. Great option for equipment requiring a controller that can handle higher amperages like the ACF 24" variable speed exhaust fan. Operates on 110/120 voltage up to 10 amps. Wiring required. Speed...

        ACF Fan Speed Control (5 amp)
        Price: $34.95
        Availability: Back Order
        Item #: 4820450 -

          This variable control lets you manually adjust the fan speed for exhaust and circulation fans in your greenhouse from 30% to 100% of output capacity (Minimum output depends on fan). It also has the ability to turn a fan on and off. Controller comes in weather proof electrical enclosures with watertight cover. This controller is very helpful in the winter when less ventilation is necessary and too much cold air flow at once from outside can cause temperature shock to nearby plants. Only use...

          ACF Portable Plug In Fan Speed Control (5 amp) fan, speed control, portable, plug, in, cord, exhaust, circulation, greenhouse, garage, shop, amp
          Price: $39.95
          Availability: BACK ORDERED UNTIL JUNE
          Item #: 4820460 -

            This variable control lets you manually adjust the fan speed for exhaust and circulation fans in your greenhouse from 30% to 100% of output capacity (Minimum output depends on fan). It also has the ability to turn a fan on and off. Controller comes in weather proof electrical enclosures with watertight cover. This controller is very helpful in the winter when less ventilation is necessary and too much cold air flow at once from outside can cause temperature shock to nearby plants. Only use...

            CAP Repeat Cycle Timer  repeat, cycle, timer, cap, art, dne, day, night, greenhouse, interval, adjustable, controller
            Sale!
            Retail: $79.00
            Price: $59.00
            Availability: In stock
            Item #: 4820660 -

              This cycle timer is capable of accurately cycling equipment in increments from 1 second to 40 minutes of "ON" time and 1 minute to 8 hours of "OFF" time between cycles. Timer has a built-in photosensor that cuts the timer off when it gets dark. Photosensor may be switched on or off as desired. It is ideally suited for irrigation, misting, drip, and ventilation controls to name a few. Solenoid valve is needed to automate most misting, drip, and irrigation systems. Timer plugs into a standard...

              EOS-1 Humidity Controller humidistat, control, humidity, greenhouse, plug, in, cord, portable, dehumidistat, dehumidify, eos, titan
              Sale!
              Retail: $119.00
              Price: $99.95
              Availability: In stock
              Item #: 4820750 -

                The EOS1 controller is both a humidistat and a dehumidistat. It can be changed from humidify to dehumidify and back with the flip of a switch. In Humidify mode, it can be used to turn on a device like a solenoid valve which powers a misting system when the humidity level drops below the level you select. In Dehumidify mode, the controller can turn on a circulation fan, exhaust fan, or dehumidifier when the humidity level rises above the selected level. No wiring is necessary. Simply plug the...

                Heating Mat & Cable Thermostat heating, cable, thermostat, mat. soil, plant, heat, seed, electric, warming, digital, plug, in, remote, sensor
                Price: $29.95
                (1)
                Availability: In stock
                Item #: 3035220 -

                  Recommended for greenhouse use. This heating thermostat has a probe which allows heating mats and cables to maintain a constant soil temperature in cold weather conditions. Used with heating mats or heavy-duty soil heating cables to maintain optimum rooting temperatures for faster seedling or cutting growth. 110/120 volt electricity required. (1000 watt max)Features 68° to 108° F temperature rangeDisplays current soil temperatureIncludes 5' grounded power cordComes with a 5' remote temperature...

                  Jaybird Portable Plug In Humidistat humidistat, control, humidity, greenhouse, plug, in, cord, portable
                  Sale!
                  Retail: $86.00
                  Price: $65.95
                  Availability: In stock
                  Item #: 5020610 -

                    This control is used to turn on a humidifying device like a solenoid valve which powers a misting system when the humidity level drops below the level you select (20% - 80% range). It then turns the device off after the humidity rises back to the percentage selected. No wiring is necessary. Simply plug the device you want to control into the outlet on the plug of the humidistat, and select the percentage of humidity you want to maintain. Operates on 110/120 voltage up to 6.5 amps. Humidistat...

                    Programmable Repeat Cycle Timer timer, cycle, repeat, interval, programmable, 7, day, seconds, digital, cheap, greenhouse, mist, water, misting
                    Price: $29.95
                    Availability: In stock
                    Item #: 4820355 -

                      This multifunctional timer can be used as an interval / repeat cycle timer, 7 day programmable timer, or countdown timer. The programmable timer function operates off of an internal clock and can be programmed with up to 19 different on & off settings. Each setting can be set to occur daily or during specific days of the week. The interval timer function is designed to control devices that must be activated on a repeating cycle like a solenoid valve controlling misting, drip, and irrigation...

