When you want to find submersible heater with thermostat, you may need to consider between many choices. Finding the best submersible heater with thermostat is not an easy task. In this post, we create a very short list about top 10 the best submersible heater with thermostat for you. You can check detail product features, product specifications and also our voting for each product. Let’s start with following top 10 submersible heater with thermostat:

Best submersible heater with thermostat

Product Features Editor's score Go to site
Tetra HT Submersible Aquarium Heater With Electronic Thermostat Tetra HT Submersible Aquarium Heater With Electronic Thermostat
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Submersible Aquarium Heater Fish Tank Thermostat with Built-in Thermometer, External Temp Controller, Digital Display, Auto Shut Off When Out of Water, 1 Protective Sleeve 2 Suction Cups (50W) Submersible Aquarium Heater Fish Tank Thermostat with Built-in Thermometer, External Temp Controller, Digital Display, Auto Shut Off When Out of Water, 1 Protective Sleeve 2 Suction Cups (50W)
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Aquarium Heater with Extra Thermometer,Submersible Fish Tank Water Heater with Adjustable Temperature 300W Aquarium Heater with Extra Thermometer,Submersible Fish Tank Water Heater with Adjustable Temperature 300W
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Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-50W Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-50W
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FREESEA Small Aquarium Betta Submersible Heater with LED Temperature Display (50-300Watt) FREESEA Small Aquarium Betta Submersible Heater with LED Temperature Display (50-300Watt)
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Uniclife 25W Submersible Aquarium Heater HT-2025 with Thermometer and Suction Cup, 5 Gallon Uniclife 25W Submersible Aquarium Heater HT-2025 with Thermometer and Suction Cup, 5 Gallon
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Hygger Submersible Aquarium Heater Fish Tank Water Heater Thermostat with Protective Sleeve Adjustable Temperature (50W for 5-15 Gallon Tank) Hygger Submersible Aquarium Heater Fish Tank Water Heater Thermostat with Protective Sleeve Adjustable Temperature (50W for 5-15 Gallon Tank)
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1500W Immersion Heater, Gesail UL-Listed Bucket Water Heater with Heating Element, Submersible Heater with Thermostat and Auto Shutoff Protection, Perfect for Home Travel and Winter Job - Silver 1500W Immersion Heater, Gesail UL-Listed Bucket Water Heater with Heating Element, Submersible Heater with Thermostat and Auto Shutoff Protection, Perfect for Home Travel and Winter Job - Silver
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Hygger Titanium Tube Marine Aquarium Heater for Saltwater, Fully Automatic Digital Control, with External IC Thermostat Controller and Thermometer, Fish Tank Submersible Heater 50W Hygger Titanium Tube Marine Aquarium Heater for Saltwater, Fully Automatic Digital Control, with External IC Thermostat Controller and Thermometer, Fish Tank Submersible Heater 50W
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Tetra Submersible Heater With Electronic Thermostat, 200-Watt Tetra Submersible Heater With Electronic Thermostat, 200-Watt
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Related posts:

1. Tetra HT Submersible Aquarium Heater With Electronic Thermostat

Feature

All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached.
The HT10 uses a built in electronic theromstat to automatically maintain water at 78 F which is ideal for most tropical fish. No adjustment is requried.
Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies
The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other dcor.
Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.

Description

All Tetra HT heaters have red/green indicator lights to let you know when the heater is heating(red) or on standby(green). The low voltage thermostat maintains water at 78F without any adjustment required. Be sure purchase the correct heater for your tank size. Buying a heater too small for your tank can cause under heating. It is critical to ensure your tank is equipped with a hood or glass canopy to contain the heat inside the aquarium. All Tetra HT Heaters will shut off if an electrical short is detected for your safety.

