Buyers Guide to Solar Immersion Controllers

List of Top Rated Solar Immersion Controller from thousands of customer reviews & feedback.

Updated On Sep 2025

2,155 Reviews Studied

By Customer Ratings

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New - Solar iBoost+ Plus - DUAL Immersion Controller / Optional iboost Monitor & Remote by Srltec Read Review

  • New - Solar iBoost+ Plus - DUAL Immersion Controller / Optional iboost Monitor & Remote
  • 100 x 85 x 40
  • Cream
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Inkbird ITC-308S Dual Relay Digital Temperature Controller Greenhouse Thermostat for Heating Cooling Device Pre-wired Se... Read Review

  • 【Plug-and-play design】Easy to use, just plug into your heating/cooling devices and set the target temperature, then it works, NO WIRING.
  • 【Wide Range】 Food grade stainless steel probe temperature range is -50~120 °C / -58~248 ° F with high accuracy: ± 1 ° C (-50 ~ 70 ° C) / ± 1 ° F (-50 to 160 ° F) . Dual display window are displayed in a position to the measured temperature and set temperature simultaneously.
  • 【2 sockets outputs】With 2 sockets output, one for heating and another one for cooling. Heating/Cooling differential function could be set separately for refrigeration and heating to protect temperature controller from violent change.Also, compressor delay protection for compressor control.
  • 【Temperature Alarms】Protect your fish with a safe and healthy environment, With high and low temperature alarms,sensor fault alarm,over temperature alarm.
  • 【Warm Tips】Waterproof IP68 NTC probe but the temperature controller isn't Waterproof, can submerge sensor probe into fish tank, but please don't submerge controller in water. :)
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HBN 24 Hour Indoor Energy Saving Mechanical Immersion Heater Segment Timer Switch with Waterproof Cover, White, 16 Amps Read Review

  • 【 Easy to Use】: Complete instructions provided in packaging. This timer switch can be set for appliances to on/off 48 times a day. You can set your own schedule for when to activate or deactivate the devices.
  • 【Product Features】: Wire connection; 48 ON/OFF per day; With load indicator; With ON/OFF/Timing switch knob; With transparent cover; Depth: Min.15MM; Min. Setting time: 15 minutes; Max. Setting time: 24 hours.
  • 【Multi Purpose】: Can be used for controlling corridor light system, water pump system, heating/cooling system, security system, advertising board lighting controlling, exhaust system etc.
  • 【Make Your Life More Convenient】: This timer switch automatically turns your appliance on and off, eliminating the need to manually switch each time, reducing energy consumption and saving energy costs.
  • 【Satisfaction Guarantee】: CE Certificated ensure its safety. Please be assured purchase, this timer would be a good helper for your daily life.
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MISOL 220V controller of solar water heater, used for separated pressurized solar hot water system Read Review

  • 220v controller for the solar hot water heating system suitable for 1 collector array * 1 storage tank * 1 pump and auxiliary heating
  • Appearance of controller 187mm*128mm*46mm
  • 1*Pt1000 sensor (less than 500 cel.degree) for collector (silicon cable less than 280 cel.degree)
    2*NTC10K, B3950 sensor (less than 135 cel.degree) for tank, (PVC cable less than 105 cel.degree),
  • Accuracy of temperature measuring: +/-2 Cel. Degree
  • Range of collector temperature measuring: -10 to 220 Cel. degree
    Range of tank temperature measuring: 0 to 110 Cel. Degree
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MISOL CONTROLLER of SOLAR WATER HEATER / 3 SENSORS / 220V / for Split Pressurized Solar Water Heater Read Review

  • 220v controller for seperated pressurized solar water heating system suitable for 1 collector array * 1 storage tank * 1 pump and auxiliary heating
  • Display dimension: 120mm x 120mm x 18mm
  • 1 * Pt1000 sensor ( less than500 cel.degree) for collector (silicon cable less than 280 cel.degree),
  • 2 * NTC10K, B3950 sensor (less than 135 cel.degree) for tank, (PVC cable less than 105 cel.degree),
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WINGONEER AC 220V 4000W High Power SCR Electronic Voltage Regulator Governor Dimmer Thermostat Speed Controller Read Review

  • Adopts double insulation; there will be no electric leakage if short-circuit or SCR burn out.
  • Can prevent peak voltage and electrical surge; RC absorption and fuse enhance usage safety.
  • Aluminum case prevents it from easy damage; filled tin prevents it from heating when in huge current.
  • With protective cap and connection post; thicker and larger heat sink.
  • Wide application: electric furnace, water heater, lamps, small motor, electric iron etc.
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Inkbird ITC-308 Digital Temperature Controller Thermostat Dual Relays Heating Cooling 220V Plug Read Review

