Editor's Choice - Our Favorite Freshwater Aquarium Heaters

1. Orlushy Submersible Aquarium Heater,100W/150W/200W/300W Fish Tahk Heater with Adjust Knob Thermostat...

User Ratings: 77 3

Orlushy First Impressions

"Highly recommended."

It's only been set up for a month we'll see how well it does in a few months. This does a great job at regulating the temp in my 10 gallon. Seems to keep the temp n the tank fairly regular. But my guys don't read them and don't listen! I'm not a big fan of the big glass tubes. --Temperature adjustment labeling is on top rather than on the rod. Easy enough to let it run all the time.

• Orlushy Submersible Aquarium Heater,100W/150W/200W/300W Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups and Free Thermometer Suitable for Marine Saltwater and Freshwater
• ★300W aquarium heater is suitable for 50 to 80 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
• ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
• ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
• ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
• ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached
• Manufacture: Nova pet supplies co.LTD

• Editor's Impressions Of The Orlushy
• Heat Quality [star rating='5']
• Quality [star rating='5']
• Value For Money [star rating='4']
• Affordability [star rating='4.6']

Peoples Choice - Other Highly Rated Freshwater Aquarium Heaters

2. Orlushy Mini Aquarium Heater 50W 100W 150W,Small Fish Tank Heater with LED Digital Temperature Displ...

User Ratings: 71 7

Orlushy First Impressions

"Very pleased so far."

Also were nice along the whole process. I have a 10gallon tank that was at 72 degrees. We would consider a replacement and then we would return the defective unit. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. The temperature difference was very minor. --Temperature adjustment labeling is on top rather than on the rod. I waited a little bit to write the review so it could be accurate.

• Orlushy Mini Aquarium Heater 50W 100W 150W,Small Fish Tank Heater with LED Digital Temperature Display and External Temperature Controller for Betta Frogs Newts Turtles
• ★ 50W Submersible Aquarium Heater is Suitable for 3-10 Gallon.Temperature range: 65°F~93°F（18°C~34°C）, power cord is 5 FT.
• ★ LED Display Design: LED digital display, External temperature controller,easy to use and Safety.
• ★ The Digital Smart Aquarium Heater is a heater and thermometer combined into one, eliminating the need for more equipment in smaller tanks.
• ★ Please be sure that the heater needs to be completely sunk into water, horizontal or vertical fixed in the water cycle better place, and let the working light can be seen as clear as possible.
• ★ Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems
• Manufacture: Nova pet supplies co.LTD
• Product Dimensions: 4 x 2.75 x 1.6 inches; 8.78 Ounces

• Editor's Impressions Of The Orlushy
• Heat Quality [star rating='3.4']
• Quality [star rating='4.7']
• Value For Money [star rating='5']
• Affordability [star rating='3.4']

3. Fluval M Submersible Heater

User Ratings: 80 3

Fluval A782 First Impressions

"The seller was wonderful."

I think it works well to not stand out like other heaters. If the water runs low or air gets in the heater shuts off. I have only had minor problems with the suction cups. They promptly fixed the issue without any delays or drama. This has the best controller that I have found on the market. I will be ordering more of these in the future. This is a powerful heater that holds temperature very well.

• Fluval M Submersible Heater
• Aquarium heater that blends into the aquarium environment with built-in reflective technology that mirrors the surrounding colors
• Computer-calibrated thermostat and easy-to-adjust temperature control dial
• Shock resistant Borosilicate glass and high density ceramic heat sick
• Easy to install with slim profile tube for easy placement
• 100-watt heater suitable for freshwater and saltwater aquariums up to 30 gallons with a 3-year warranty
• Quality heater made in Europe using superior components and construction
• Sleek and compact
• Ideal for 100 L (30 US gal) aquariums
• Manufacture: Fluval
• Product Dimensions: 1.8 x 4.8 x 14.8 inches; 8.82 Ounces

• Editor's Impressions Of The Fluval A782
• Heat Quality [star rating='5']
• Quality [star rating='4.7']
• Value For Money [star rating='5']
• Affordability [star rating='3.7']

4. Marineland Precision Heater for Saltwater or Freshwater Aquariums

User Ratings: 64 17

MarineLand ML90652 First Impressions

"There was only~0."