2. Submersible Aquarium Heater Fish Tank Thermostat with Built-in Thermometer, External Temp Controller, Digital Display, Auto Shut Off When Out of Water, 1 Protective Sleeve 2 Suction Cups (50W)

Feature

Auto Shut-offthe aquarium heater will auto shut off when it reaches to the set temp, overheating(>95F) or when the water level is lower than the water sensor at the head of heater rod. US plug, 100-120V, 5.2ft power cord
Fully Submersiblethe whole heater is waterproof, must be fully submersed under water, stick to the tank side horizontally or vertically. The rod length is various for different wattage, please check our size chart
Temp Adjustablewith internal thermometer, and a outer temp controller connected to the power cord, easy to set the heating temp from 68F to 93F. Great tank water thermostat
LED Displayclear digital display, easy to read the current water temp or the set temp by clicking the temp control button. With ON and OFF indicator light to show the working status
Multi-protectiondurable and safe fish tank heater, high-quality shatter resistant quartz glass material made, with a detachable plastic heater guard and 2 suction cups. Provides good protection for the heater and your lovely aquarium pets

Description

Hygger submersible aquarium heater is anti-explosion quartz glass made, durable and safe for use in fresh water and salty water.
It will automatically turn on and off to maintain the set temperature. With clear LED digital display, it's easy to read
the set temp or current water temp, static LED figure means the current water temp, flickering LED figure means the set temp,
just click the temp control button to switch this two display modes. The detachable heater guard shield can prevent
your turtle or fish to touch or run into the heating rod. And the 2 suction cups can stick firmly to glass/acrylic/plastic tank surface.

4 sizes available, size chart as below:
Power Wattage: 50W/100W/200W/300W
Heater length: 10.4ich/10.6inch/12.4inch/14.4inch
Fish tank size: 10-15gal/15-20gal/30-40gal/50-60gal

Overheating & out of water safety protection
When the water temp is over 95F, the LED shows E2, and over 96.8F shows E6, the heater will auto turn off and stop heating.
When the LED displays E1, it means the heater is not fully submersed, the heater is auto turn off, you should put the heater lower under the water or add more water.

Directions for Use:
1. The heater must be completely submersed under water when working.
2. Stick the heater to the side of tank horizontally or vertically.
3. Make sure the water in the tank is circulating so that the whole tank water has the same temp.
4. Before moving the heater or changing the aquarium water, please unplug the heater first and keep the heater stay in water until it cools down.
5. Expose the plastic guard shield into air may cause melting or burning when the heater is working.

Specification:
Voltage: 100-120V
Frequency: 60HZ
Cable Length: 5.2ft
Temperature range: 68F~93F (20C~34C)
Temp control accuracy: 1C up and down
Warranty period: 12 months
Package Includes: 1 x Quartz Glass Submersible Heat

3. Aquarium Heater with Extra Thermometer,Submersible Fish Tank Water Heater with Adjustable Temperature 300W

Feature

UPGRADED VERSION FOR CONTINUOUS WORKING: U-picks keeps improving best aquarium heater for your fish tank, after collecting so many comments from customers, we upgrade its function and life time, now it works more continuously and accurately.
MORE SAFETY & HIGH QUALITY: This upgraded aquarium heater now updated for more durable Quartz Glass, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger protective container updated for Anti-melting double sealed material, it is scald-preventing for your pets and your safety.
A HEATER WITH ONE FREE THERMOMETER: This fish tank heater come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze. It provide a constant warm environment for your pet fish to stay healthy, suitable both for fresh and salt water.
TEMPERATURE CONTROL: U-picks Aquarium heater works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably. Setting the temperature by the pink button on the top with range is 68F - 94F.
TANK CAPACITY: Our submersible aquarium heaters are perfect designed for different size tank, from 3 gal to 80 Gal, please choose the suitable power for your tank. And we also recommend to position it near a strong water flow, the outlet of a power filter is ideal, so that the whole aquarium are in the same temperature.

Description

You will need an aquarium heater to keep your tank in a steady and controlled temperature, as proper temperature range is very important to fish and other Aquatic in winter.
Our U-picks aquarium heater help your fish and other aquatic keeping away from stress and diseases by providing proper temperature.

Features:
1, The aquarium heater is provided with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze.
2, The aquarium heater is operating as a staged heating, once achieved the setting temperature, it will stop heating for a while, and then continue working to maintain the temperature.
3, Easy to set and adjust to the setting temperature with the use of the temperature adjustment knob, offers simple installation.
4,Strong suction cup TIGHTLY FIX the heater to the tank.

Notices:
1, Before powering, make sure the heater is completely submerged in the water.
2, Before removing the heater out from the water, make sure the heater is unplugged to avoid dry heating.
3,The aquarium heater will stop working if the outside temperature is over 94F(34C).
4, Please NOT put the aquarium heater into the sand as this will cause INACCURATE heating.

