We offer a variety of electric heating solutions for greenhouses including soil heating mats and cables as well as 110 / 120 volt and 220 / 240 volt electric heaters. You can also choose from several portable plug-in thermostat controls to enhance the accurancy and reliability of your electric heating system. Not sure what size electric heater you need for your greenhouse? Our Greenhouse Heater Size Calculator can help with that.

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120v Electric Space Heater
Price: $49.95
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(4)
Availability: In Stock - Usually ships in 1 to 2 days.
Item #: 4410090 -

    Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator This 5,120 BTU portable electric heater is an economical option for heating small greenhouses. Features: multiple heat settings (1300/1500 watts), built-in dial thermostat with a 45° F to 100° F range, safety tip-over and overheat protection, quiet circulation fan which distributes heat evenly throughout structure, long-lasting permanently lubricated motor, finger-proof intake and discharge safety grills,...

    120v Stainless Steel Waterproof Heater bio, green, palma, greenhouse, heater, waterproof, 120, volt, stainless, steel, water, line, voltage
    Price: $119.00
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    (9)
    Availability: In Stock - Usually ships in 1 to 2 days.
    Item #: 4410200 -

      Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator This portable heater is made specifically for wet environments like greenhouses! It features a stainless steel housing, totally enclosed fan motor, and is completely waterproof (IPX4 rated). Another feature unique to this heater is that the fan runs continuously in heat mode providing optimal air circulation and heat distribution. Measures: 12.5"H x 10"W x 8"D. Requires 110/120 volt outlet. 12.5 amps, 1500...

      240v Electric Heater with 24v Thermostat Kit  greenhouse, heater, electric, portable, space, 220, 240, plug, in, hobby, garage, shop
      Retail: $319.00
      Price: $299.00
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      Availability: In Stock - Usually ships in 1 to 2 days.
      Item #: 4410115 -

        Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator One of the most common problems when heating with a 240 volt electric heater is finding one that can be controlled with an external thermostat at a resonable price. Look no further. This kit includes a rugged and reliable 19,107 BTU heater with our best selling Surestat TS110 thermostat. This kit gives you an adjustable 30° to 110° temperature range and allows you to place the thermostat wherever you want...

        240v Electric Space Heater greenhouse, heater, electric, portable, space, 220, 240, plug, in, hobby, garage, shop
        Price: $179.00
        Availability: In Stock - Usually ships in 1 to 2 days.
        Item #: 4410112 -

          Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator This economical heater produces 19,107 BTUs. Works great for heating small to medium greenhouses and keeping large greenhouses above freezing. Features: built-in dial thermostat (~ 60° F low), safety high temperature limit, quiet circulation fan which distributes heat evenly throughout structure (also has "fan on" setting which allows the fan to run constantly for better heat distribution instead of just...

          240v Stainless Steel Waterproof Heater Bio, Green, Phoenix, 240, volt, heater, greenhouse, stainless, steel, water, proof, electric
          Price: $279.00
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          Availability: In Stock - Usually ships in 1 to 2 days.
          Item #: 4410210 -

            Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator This heater is made specifically for wet environments like greenhouses! It features a stainless steel housing, totally enclosed fan motor, 3 selectable heat outputs, and is completely waterproof (IPX4 rated). Another feature unique to this heater is that the fan runs continuously in heat mode providing optimal air circulation and heat distribution. Comes with 6' grounded power cord and chain for optional...

            Automatic Soil Heating Cables heating, cable, soil, plant, heat, seed, starter, electric, warming, gro, quick, germination, sprouting, growing, 3034100, 3034110, 3034120, 3034130, 3034030
            Price: $27 - $40
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            Availability: In Stock - Usually ships in 1 to 2 days.
            Item #: 3034 -

              These heating cables speed seedling germination and growth with gentle bottom heat allowing you to get a head start on the growing season. They have a built-in thermostat that automatically activates the heating element if the soil temperature drops below approximately 75° F which is the optimal root zone temperature for most seedlings and starts. Cables can heat the soil 10-15° F above the air temperature. All connections are sealed and waterproof. Each heating cable includes installation...

