A greenhouse can become too hot for you and your plants very quickly without a properly sized ventilation system to provide adequate cooling. An exhaust fan system or automated roof vents can provide all of the needed ventilation / cooling during cooler seasons, but cooling in the summer can be much more difficult. A combination of shade, proper ventilation, and an evaporative cooling system like a misting system or evaporative cooler is recommended when outside temperatures begin to heat up.


Products 49-68 of 68
Show
Gigavent Auto Vent Opener vent, window, opener, roof, automatic, solar, auto, greenhouse, cold, frame, gigavent, wax
Price: $125.00
review-star review-star review-star review-star review-star
(2)
Availability: Out of Stock
Item #: 8040150 -

    This is the strongest vent opener available with a lifting capacity of 65 lbs. It has a hydraulic cylinder which provides superior protection in windy areas. Opening temperature can be adjusted from 56° F to 70° F and maximum opening of 18" is reached at approximately 20° F above opening temperature. Gigavent cylinder can be located in many different positions for maximum mounting flexibility. This model is too large for use with all of our greenhouses except some of the Cross Country...

    Heavy Duty 24 Hour Grounded Timer timer, 24, hour, light, plant, grow, auto, greenhouse, heavy, duty, 120, volt
    Price: $15.95
    review-star review-star review-star review-star review-star
    (1)
    Availability: In Stock - Usually ships in 1 to 2 days.
    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

      JDDT1 Adjustable Digital Thermostat (Wired) thermostat, water, proof, greenhouse, remote, sensor, j&d, temperature, control, digital, adjustable
      Price: $105.00
      review-star review-star review-star review-star review-star
      (1)
      Availability: In Stock - Usually ships in 1 to 2 days.
      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
        Price: $125.00
        Availability: In Stock - Usually ships in 1 to 2 days.
        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
          review-star review-star review-star review-star review-star
          (2)
          Availability: In Stock - Usually ships in 1 to 2 days.
          Item #: 48202 -

            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 TS110 Waterproof Heating / Cooling Thermostat
            Sale!
            Retail: $38.89
            Price: $31.95
            review-star review-star review-star review-star review-star
            (9)
            Availability: In Stock - Usually ships in 1 to 2 days.
            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, 4820940, 4820945
              Sale!
              Retail: $59.95
              Price: $45.95
              review-star review-star review-star review-star review-star
              (19)
              Availability: In Stock - Usually ships in 1 to 2 days.
              Item #: 48209 -

                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 - Usually ships in 1 to 2 days.
                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...

                  24" Inflation Jumper Hose
                  Price: $19.95
                  review-star review-star review-star review-star review-star
                  (2)
                  Availability: In Stock - Usually ships in 1 to 2 days.
                  Item #: 8030130 -

                    The jumper hose is used to allow inflation of side and end walls with one blower.

                    7 Day Programmable Timer timer, programmable, grow, light, plant, greenhouse, mist, misting
                    Price: $24.95
                    Availability: In Stock - Usually ships in 1 to 2 days.
                    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 ...

                      Greenhouse Inflation Blower Fan inflation, fan, blower, greenhouse, CFM, plastic, inflate, poly, air, adjustable
                      Price: $74.95
                      Availability: In Stock - Usually ships in 1 to 2 days.
                      Item #: 8030100 -

                        This blower is used for inflating two layers of polyethylene on a greenhouse. The air space between the two layers provides the greenhouse with insulation. Fan has an adjustable inlet for obtaining proper operating pressure and can be used to inflate the plastic on greenhouses up to 30' x 100'. 4" diameter mounting flange. Requires 110/120 volt electricity. Power usage is 0.23 amps. 50 CFM max output, 32 CFM at 0.4" SP

                        Grow More Univent Automatic Vent Opener grow, more, greenhouse, kits, vent, opener, univent, automatic, solar, window, harvest
                        Price: $39.95
                        review-star review-star review-star review-star review-star
                        (4)
                        Availability: In Stock - Usually ships in 1 to 2 days.
                        Item #: 2532031 -

                          The Univent allows solar-powered control of top and side mounted window vents thanks to its dual springs. Univent window openers have an adjustable opening temperature of 60° F to 75° F and an 18" maximum opening which would be reached at approximately 20° to 30°F above opening temperature. Univents are made from corrosion resistant materials including aluminum and stainless steel. This model is recommended for use with Grow More and Solar Harvest greenhouse vents because they include a...