Specification:
Power: 300W
Voltage: 110V-120V, 60HZ
Heater Size: 15 x 1.35 inch

Package included:
1* Submersible Aquarium Heater
1* Thermometer
1* package box

4. Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-50W

Feature

High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.
Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 20~34C(65 F - 93 F), and the display is easy to read.
Fully Submersible. Power: 50W. Suggested water volume: 10 gal.
Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock.

Description


Product Features:

Reliable circuit and high material ensure output of the heat and keep the water temperature inside the tank steady
Temperature indicating scale can be adjusted between 20~34C(68F - 93F).
Totally submersible
Durable and safe novel design
Two suction cups easy to attach to aquarium, space saving.
Both for fresh and Salt water.
IPX 8 waterproof, insulation, not need to worry about light shock.
Power lamp indicates setting. When the heater is heating the red light is on. When the heater is not heating the red light is off.

Specification:
Power: 50W, suggest to use for 10 gal fish tank
Voltage: 220 V-240 V / 50Hz
Size: 6.89 *0.75 inch
Unplugged the appliance 10 minutes in advance of changing water

Package include:
1: 1 Aquarium Heater
2: 2 Suction Cups

5. FREESEA Small Aquarium Betta Submersible Heater with LED Temperature Display (50-300Watt)

Feature

Temperature range: 59F~94F15C~34C, 50W 75W 100W display Fahrenheit F200W 300W display Celsius C
Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.
Touch button, cyclic adjust temperature , easy to use and Safety.
The heating rods to be completely immersed in water use, you can notleave the water for heating use,Please unplug the power supply when cleaning the fish tank or aquarium water changes.
12 Month Warranty and 24 Hour Professional After-sales Service.

Description

Multi-function LED digital display heater: Use advanced IC technology, perfect design,
Oval appearance, large LED display. Clearly and accurately displays the
water temperature, highlights your aquarium.


Instructions
Temperature control switch box should be higher than water surface.
To get the best performance of heating up the aquarium , when you using this heater we suugest to use a wave maker at the same time to support water circulation.
Heater should be completely submerged in the circulating water to work properly.
Heaters can not be exposed above the water, Heaters can not working.

Warning
Please check whether this product uses a matching power grid voltage(110V/60Hz).
This product can not be repaired or modified by yourself, please ask supplier for suggestion.
Heater must be completely immersed in water, can not be exposed above water.
The heating rod is made of quartz glass assembly and cannot be easily damaged.
Turn off the power supply for 10 minutes before cleaning the tank or maintaining the heater.
When removing the heater, please don't pull the power cord directly.
The power outlet to which the product is connected must have a leakage disconnect switch.
The power socket for heater must have a broken circuit switch.

Specification:
Power: 50Watt
Voltage: 110V-120V, 60HZ
Heater Size: 2.5 x 1.5 x3.5 inch

6. Uniclife 25W Submersible Aquarium Heater HT-2025 with Thermometer and Suction Cup, 5 Gallon

Feature

EASY ADJUSTMENT: Maintains at temperatures that range from 61F to 90F (16C - 32C). A good range for most fish is 76 to 80F (25- 27C). A few species need to be kept several degrees warmer, and some species require temperatures a few degrees cooler.
SIMPLE PRACTICAL THERMOMETER --Designed to be simple to read and easy to attach (just peel and stick), the paper thin 5.2" by 0.7". Using color indication, the water temperature that the thermometer reads will change from white to a blue color. The measurement range is 64F - 93F.
FULLY SUBMERSIBLE: Water-tight sealing IP68 waterproof design, Strong suction cup clamps TIGHTLY FIX the heater to the tank vertically. Measures 8.6" x 1.2" (L x D)
HT-2025 heater is perfect for 5 gallons aquariums or aquariums up to 15 inch in length, suitable for most tropical freshwater and marine aquariums. An aquarium heater is very important for your fish tank set up if you have tropical fish.
EXPLOSION PROOF: 1.5 mm extra thick Quartz Glass is shatterproof and prevents electricity leakage. Due to made of glass, it may be damaged during shipment carelessly. Please Contact us for a free replacement or refund immediately. Comes with 1 year replacement for EXPLOSION PROOF WARRANTY