              Heating Mats for Plants heat, heating, mat, plant, seedling, propagation, germination, diy, thermostat, best, small, greenhouse, 3035130, 3035140, 3035150, 3035160
              Sale!
              Price: $19 - $50
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              (1)
              Availability: In Stock - Usually ships in 1 to 2 days.
              Item #: 30351 -

                Plant heating mats provide bottom heat which is one of the most important and effective ways to improve plant germination and rooting. Young plants will also thrive from the warmth given by these heated grow mats. Just place tray(s) or pot(s) on heating mat, and the soil in the tray will be heated 10-20° F (without heating thermostat) above the room temperature. Instructions are printed on the waterproof mat for easy reference. 110/120 volt electricity required.Heating Mat FeaturesIncreases...

                King Pic-A-Watt 240v Electric Heater king, 240, 220, volt, electric, heater, greenhouse, space, garage, shop, small, portable, fan, room
                Price: $529.00
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                (1)
                Availability: In Stock - Usually ships in 1 to 2 days.
                Item #: 4410130 -

                  Need help sizing a heater for your greenhouse? Use our Greenhouse Heater Size Calculator This rugged heater will provide your greenhouse, garage, or shop with years of reliable heating. The King heater has an amazing 19,454 BTU output at the 5700 watt setting. Everything about this heater is high quality including the accurate capillary thermostat (Range 40° F to 90° F), sealed and permanently lubricated fan motor, delayed fan which continues to run after heater cuts off to remove heat from...

                  240v Heater Receptacle 20 Amp
                  Price: $8.95
                  Availability: In Stock - Usually ships in 1 to 2 days.
                  Item #: 4410121 -

                    This NEMA #6-20R receptacle is for the 240v stainless steel heater.

                    240v Heater Receptacle 30 Amp
                    Price: $11.95
                    Availability: In Stock - Usually ships in 1 to 2 days.
                    Item #: 4410120 -

                      This is a NEMA #6-30R receptacle and can be used with both the 240v space heater and King Pic-a-Watt heater.

                      Heating Mat & Cable Thermostat heating, cable, thermostat, mat. soil, plant, heat, seed, electric, warming, digital, plug, in, remote, sensor
                      Price: $29.95
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                      Availability: In Stock - Usually ships in 1 to 2 days.
                      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...

                        King Heater Plug In Cord Kit
                        Price: $35.00
                        Availability: In Stock - Usually ships in 1 to 2 days.
                        Item #: 4410134 -

                          The King heavy-duty plug-in cord below allows you to make the heater portable and includes a #10/3, 30 amp, 5.5' cord with NEMA #6-30P plug (for use with NEMA #6-30R receptacle) and romex connector. Wiring is required to connect the cord to the heater.

                          JDDT1 Adjustable Digital Thermostat (Wired) thermostat, water, proof, greenhouse, remote, sensor, j&d, temperature, control, digital, adjustable
                          Price: $105.00
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                          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
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                              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 T130P Portable Thermostat + Remote Sensor thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control, plug, in, portable
                                Sale!
                                Retail: $59.95
                                Price: $49.95
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                                (1)
                                Availability: In Stock - Usually ships in 1 to 2 days.
                                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: $38.89
                                  Price: $31.95
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                                  (8)
                                  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
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                                    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 TS306H Portable Thermostat + Remote Sensor thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control, plug, in, portable, heat
                                      Retail: $64.95
                                      Price: $55.95
                                      Availability: In Stock - Usually ships in 1 to 2 days.
                                      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...

                                        SureStat T110 Weatherproof Heating / Cooling Thermostat thermostat, water, proof, greenhouse, remote, sensor, surestat, temperature, control
                                        Price: $39.95
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                                        (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
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                                          (4)
                                          Availability: Out of stock until February 2022.
                                          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...