No biggie, but annoying nonetheless. My heater is fully submerged underwater and works perfectly fine. The controller is easy to use, very accurate and reliable. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. Easy enough to let it run all the time. I waited a little bit to write the review so it could be accurate. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees.

• Marineland Precision Heater for Saltwater or Freshwater Aquariums
• This 200 watt heater is for aquariums up to 55 gallons. Adjustable temperature dial allows you to set the temperature 1 degree with every click.
• Thermal Switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.
• The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability
• Advanced mounting bracket securely attaches to glass and provides 3 window positions to view the temperature display
• Easy to view sliding scale tells the exact temperature setting. Top dial view shows the setting from an additional location.
• Manufacture: Marineland
• Product Dimensions: 3.94 x 1.63 x 14.81 inches; 10.4 Ounces

• Editor's Impressions Of The MarineLand ML90652
• Heat Quality [star rating='3.9']
• Quality [star rating='4.1']
• Value For Money [star rating='3']
• Affordability [star rating='4.3']

Honorable Mentions - More Top Selling Freshwater Aquarium Heaters

5. VIVOSUN 50W-500W Aquarium Heater Submersible Titanium Fish Tank Heaters with Intelligent LED Tempera...

User Ratings: 73 8

VIVOSUN First Impressions

"Just bought a second one!"

The heater is being used in a 40 gallon breeder. We would consider a replacement and then we would return the defective unit. I would definitely recommend this product. The temperatures are pretty accurate. I got a hold of Amazon, who put me in touch with the seller. 210 gallon ones and one 90 gallon bow front tank. After several weeks of running the heater.

• VIVOSUN 50W-500W Aquarium Heater Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display and External Temperature Controller
• PRECISE TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within ±1℃/±2ºF; Provide the best living environment for your aquatic creatures
• SAFETY GUARANTEE: Made with IP68, the highest waterproof level; and a titanium tube material that features explosion-proof and anti-corrosion engineering, which makes this submersible heater more resistant to damage while heating better than traditional glass heaters; Built with overheat and water shortage protection
• EXTERNAL TEMPERATURE CONTROLLER: The touch-button controller adjusts the temperature without getting your hands wet. It’s easy to control the temp from 68℉/20°C to 94℉/34°C; Check the size chart to find your desired fish tank heater
• EASY TO SETUP: 300W submersible heater is suitable for 50 to 60 gallons aquariums; Vertical or horizontal installation and ensure the device is fully submerged underwater
• WIDE COMPATIBILITY: The fish tank aquarium heater has CE, FCC and ROHS certification and the plug has a UL certification; Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems
• Press set button to start the temperature setting. The LED display will start to flash, continue pressing set button, the number in LED screen will circulate from 68 to 94 °F
• Manufacture: VIVOSUN

• Editor's Impressions Of The VIVOSUN
• Heat Quality [star rating='4.7']
• Quality [star rating='5']
• Value For Money [star rating='4.6']
• Affordability [star rating='3.8']

6. Fluval Marina Submersible Heater for Aquarium, Mini

User Ratings: 59 9

Marina 11230 First Impressions

"Best value."

We wish the controls were available in Farenheit also to make things a little easier. It would stick out of my 30 g wide tank if I were to put it vertical. There is a misconception on the internet that the heater isn't fully submersible. No biggie, but annoying nonetheless. I would definitely recommend this product. Sometimes it gets outside of it's ability to cool but only within a few degrees. It's pretty noticeable, but I don't really care.