                          Inflation Blower Mounting Bracket
                          Price: $19.95
                          review-star review-star review-star review-star review-star
                          (2)
                          Availability: In Stock - Usually ships in 1 to 2 days.
                          Item #: 8030110 -

                            This bracket allows mounting of an inflation blower to the greenhouse frame and provides separation of the 2 layers of poly film on the greenhouse so that air can be pumped in between them. The air space between the two layers provides the greenhouse with insulation reducing heating costs. Inflation blower not included Inflation Fan Mounting Bracket Instructions ...

                            SureStat T110 Weatherproof Heating / Cooling Thermostat thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control
                            Price: $39.95
                            review-star review-star review-star review-star review-star
                            (5)
                            Availability: In Stock - Usually ships in 1 to 2 days.
                            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 Cooling Thermostat thermostat, plug, in, prewired, cord, line, voltage, heater, fan, cooling, control, portable, 110, 120
                              Price: $55.95
                              review-star review-star review-star review-star review-star
                              (4)
                              Availability: In Stock - Usually ships in 1 to 2 days.
                              Item #: 4820410 -

                                UPDATEThis has been replaced by the Surestat TS116 thermostat. Click here to view the updated version.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. Cooling thermostat is great for automating fans and/or louvers. Features Wide temperature range: 30° to 110° F Fixed 3 degree differential Plug-N-Play, no wiring...

                                Bayliss MK7 Replacement Power Tube bayliss, mk7, power, tube, cylinder, replacement, spare, piston, vent, opener, rod, part
                                Price: $27 - $30
                                review-star review-star review-star review-star review-star
                                (16)
                                Availability: In Stock - Usually ships in 1 to 2 days.
                                Item #: 804011 -

                                  Bayliss power tube life is not infinite. Over the years, the piston moving through the seals gradually wears the seal material away, allowing a gradual seepage of wax out of the tube. This in turn reduces the pressure within the tube and eventually the opening distance achieved will be affected. This is when you need to replace the power tube cylinder.Bayliss MK7 power tubes are available with 2 different models. The only difference is the operational temperatures of the power tube. The Orchid...

                                  Evaporative Cooler Replacement Pads
                                  Price: $39 - $79
                                  review-star review-star review-star review-star review-star
                                  (2)
                                  Availability: In Stock - Usually ships in 1 to 2 days.
                                  Item #: 8016 -

                                    Replacement Aspen pads for evaporative air coolers. Just select the model cooler you have. You will receive a set of 3 pads which includes 2 for the side panels and 1 for the rear panel.

                                    Gigavent Replacement Power Tube gigavent, power, tube, cylinder, replacement, spare, piston, vent, opener, rod, part
                                    Price: $69.95
                                    Availability: In Stock - Usually ships in 1 to 2 days.
                                    Item #: 8040155 -

                                      This cylinder tube powers the Gigavent automatic openers with no need for electricity. It contains a mineral wax which expands with heat. This pushes a piston which opens the auto vent via a balanced linkage. As the temperature drops, the wax shrinks and a strong spring closes the vent and resets the piston. Made in Denmark.While this cylinder for the Gigavent automatic vent opener lasts a long time, eventually the piston rod moving through the seals will wear the seal material away, allowing...

                                      Univent Replacement Power Tube univent, power, tube, cylinder, replacement, spare, piston, vent, opener, rod, part, ventomax
                                      Price: $19.95
                                      review-star review-star review-star review-star review-star
                                      (6)
                                      Availability: In Stock - Usually ships in 1 to 2 days.
                                      Item #: 8040130 -

                                        This cylinder tube powers the Univent and Ventomax automatic openers with no need for electricity. It contains a mineral wax which expands with heat. This pushes a piston which opens the auto vent via a balanced linkage. As the temperature drops, the wax shrinks and a strong spring closes the vent and resets the piston. Made in Denmark. While this automatic vent opener cylinder lasts a long time, eventually the piston rod moving through the seals will wear the seal material away, allowing a...

                                        Thermostat Piggyback Cord
                                        Price: $15.95
                                        review-star review-star review-star review-star review-star
                                        (1)
                                        Availability: In Stock - Usually ships in 1 to 2 days.
                                        Item #: 48201 -

                                          These cords can be wired to the Surestat T110 or the TS110 thermostats to convert them into plug-in thermostats. They can also be used as replacement plug-in cords for the Surestat thermostats that come with a piggyback plug-in cord installed. Item # 4820188, 4820190, 4820191 Piggyback Cord Wiring for Surestat Thermostats ...