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Aqueon Submersible Aquarium Heater, 100 Watts, Up to 40 Gallons

4.1 4.1 out of 5 stars 257 ratings

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100 Watts, Up to 40 Gallons

Purchase options and add-ons

Brand Aqueon
Special Feature Submersible Aquarium Heater,
Color Multicolored
Indoor/Outdoor Usage Indoor
Product Dimensions 1.5"D x 3.8"W x 12.3"H
Power Source
Corded Electric
Heating Method
fan & forced air
Item Weight
0.55 Pounds
Heat Output
100 Watts

About this item

  • Fully submersible, auto shut-off when overheats, resets when cools down
  • Electronic thermostat stops heating once set temperature is reached
  • Precise temperature setting adjustable to 1° F (68-88° F)
  • Shatter-resistant
  • LED light turns on when aquarium water is being heated, automatic safety shut off and overheat protection
  • For fresh or saltwater aquariums up to 40 gallons

Customer ratings by feature

Temperature Control
3.6 3.6
Accuracy
3.3 3.3
Suction power
3.3 3.3
Value for money
2.4 2.4

Frequently bought together

$31.93
Get it as soon as Tuesday, Mar 26
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Sold by Monster Pets and ships from Amazon Fulfillment.
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$35.97 ($35.97/Count)
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Ships from and sold by Amazon.com.
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$9.99
Get it as soon as Tuesday, Mar 26
In Stock
Sold by capetsma and ships from Amazon Fulfillment.
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Aqueon Submersible Aquarium Heater, 100 Watts, Up to 40 Gallons
Aqueon Submersible Aquarium Heater, 100 Watts, Up to 40 Gallons
Recommendations
Aqueon Submersible Aquarium Heater, 50 Watts, Up to 20 Gallons
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Aqueon Submersible Aquarium Heater
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Aqueon Submersible Aquarium Heater
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Price-18% $31.93
List:$38.99
-19% $29.95
List:$36.99
$31.95$43.10
Delivery
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it Mar 27 - Apr 1
Customer Ratings
Accuracy
3.3
3.8
4.1
4.2
Suction power
3.3
3.9
4.4
4.3
Value for money
2.4
3.6
4.0
3.5
Temperature Control
3.6
4.4
3.7
Sold By
Monster Pets
Amazon.com
Aidan and Little Prince
Gatzies
power source
Corded Electric
Corded Electric
Corded Electric
Corded Electric
heating method
fan & forced air
fan & forced air
wattage
100 watts
50 watts
100 watts
50 watts
heating coverage
40 square feet
20
40 gallon
20 square feet
heat output
100 watts
50 watts
100 watts
50 watts
weight
0.55 pounds
0.55 pounds
0.5 pounds

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Aqueon

Aqueon Submersible Aquarium Heater, 100 Watts, Up to 40 Gallons


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From the manufacturer

 Aqueon, fish tank filters, fish tank cartridges, aquarium filters, aqueon cartridges Aqueon, fish tank filters, fish tank cartridges, aquarium filters, aqueon cartridges, fish tank Aqueon, fish tank filters, fish tank cartridges, aquarium filters, aqueon cartridges, fish tank Aqueon, fish tank filters, fish tank cartridges, aquarium filters, aqueon cartridges, fish tank
E3 Gallon E10 Gallon E20 Gallon E40 Gallon
Customer Reviews
4.1 out of 5 stars
4,171
4.2 out of 5 stars
2,739
4.3 out of 5 stars
785
4.2 out of 5 stars
817
Model QuiteFlow E Internal 3 QuietFlow E Internal 10 QuietFlow E Internal 20 QuietFlow E Internal 40
Aquarium Size Up to 3 gallons Up to 10 gallons Up to 20 gallons Up to 40 gallons
Replacement Cartridge Size X-Small Small Medium Large
Filtration Options Filter Cartridge (Mechanical and Chemical) Filter Cartridge (Mechanical and Chemical) Sponge (Mechanical) Biological Cartridge Holder (Biological) Filter Cartridge (Mechanical and Chemical) Sponge (Mechanical) Biological Cartridge Holder (Biological) Filter Cartridge (Mechanical and Chemical) Sponge (Mechanical) Biological Cartridge Holder (Biological)
Flow Rate 25 GPH 60 GPH 130 GPH 290 GPH
Filter size (LxWxH) 2.75" x 2.75" x 6.81" 4.69" x 3.75" x 6.31" 5.75" x 3.94" x 8.19" 6.5" x 5.69" x 11.19"
QuietFlow Internal QuietFlow Small Filter Cartridge by Aqueon
Customer Reviews
4.7 out of 5 stars
44,635

Looking for specific info?