• Fluval Marina Submersible Heater for Aquarium, Mini
• 25-Watt submersible heater for freshwater or saltwater aquariums
• Easy to read temperature settings
• Impact-resistant glass design; waterproof sealing
• Includes bracket with suction cups for easy, secure installation
• Bumper guard to protect fish
• Length: 15 cm (6”)
• Impact-resistant glass design
• Water proof sealing
• Manufacture: Marina
• Product Dimensions: 1.3 x 5 x 10.5 inches; 6.4 Ounces

• Editor's Impressions Of The Marina 11230
• Heat Quality [star rating='4.4']
• Quality [star rating='4.4']
• Value For Money [star rating='3.8']
• Affordability [star rating='4.3']

7. NICREW Preset Aquarium Heater, Submersible Fish Tank Heater with Electronic Thermostat, UL Listed

User Ratings: 71 6

NICREW N11941 First Impressions

"Overall happy."

I will definitely be buying another one for my other tanks at bigger one. Just be careful and keep an eye on your temp settings when you have kids over! This heater is NOT fully submersible. The controller is easy to use, very accurate and reliable. I wouldn't buy any other heater, unless one of these stops working. The suction cups are large, high quality and seem to stick great. The temperature gauge is fairly accurate in my 55 gallon tank.

• NICREW Preset Aquarium Heater, Submersible Fish Tank Heater with Electronic Thermostat, UL Listed
• Preset to 78°F - no adjustment required, which is the ideal temperature for most tropical fish
• Automatic safety shut-off to avoid overheating
• Indicator light allows simple visual confirmation of heater operation (red: heating up; off: temperature reached or unplugged)
• Made from heat, shatter resistant quartz glass to allows for safe temperature control
• Suitable for 3 - 10 gallon freshwater, marine and tropical aquariums
• Manufacture: NICREW

• Editor's Impressions Of The NICREW N11941
• Heat Quality [star rating='3.6']
• Quality [star rating='5']
• Value For Money [star rating='4.5']
• Affordability [star rating='3.4']

8. boxtech Aquarium Heater, 50W/100W/300W Explosion Proof Submersible Thermostat with Adjust Knob and 2...

User Ratings: 69 8

boxtech First Impressions

"Best addition to my tank."

There is no protection from it banging on the glass tank. Sometimes you may have to tinker around with the dial. I got this heater for my 55 gallon aquarium. Awesome chiller, perfect for Hydroponics. The heater is easy; turn the dial to set temp and plug in. 210 gallon ones and one 90 gallon bow front tank. I got the 200W variant for my 54 gallon corner tank that's housing goldfish.

• boxtech Aquarium Heater, 50W/100W/300W Explosion Proof Submersible Thermostat with Adjust Knob and 2 Suction Cups Suit Marine Saltwater and Freshwater
• Fish Tank Heater: 300W aquarium heaters suit for 30 - 80 Gallon fish tank. Voltage:110V, power cord is 5.57ft, Max deep water immersion 20 inch/1.7 FT
• Correct installation: Stick the heater vertical onto the tank side near the water intake or on the way of water flow.（This way the heater can quickly sense the water temperature and make adjustments automatically）, Keep the aquarium heater fully submerged in water
• Fully Automatic Control: Design with External Temperature Controller, Temperature Range is 68 ºF-90 ºF, when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating
• Quartz Tube Safety Protection: Made of heat-resistant milky quartz Glass and UL-Approved Power Cord, Controller IPX4, Heater IPX8 that make it pretty shatter-proof and Explosion-proof and prevents electricity leakage, service life can be 3 years or more
• Notice Please: Before you clean the aquarium or change water, pls must cut off the heater power, after 10 minute cooling then take out the heater and regularly clean the scale on the heater
• Temperature Control: Design with External Temperature Controller, Temperature Range is 68ºF-90ºF, when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating.
• Voltage:110 V Frequency: 50HZ
• Led Indicator Light:When it working, the indicator light is red.
• Manufacture: BOXTECH
• Product Dimensions: 13.39 x 1.97 x 3.54 inches; 11.99 Ounces

• Editor's Impressions Of The boxtech
• Heat Quality [star rating='4.9']
• Quality [star rating='4.7']
• Value For Money [star rating='4.6']
• Affordability [star rating='3.4']

9. hygger Saltwater Tank Titanium Tube Submersible Pinpoint Aquarium Heater with Digital Thermostat, IC...