                      Titan Controls Repeat Cycle Timer  repeat, cycle, timer, titan, spartan, cday, night, greenhouse, interval, adjustable, controller, photo, sensor, cell
                      Sale!
                      Retail: $44.95
                      Price: $28.95
                      Availability: In stock
                      Item #: 4820760 -

                        This cycle timer is capable of accurately cycling equipment in increments from 5 seconds to 30 minutes of "ON" time and 5 seconds to 60 minutes of "OFF" time between cycles. Timer has a built-in photosensor that cuts the timer off when it gets dark. Photosensor may be switched on or off as desired. It is ideally suited for irrigation, misting, drip, and ventilation controls to name a few. Solenoid valve is needed to automate most misting, drip, and irrigation systems. Timer plugs into a...

                        ACF Programmable Plug in Thermostat
                        Retail: $59.95
                        Price: $49.95
                        Availability: In stock
                        Item #: 4820530 -

                          This thermostat is very accurate and can be used to control 110/120 volt heating or cooling appliances (15 amp max). To operate, simply plug it into an outlet, and plug your appliance into the front of the thermostat! This energy-saving thermostat has up to 4 different daily temperature settings during weekdays and another 4 on weekends. The thermostat can be set to automatically lower the night temperature and raise it in the morning and you will have 2 extra settings that can be set to...

                          JDDT1 Adjustable Digital Thermostat (Wired) thermostat, water, proof, greenhouse, remote, sensor, j&d, temperature, control, digital, adjustable
                          Retail: $110.00
                          Price: $95.00
                          Availability: In stock
                          Item #: 4820075 -

                            This thermostat is very accurate and can be used to control heating or cooling equipment. It has a NEMA 4X waterproof enclosure which was developed with harsh greenhouse environments in mind (it can even be used outdoors). The JDDT1 thermostat has a 10' waterproof temperature sensor which allows you to control temperatures remotely, and it retains settings in memory in case of power failure. The current temperature is shown on the digital display when thermostat is on. FeaturesHuge temperature...

                            JDDT1 Adjustable Plug In Digital Thermostat  J&D, thermostat, digital, plug, in, portable, cord, jddt, greenhouse, waterproof, outdoor, remote, sensor
                            Retail: $128.00
                            Price: $109.00
                            Availability: In stock
                            Item #: 4820076 -

                              This thermostat is very accurate and can be used to control heating or cooling equipment. It has a NEMA 4X waterproof enclosure which was developed with harsh greenhouse environments in mind (it can even be used outdoors). The JDDT1 thermostat has a 10' waterproof temperature sensor which allows you to control temperatures remotely, and it retains settings in memory in case of power failure. The current temperature is shown on the digital display when thermostat is on. Comes with 6' plug in...

                              Portable Thermostatic Outlets
                              Retail: $24.00
                              Price: $19.95
                              (2)
                              Availability: In stock

                                Need an inexpensive and simple thermostat? Thermostatic outlets are the answer. These unique devices plug into a standard electrical outlet and have an internal preset thermostat. Outlets come in two models. The Cooling outlet supplies power at 78° and cuts off at 70° and works great for all types of fans including exhaust, circulation, window, attic, and ceiling fans. The Heating outlet supplies power at 35° and cuts off at 45° and is great for automating heaters to keep room temperatures...

                                SureStat T130P Portable Thermostat + Remote Sensor thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control, plug, in, portable
                                Sale!
                                Retail: $59.95
                                Price: $49.95
                                Availability: In stock
                                Item #: 4820425 -

                                  This thermostat comes prewired with a 5' remote sensor and a 8' cord with plug-in. Simply plug the thermostat into a standard 110/120 volt outlet. Then plug any 110/120 volt appliance into the outlet on the plug of the thermostat. This model is only available setup for heating but can be rewired for cooling (see instructions). *Plug-in thermostats can not be used with our gas heaters. They require 24 volt thermostats. Features Widest temperature range: 30° to 110° F 5' waterproof remote sensor...

                                  SureStat TS110 Waterproof Heating / Cooling Thermostat
                                  Sale!
                                  Retail: $36.89
                                  Price: $29.95
                                  (2)
                                  Availability: In stock
                                  Item #: 4820930 -

                                    SureSTAT TS110 thermostats have a watertight enclosure making them an excellent option for wet environments. The single stage thermostat can be used to automatically control ventilation fans or heaters. This thermostat was developed with the harsh greenhouse environment in mind. Temperature coil is stainless steel to prevent corrosion. SPDT switch. Wiring required. Features Wide temperature range: 30° to 110° F Fixed 3 degree temperature differential Can be used with millivolt, 12, 24 and 120...