Description

SPECIFICATIONS:
Recommended Tank Size: 5 gallons
Temperatures range: 61F to 90F (16C - 32C)
Measure: 8.6" x 1.2" (L x D)
Power: 25 W
Voltage: 110~120 V 60Hz
Cable length: 5 feet

7. Hygger Submersible Aquarium Heater Fish Tank Water Heater Thermostat with Protective Sleeve Adjustable Temperature (50W for 5-15 Gallon Tank)

Feature

Hygger fully submersible heaters Includes two suction cups for mounting vertically
100% Safe: Made of high quality quartz glass, Waterproof double seal material , black protective container, shatter-resistant construction, ensures safe operation and keep your fishes from scalding and punching
Electronic thermostat for Precise temperature range between 61F and 90F (16C ~ 32C)
Apply to salt water and fresh water, easy to install and use. Provide a constant warm environment for your tropical fish to stay healthy
50 watt aquarium heater for tank capacity: 5 ~ 15 gallon; voltage/frequency: 110 120volt/60hertz

Description

Why need an aquarium heater for your fish or beta?

Fish are cold-blooded animals, which means they cannot regulate their body heat like human beings and other mammals. They need the right external temperature to survive, irrespective of whether they are in the open sea or inside an aquarium. Aquariums are man-made environment, not a natural habitat of fish, so owners of aquariums should take more effort to maintain the right water temperatures.

Submersible aquarium heaters are one of the most popular way to keep your tank at a steady and controlled temperature, Hygger Submersible Aquarium Heater carries with protective sleeve will be your best choice!

Features:
IP68 100% Waterproof, Fully Submersible
Dual Protection - Durable Quartz Glass Tube, Shatterproof construction; Double sealed material and black protective container for scald preventing and anti punching.
Accurate temperature control from 61F to 90F (16C ~ 32C)
Thermo Safety Control - This safety mechanism enables "running-dry" protection. The heater will shut off when removed from the water, and resume functioning upon return.
170cm Long Power Cord is flexible and convenient in most applications.
Suitable for both fresh and saltwater aquariums.

Specification:
Item name: Hygger Submersible Aquarium Heaters
Model: Hg - 702
Available In:
Length - 9.8", for 5~15Gallon fish tank, 50 Watts
Length - 11" , for 15~26 Gallon fish tank, 100 Watts
Length - 12.5", for 26~53 Gallon fish tank, 200 Watts
Length - 14", for 53~80 Gallon fish tank, 300 Watts

Warm Tips:
1. Please read instruction and cautions of package box carefully before use.
2. Please keep it away from children.
3. We do not recommend this heater for turtle tank. As turtle moves around and may remove the heater which cause it come out of water and burn.

8. 1500W Immersion Heater, Gesail UL-Listed Bucket Water Heater with Heating Element, Submersible Heater with Thermostat and Auto Shutoff Protection, Perfect for Home Travel and Winter Job - Silver

Feature

1)High Power: 1500W, 120V immersion water heater, heat 5 gallons of water in few minutes, depending on the volume of the water, the original water temperature and container. It will heat water continuously over 180 degrees F and towards boiling(It can't boil water).
2)Thermostat Feature - The middle stainless steel tube contains a thermal overload safety switch, when water reaches a certain temperature(about 180-194 degrees F), it can automatically cycle on and off to maintain water temperature. It will not overheating and save power.
3)Guard - The stainless-steel guard on the electric bucket heater protects the heating element from directly contacting persons or animals. The holes on the guard help release heat into the water faster.
4)Simple Operation - Immerse in water at proper level. Plug into any grounded wall outlet. Check power indicator light in plug to make sure unit is on. The cord and handle are not designed to submerge in water.
5)Safety and Widely Usage: UL-Listed, this bucket heater is safe for use in all pails, buckets and bathtubs, perfect for home, travel and winter time job.

Description

GESAIL UL-Listed Bucket Water Heater
Use for construction industry, animal husbandry, car washing, indoor use and many other jobs in cold weather. Also can be used to heat small swimming pool. Make sure your wire and plug can withstand the load of (multiple) heater(s), otherwise it may cause overheating or burn off. Especially for continuous long time use.

This immersion heater is safe to use in a variety of containers and tubs, including plastic or metal pails, buckets, just make sure your container can contain boiling water.