User Ratings: 77 5

hygger First Impressions

"6 gallon tank."

I went ahead and went with the the larger 300W for my 45 gallon. The suction cups are large, high quality and seem to stick great. If the water runs low or air gets in the heater shuts off. Am a totally sold customer and would recommend them to anybody! I got the 200W variant for my 54 gallon corner tank that's housing goldfish. I have it set to 81F to get a 77F water temp. I left seller feedback yesterday but have yet to hear from the seller.

• hygger Saltwater Tank Titanium Tube Submersible Pinpoint Aquarium Heater with Digital Thermostat, IC Temp Controller 50-500 Watt
• [FULLY SUBMERSIBLE]: Our Betta Tank Heater is fully submersible in water HORIZONTALLY with 2 suction cups can be easily mounted on tank. Place it near a strong water flow so that the whole aquarium at the same temperature. Comes with a separate controller where you can easily adjust from low to high without taking out the heater from the aquarium or fish tank.
• [SHATTERPROOF & ANTICORROSION]: Our Titanium Heater is completely shatterproof as there is NO glass in the construction– it’s made from heavy duty, durable Titanium. As it has a great feature of being anticorrosion, it is perfect for freshwater, saltwater aquariums and reef tanks.
• [PINPOINT TEMPERATURE]: Build-in external electronic theromstat, it has DUAL LCD display that clearly shows you the temperature setting in either Celsius or Fahrenheit. Up is aquarium temperature and down is set temperature. Heater will stop heating when temperature rise exactly to your desired temp. Heating temperature range 32 to 104°F. Control accuracy is +/- 0.5° C.
• [AUTOMATED SHUT OFF SYSTEM]: Temperature can be controlled and set to your desired degree of heat. It automatically sets off when it reached the designated temperature of your setting. Voltage: 110V
• [TANK CAPACITY]: 200-watt aquarium heater, 10.7 inches in length. Recommended for aquariums with 20 to 45 gallons of water capacity.
• IP68 100% Waterproof, Fully Submersible
• Titanium Tube, Shatterproof construction, Corrosion Resistant
• Accurate temperature control from 32°F to 104°F
• Manufacture: hygger

• Editor's Impressions Of The hygger
• Heat Quality [star rating='4.3']
• Quality [star rating='3.8']
• Value For Money [star rating='3.8']
• Affordability [star rating='3.8']

10. hygger Fast Heating Titanium Aquarium Heater with LED Digital Temp Controller 500W 800W Submersible ...

User Ratings: 75 8

hygger First Impressions

"Great concept."

The temperature lights up so it's very easy to read. Keeps the temperature within 1 degree of what you set it to at all times. I'm in the process of setting up for tanks. Was very impressed with the quality of this heater. I have a 10gallon tank that was at 72 degrees. I will be ordering more of these in the future. It took me a few days slowly turning the dial up to finally get it where I wanted.

• hygger Fast Heating Titanium Aquarium Heater with LED Digital Temp Controller 500W 800W Submersible Fish Heater for 60-180 Gallon Freshwater Marine Tank
• This fully submersible aquarium heater enables memory function and over heat protection. Auto shut off when over-heats, resets when it cools down.
• Made with premium titanium and double sealed by black protective guard, this fish tank heater is resistant to explosion and corrosion, and protect fish and other livestocks from punching and scalding
• Build-in external IC temp controller, easy to read blue LED digital number shows real time water temperature. Temp accuracy is +/- 1°F.
• Easy to set temperature without getting hands wet. Build in hand button, Keep pushing the button. It will cycle through all the set temperatures. Temperature can be precisely adjusted from 70 to 94°F
• 800W aquarium heater, voltage 110-120V, suitable for tank capactiy 120-180 gallon freshwater and marine water aquariums
• Do not bury under gravel
• Always keep heater rod fully submerged
• IP68 100% Waterproof, Fully Submersible
• Manufacture: hygger

• Editor's Impressions Of The hygger
• Heat Quality [star rating='3.6']
• Quality [star rating='4']
• Value For Money [star rating='5']
• Affordability [star rating='4.2']