                                    SureStat TS116 Plug In Portable Thermostat Control thermostat, plug, in, portable, control, heater, fan, greenhouse, garage, shop, room, home, ac
                                    Sale!
                                    Retail: $58.95
                                    Price: $44.95
                                    (6)
                                    Availability: In stock

                                      This single stage thermostat comes prewired with an 6' grounded Plug-in power cord. Simply plug the thermostat into a standard 110/120 volt outlet. Then plug any 110/120 volt appliance into the outlet on the plug of the thermostat. Select heating thermostat to control a heater or cooling thermostat to control fans and/or louvers. *Plug-in thermostats can not be used with our gas heaters. They require 24 volt thermostats. FeaturesWide temperature range: 30° to 110° FFixed 3 degree...

                                      SureStat TS200 2 Stage Thermostat Control thermostat, 2, two, stage, control, heating, cooling, water, proof, tight, weather, greenhouse, wet
                                      Retail: $66.55
                                      Price: $49.95
                                      Availability: In stock
                                      Item #: 4820910 -

                                        This thermostat has a watertight enclosure making them an excellent option for wet environments. The two stage thermostat can be used to automatically open motorized louvers before cutting on an exhaust fan(s), stage multiple fan or heater systems, or operate multiple speed exhaust fans that do not already have a built-in control. Wiring required. Features Wide temperature range: 30° to 110° F Fixed 3 degree temperature differential between stages Can be used with millivolt, 12, 24 and 120...

                                        SureStat TS306H Portable Thermostat + Remote Sensor thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control, plug, in, portable
                                        Retail: $64.95
                                        Price: $55.95
                                        Availability: In stock
                                        Item #: 4820925 -

                                          This thermostat comes prewired with a 5' remote sensor and a 6' cord with plug-in. Simply plug the thermostat into a standard 110/120 volt outlet. Then plug any 110/120 volt appliance into the outlet on the plug of the thermostat. This model is only available setup for heating but can be rewired for cooling (see instructions). *Plug-in thermostats can not be used with our gas heaters. They require 24 volt thermostats. Features Widest temperature range: 0° to 120° F 5' waterproof remote sensor...

                                          7 Day Programmable Timer timer, programmable, grow, light, plant, greenhouse, mist, misting
                                          Price: $24.95
                                          Availability: In stock
                                          Item #: 5620105 -

                                            This digital timer operates off of an internal clock and can be programmed with up to 8 different on & off settings per day. Each setting can be set to occur daily or during specific days of the week. Each on or off period is programmed in 1 minute increments. Timer features a heavy duty grounded outlet on the front and plugs into a standard 110/120 volt outlet (15 amp max). 7 Day Timer Instructions ...

                                            Heavy Duty Grounded Timer timer, 24, hour, light, plant, grow, auto, greenhouse, heavy, duty, 120, volt
                                            Price: $15.95
                                            Availability: In stock
                                            Item #: 5620100 -

                                              This 24 hour timer plugs directly into a wall outlet and can handle 1875 watts. You can set up to 48 cycles in 15 minute increments and set intervals from 15 minutes up to 24 hours making this timer excellent for lighting systems. No little pins to lose! Timer also features a manual override switch and LED light to indicate when power is on. 120 volt

                                              SureStat T110 Weatherproof Heating / Cooling Thermostat thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control
                                              Price: $39.95
                                              (2)
                                              Availability: In stock
                                              Item #: 4820400 -

                                                This thermostat has a weatherproof enclosure making them an excellent option for wet environments. The single stage thermostat can be used to automatically control ventilation fans or heaters. This thermostat was developed with the harsh greenhouse environment in mind. Temperature coil is stainless steel to prevent corrosion. SPDT switch. Wiring required. Features Wide temperature range: 30° to 110° F Fixed 3 degree temperature differential Can be used with millivolt, 12, 24 and 120 volt...

                                                SureStat T118P Plug In Portable Thermostat Control thermostat, plug, in, prewired, cord, line, voltage, heater, fan, cooling, control, portable, 110, 120
                                                Price: $55.95
                                                (4)
                                                Availability: In stock
                                                Item #: 4820410 -

                                                  This single stage thermostat comes prewired with an 8' grounded Plug in power cord. Simply plug the thermostat into a standard 110/120 volt outlet. Then plug any 110/120 volt appliance into the outlet on the plug of the thermostat. Select heating thermostat to control a heater or cooling thermostat to control fans and/or louvers. *Plug-in thermostats can not be used with our gas heaters. They require 24 volt thermostats. Features Wide temperature range: 30° to 110° F Fixed 3 degree...