Product Description

Aqueon Submersible Aquarium Heaters are made from thermal shatter-resistant quartz glass and designed to absorb impacts, making them extremely durable. An electronic thermostat stops heating once set temperature is reached. A power indicator light turns on when the unit is heating and is equipped with a 6-foot power cord. UL approved, the heater is also programmed to turn itself off when not properly submersed to avoid overheating and damage. This heater can be positioned at a vertical or horizontal angle and used in freshwater and saltwater aquariums. Wattage heaters are available in 50W, 100W, 150W, 200W and 300W.

Aqueon products offers a wide range of items so that you can build and maintain a healthy aquatic environment. All the essentials from fish tanks, filters, lighting, food, care, and other supplies that your pet fish needs. We make it easy for you to get your first aquarium and to grow in the hobby as you become more of a fish expert with every step you take and every new thing you learn. For those seasoned hobbyists, we are committed to aquarium product innovation so that we continue to offer products that get you excited. With the Aqueon brand, it's all about the fish.

Important information

Directions

Can be easily installed both vertically or horizontally using the included suction cups

Customer reviews

4.1 out of 5 stars
4.1 out of 5
257 global ratings

Customers say

Customers like the performance, temperature control, and value of the aquarium heater. For example, they mention it works well, maintains temperature, and is easy to set up. That said, some complain about the quality and sturdiness. They say it broke after a few days, shattered in the tank the first night, and accumulated gunk inside. Customers also dislike water resistance, and durability.

AI-generated from the text of customer reviews

34 customers mention25 positive9 negative

Customers like the performance of the space heater. For example, they say it works well, raises the temperature of water quickly, and is dependable. Some mention that the light to indicate when it's on is nice. Overall, most are happy with the quality and performance of this product.

"They’ve been working perfectly fine for a year now no mishaps...." Read more

"Awesome unit. Temperature is accurate and adjustable. I used this unit to replace a 50w in my 10 gallon high tech planted aquarium...." Read more

"...First day. Didn't work. No red light, no heat. Great!3rd day...." Read more

"...I have it set at 82 to keep the tank at 78. Other than that it works good." Read more

17 customers mention17 positive0 negative

Customers are satisfied with the temperature control of the aquarium heater. They mention that it does well maintaining temperature, getting the right temperature was easy, and it allows them to control the temperature. Some say that the heater is easy to install, use, and adjust, and that it raises the temperature of water quickly. Overall, most are happy with their purchase and recommend it to others.

"...It is still maintaining the temperature well several months later." Read more

"...Setting it up and getting the right temperature was easy. I like it so far. Maybe, I’ll purchase more in the future. I do recommend it ...." Read more

"Awesome unit. Temperature is accurate and adjustable. I used this unit to replace a 50w in my 10 gallon high tech planted aquarium...." Read more

"Was a little bigger than I expected but it keeps my tank warm at the perfect temp. It's winter time now and I like leaving my window open at night...." Read more

9 customers mention9 positive0 negative

Customers appreciate the value of the space heater. They mention that it's a great product.

"...Couldn’t be happier. Thank you Aqueon! Price point was perfect too! 11$? Can’t be better." Read more

"Great product at a great cost. It's hard to find this same exact heater for anything less than 25 dollars in PetSmart or Petco...." Read more

"Nice little heater at a good price" Read more

"Great price for heated tank..." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the accuracy of the space heater. They mention that it has easy temperature control.

"Great and dependable. I've had it for a few months. Very accurate." Read more

"This heater can be used vertical or horizontal. Easy temp control and accurate." Read more

"Very accurate. Matches my thermometer perfectly" Read more

"It’s extremely accurate..." Read more

33 customers mention0 positive33 negative

Customers are dissatisfied with the quality of the space heater. They mention that it broke after a few days, broke in 2 weeks, and shattered in the tank the first night. Some customers also report that the heater arrived damaged and was defective.