  • Plug the heater/cooler in sockets at the ITC-308, set your desired temperature and you're done.
  • Dual relay output to connect in a position with refrigeration and heating systems at the same time.
  • Heating / Cooling differential function can be set to protect separately for cooling and heating for temperature control of violent change.
  • Compressor delay protection for compressor control.
  • Inkbird temperature controller is Ideal thermostat for homebrewing, fermentation,beer/wine storage,aquarium heater/fans,greenhouse heat mat, heating pad ect
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Solar iBoost – Free Hot water from your PV / Solar Array - Immersion controller Read Review

  • A solar Immersion controller that is simple to install.
  • Wireless sensor clamp - Ensuring only surplus energy is used
  • Use your existing immersion heater and hot water tank
  • Increase your return on investment
  • Built in hot water timer with added Boost function
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Solar Driveway Alarm,PHYSEN Wireless Driveway Security Alert System,1 Outdoor Weatherproof Rechargable Solar PIR Motion... Read Review

  • ☼【Solar Powered PIR Driveway Alarm】-PHYSEN solar PIR motion sensor is powered by the built-in rechargeable lithium battery via solar panel, no need to replace battery. It can work day and night, even in cloudy and rainy days. IP55 weatherproof design enables the motion detector to work perfectly outdoor. Great choice for House/Garage/Villa/Gate/Garden/Store/Yard/etc.
  • ☼【650FT Working Range】-High precision wireless driveway alarm system, low-rate false alarm. The working range from the detector to the receiver can reach up to 650ft/200m in the open area, 16ft detecting range, 30° up and down & 60° left and right detection angle, ideal for driveways, walking paths.
  • ☼【58 Unique Chimes & 5 Volume Levels】-58 unique chimes allow you to change ring tones freely, and 5 Volume Levels from 0dB to 110dB can meet your different needs. The LED light indicator flashes to perform a visual alert, excellently offer security alert for the hearing impaired. If you don't want to be disturbed, you can also choose Mute Mode for the receiver.
  • ☼【Expandable Security Alert System】- Build your own security alert system by pairing more motion sensors, push buttons or receivers. It is able to expand up to 50 sensors or push buttons and unlimited receivers for complete coverage of your property.
  • ☼【Easy to Install】-Plug the receiver into socket, take off the back cover of sensor and turn on the switch, then you will see the PIR sensor flash. Next mount the detector anywhere you want with attached screws. Now your driveway alarm system begin to work. We will offer 1 Year After-sale Service, if you have any problems, please contact us freely!

Buyers Guide to Solar Immersion Controllers - How They Benefit You and Factors to Consider

Are you looking for a way to reduce your energy bills? You may want to consider investing in a solar immersion controller. This device helps homeowners and business owners take advantage of solar power, even on cloudy days. This buyer's guide will discuss what solar immersion controllers are and the factors you should consider before purchasing. We will also answer some frequently asked questions about these devices.

What is a Solar Immersion Controller?

A solar immersion controller is a device that uses the excess heat generated by solar photovoltaic panels to heat water via the immersion heater. This can be used to heat your home or business, reducing your reliance on fossil fuels. Solar immersion controllers are becoming increasingly popular as the cost of solar panels has decreased. The reducing cost of solar panels has also encouraged the use of solar car battery chargers with charge controllers, which also work on a similar principle.

What are the factors to consider before buying one?

You should keep in mind a few things before purchasing a solar immersion controller:

1) Temperature sensor

A solar immersion controller needs a temperature sensor to determine when to turn on the immersion heater. The most common type of sensor is a thermistor, which measures the temperature of the water passing through it. The temperature sensor can also be helpful in homes regulated by a 4g Solar Security Camera to maintain a comfortable temperature.

2) Compatibility with immersion heater

The solar immersion controller must be compatible with the type of immersion heater you have. Some old models of immersion heaters may not be compatible with newer solar controllers.

3) Ease of monitoring and controlling

The solar immersion controller should be simple to monitor and control. This control can be done via a mobile app, web portal, or physical display on the device itself. Depending upon your needs, you may want to consider a controller with Wi-Fi capabilities so that you can monitor and control it from anywhere.

4) Process of installation

Installing a solar immersion controller can be difficult if you are not familiar with electrical work. Hence, go for a model that understands the burden of installation and has developed a model with an optimized design. Make sure to read the instructions carefully or hire a professional to do the installation.

5) Wireless technology

Some solar immersion controllers come with wireless technology, which eliminates the hassles of wiring. This can be helpful if you are not familiar with electrical work or have pets or children who could be harmed by exposed wires.

Conclusion

Solar immersion controllers can be a great way to reduce your energy bills and take advantage of solar power, even on cloudy days. Before purchasing a solar immersion controller, keep in mind the factors mentioned above.