Bucket Water Heater is only to be immersed up to the point of the electrical connection. Water level about 8" deep, make sure the water always covers the stainless-steel guard. The cord and handle are not designed to submerge in water.

Notice: This immersion water heater can't be used in hot tubs.

9. Hygger Titanium Tube Marine Aquarium Heater for Saltwater, Fully Automatic Digital Control, with External IC Thermostat Controller and Thermometer, Fish Tank Submersible Heater 50W

Feature

For Fish Tank 5-10 Gallonvoltage 110-120V, power 50W, heater rod length 8.7inch. The heater and controller power cords are the same length 5.5ft, the thermometer cord is 4.4ft. There are mounting holes on the temp controller back for hanging on the wall
Fully Automatic Controlvery easy and reliable to use. After well installing the aquarium heater and the thermometer, you just need to set the desired heating temp, it will stop heating when the water temp reaches to the set temp,it will automatically restart heating when the water temp is 1 less than the set temp. The controller has temp setting remember function
Durable Titanium Tubethis seawater resistant titanium aquarium heater is good for use in salt water and fresh water, service life can be 3 years or more. Very compact small, easy to hide in the tank
Digital LED Displaythe IC temp controller can show the water temp and set temp at the same time, and there is a indicator light to show the heating status. You can press the 'up' key to shift degree unit between Celsius and Fahrenheit
Wide Temperature RangeWith the thermostat controller you can set the temp from 32to 104, control precision is 1, please set the right temp for your aquarium pets. The separate thermometer can detect a temperature from -68 to 140, the measurement accuracy is 0.2 plus or minus, very sensitive

Description

hygger titanium aquarium heater kits, with 1 digital thermostat controller + 2 suction cups + 1 thermometer.
Specially designed for saltwater aquariums, with temp setting remember function.


How to set the digital heater temp controller?
1. When plug in, firstly press the button "Up" to choose the temp unit pattern, or .
2. Set the temp: press the button "Set" for 2-3 seconds until the set temp led flickering, then press the
button "Down" or button "Up" to set the value to your desired temp, finally, press the "Set" button again to lock the value.
3. You can set the temp from 32to 104.

When does the heater stop and restart heating?
It will stop heating when the water temp reaches to the set temp, restart heating when the water temp is 1 less than the set temp.
There is a indicator light on the controller, when the heater is working the light is red, when it stops heating the light is off.

Directions for use
1. For better experience and safety, please carefully read and follow the user manual.
2. Please keep the heater fully submerged in water.
3. Place the thermometer away from the heater and keep water in circulation.
4. Place the heater horizontally near the water intake or on the way of water flow.
5. Please wait the heater tube to cool down before moving it or changing the water.
6. Don't bury the heater in sand or mud.
7. Please don't plug in before the heater is well installed.
8. Don't suggest for acrylic or plastic tank.
9. Please don't use the heater alone without the digital temp controller.
10. Once the controller occurs fault, please stop using it and contact the seller.

Submersible heater size chart
Voltage: AC110-120V
Wattage & fish tank size: 50W (5-10 gallon), 100W (10-25gallon), 200W (20-45 gallon)
When the weather gets cold and room temp is lower than 50, please choose a larger wattage heater than normal recommended.

10. Tetra Submersible Heater With Electronic Thermostat, 200-Watt

Feature

Electronic thermostat automatically maintains water temperature
Prevents overheating for extended heater life
Indicator light lets you know when water is being heated or when it is at the correct temperature
Silicon carbide crystals improve heat distribution and transfer
Strong glass tube is heat and shock resistant

Description

For 50 years, fishkeeping enthusiasts have looked to the Tetra name for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need-from a large variety of quality fish food and innovative equipment to test kits and decor. Keeping your tank at the proper temperature can be a large tast. You want your aquarium to be successful and sustainable for your fish, so Tetra products make it easy. Tetra Submersible Heater has an electronic thermostat that automatically maintains water temperature. The indicator light lets you know when water is being heated or when it is at the correct temperature. The strong glass tube is heat and shock resistant. The submersible heater prevents overheating for extended heater life. Silicon carbide crystals improve heat distribution and transfer. Help your fish thrive in an environment perfect for success.

Conclusion

By our suggestions above, we hope that you can found the best submersible heater with thermostat for you. Please don't forget to share your experience by comment in this post. Thank you!
Elsie Butler