"...First day. Didn't work. No red light, no heat. Great!3rd day...." Read more

"...to show the water inside of it as well this product is unsafe and poorly designed! Especially for having it for only a week." Read more

"This definitely feels very cheap... shake the heater and the coils inside jingle and hit the glass tubes. Yikes...." Read more

"The only thing to complain about is that the temperature is a few degrees off. I have it set at 82 to keep the tank at 78...." Read more

7 customers mention0 positive7 negative

Customers are dissatisfied with the sturdiness of the space heater. They mention that it rusts inside, has water and rust mixed up together, and accumulated gunk. Some customers also say that the heater is filled with brown sludge after just 12 hours of being in use.

"...I looked at the heater closely and there is water and rust mixed up together inside of the heater...." Read more

"...The disappointment run high with this product.It leaked rusty crap into my aquarium, seemed to work for maybe half a day, but never reached 80..." Read more

"...to mention this is only day two of using the heater and the entire inside has rusted!! I am returning this item and getting something better." Read more

"...It clearly was an old heater. Bottom glass was broken. It was rusted inside. No one checked open product before shipping...." Read more

5 customers mention0 positive5 negative

Customers are dissatisfied with the water resistance of the space heater. They mention that it filled with water overnight, the indicator light is full of water, and it flooded within an hour of first turning it on.

"...Sadly, it filled with water overnight as seen in the video...." Read more

"...The indicator light is full of water.I installed it on the back wall, vertically..., waited almost 2 hours before powering it up...." Read more

"...The second was poorly sealed and the heater flooded within an hour of first turning it on...." Read more

"TERRIBLE, instantly took in water. Im so happy i planted my live plants perfectly only to have them cook at a chill temperature of 92 degrees...." Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the durability of the space heater. They mention that it shorted out and was inoperable within 24 hours.

"...The first would short out and you could actually see the spark when the heating element kicked on...." Read more

"...I'm disappointed it didn't last longer." Read more

"Installed it per instructions and heater was inoperable within 24 hours...." Read more

"Didn’t last long..." Read more

Worked great - As expected
4 Stars
Worked great - As expected
I replaced my submersible Aqueon heater for this Aqueon heater because it allows me to control the temp. Worked right away and raised temp of water quickly. Aqueon makes great products for fishes. I wish it was a bit smaller in height because the minimum line is high and I only have a 10 gallon tank
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Top reviews from the United States

Reviewed in the United States on December 8, 2019
Size: 100 Watts, Up to 40 GallonsVerified Purchase
6 people found this helpful
Report
Reviewed in the United States on January 7, 2020
Size: 100 Watts, Up to 40 GallonsVerified Purchase
One person found this helpful
Report
Reviewed in the United States on March 1, 2022
Size: 100 Watts, Up to 40 GallonsVerified Purchase
Customer image
1.0 out of 5 stars UNSAFE AND POORLY DESIGNED!!!
Reviewed in the United States on March 1, 2022
I have had this heater for a about week now. I got a bigger fish tank and needed a new heater before moving my fish to his bigger tank I moved him in last week. Today I noticed a weird buzzing noise. Then realized that anytime the light came on the buzzing noise started. I looked at the heater closely and there is water and rust mixed up together inside of the heater. I am glad that I was able to notice this before it broke or leaked inside of my tank. This could easily harm/kill a fish! I also have pictures to show the water inside of it as well this product is unsafe and poorly designed! Especially for having it for only a week.
Images in this review
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Customer imageCustomer imageCustomer image
Reviewed in the United States on October 13, 2019
Size: 100 Watts, Up to 40 GallonsVerified Purchase
One person found this helpful
Report
Reviewed in the United States on August 1, 2021
Size: 100 Watts, Up to 40 GallonsVerified Purchase
2 people found this helpful
Report
Reviewed in the United States on May 5, 2020
Size: 100 Watts, Up to 40 GallonsVerified Purchase
One person found this helpful
Report
Reviewed in the United States on November 13, 2019
Size: 100 Watts, Up to 40 GallonsVerified Purchase
2 people found this helpful
Report
Reviewed in the United States on February 21, 2020
Size: 100 Watts, Up to 40 GallonsVerified Purchase

Top reviews from other countries

Dheeraj
5.0 out of 5 stars A very efficient heater
Reviewed in Canada on January 6, 2022
Size: 100 Watts, Up to 40 GallonsVerified Purchase
Tabatha scherger
5.0 out of 5 stars Great heater
Reviewed in Canada on September 30, 2019
Size: 100 Watts, Up to 40 GallonsVerified Purchase