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Aqueon Aquarium Fish Tank Preset Heater For Up To 40 Gallons, 100 Watts

4.3 4.3 out of 5 stars 3,967 ratings
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Amazon's Choice in Aquarium Heaters by Aqueon

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100 Watts

Purchase options and add-ons

Brand Aqueon
Special Feature Preset Aquarium Heater
Color Multicolored
Form Factor Heater
Indoor/Outdoor Usage Indoor
Power Source
Corded Electric
Heating Method
Forced Air
Item Weight
7.52 ounces
Heat Output
100 Watts

About this item

  • Preset to 78 degree, accurate to plus/- 1 degree
  • No adjustment required
  • Shatter resistant
  • Fully submersible, auto shut-off when overheats, resets when cools down
  • LED light turns on when aquarium water is being heated
  • Ideal for aquariums up to 30 gallons

Customer ratings by feature

Suction power
3.5 3.5
Value for money
3.2 3.2
Accuracy
3.2 3.2
Temperature Control
3.2 3.2

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From the manufacturer

It's All About The Fish!

Developed by true aquatic hobbyists, Aqueon provides a broad array of aquarium solutions to help maintain healthy, life-sustaining aquatic environments. From inception, Aqueon had one goal in mind: “Doing what is best for the health and well-being of fish and aquatic life.” This focus on the little things will make your life easier when keeping an aquarium, and in turn, keep your wet friends happy and healthy. Because with the Aqueon brand, it’s all about the fish.

Aqueon

Aqueon
For Seasoned Hobbyists:

we are committed to aquarium product innovation so that we continue to offer products that get you excited.

For Beginners:

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. Products include:

  • Aquariums and Fish Tanks
  • Filters
  • Lighting
  • Species specific food
  • Fish and water care

Product guides and documents

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.5 x 1.5 x 7 inches; 7.52 ounces
  • Item model number ‏ : ‎ 100106252
  • Department ‏ : ‎ Unisex-Adult
  • Date First Available ‏ : ‎ November 5, 2014
  • Manufacturer ‏ : ‎ Central Garden & Pet
  • ASIN ‏ : ‎ B00P9QH5US
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.3 4.3 out of 5 stars 3,967 ratings

Looking for specific info?

Product Description

Aqueon Preset Aquarium Heaters require no adjusting! The preset temperature has been calibrated to 78°, appropriate for most tropical fish. It is fully submersible, constructed of shatter-resistant quartz glass and features an automatic safety shut-off to avoid overheating. The heaters include suction cups and can be placed vertically or horizontally within the aquarium.  An LED indicator light displays red when actively heating. Available in different sizes to accommodate all aquarium sizes.

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.

Disclaimer: Variations in room temperature may cause slight deviations in the actual water temperature.

Important information

Directions

Preset to 78°, accurate to +/- 1°

Customer reviews

4.3 out of 5 stars
4.3 out of 5
3,967 global ratings

Customers say

Customers like the value, size and ease of installation of the space heater. For example, they mention it's a great product for the price, perfect for small tanks and that it'll work great. That said, opinions are mixed on performance, durability, and temperature.

AI-generated from the text of customer reviews

67 customers mention48 positive19 negative

Customers like the value of the space heater. They say it's a great product for the price, and a good way to save money on heaters for QT tanks, rock curing tubs, and water mixing. They also say it makes individual heating more affordable, and that they keep a few spares as backups.

"...We’ve had the same model for a a smaller tank for years. A very good value." Read more

"The price is right, but they don't last forever. Luckily I frequently check the temp in the tank and noticed it was down to around 72 degrees...." Read more

"...Not returning it only because it was cheap and I can use that temperature setting elsewhere...." Read more

"...and if you have a bunch of tanks like I do then it makes individual heating more affordable." Read more

28 customers mention22 positive6 negative

Customers like the size of the space heater. They say it's wonderful small, perfect for small tanks, and compact. Some say it can hide anywhere. Overall, most are happy with the size and functionality of the product.

"...I could not turn this up due to manufacturing setting! It is a nice size and keep the temp at the correct temperature!" Read more

"To start, this is nice and compact with it being a bit over 5.5 inches...." Read more

"...Its the perfect size for my 10 gal tank, its not big and doesnt look bulky, and it does its job just fine." Read more

"...Temp is preset to a perfect 76 degrees. Highly recommend for small tanks." Read more

23 customers mention23 positive0 negative

Customers find the installation of the aquarium heater to be easy. They mention that it is simple, easy to set up, and works well. Some appreciate the convenience and ease of use. Overall, most are happy with their purchase and recommend it to others.

"...Easy to use already programed, just plug in and submurge" Read more

"...It is silent, easy to install, light, and is barely noticeable in the tank. It works great I recommend" Read more

"It’s really easy to use, all I had to was plug it in...." Read more

"...I like the convenience and ease of use. I am writing this in the summer, and so we’ll see how it does in the winter...." Read more

251 customers mention117 positive134 negative

Customers are mixed about the performance of the space heater. Some mention that it does its job just fine, works great for their aquarium, and is very useful for some specific conditions. However, others say that it quit working after a short period of time, didn't work after they changed it to a new tank, and didn''t do as promised. Some customers also say that the instructions on use are useless.

"...The first one worked great, but after a few months, it stopped working...." Read more

"Tank heater works as it should. The red light turns on when it's heating. I got 2 of the 100 watts in tank water heater...." Read more

"This product doesn't really work as a heater in a 40 gallon...." Read more

"...It is perfect for my needs." Read more

246 customers mention127 positive119 negative

Customers are mixed about the temperature of the space heater. Some mention that it regulates like it should and maintains temperature in their 35 gal tank, while others say that it struggles to maintain the temperature, shutting off even though the water isn't that warm, and that the temperature calibration may be slightly off.

"...The heaters work for both tanks. Not overheating. They stay in a range...." Read more

"...a new one, and this one keeps shutting off even though the water isn't that warm...." Read more

"It’s an aquarium heater, and it heats our 75 gallon tank, no problem. We’ve had the same model for a a smaller tank for years. A very good value." Read more

"...Struggles in very cold weather but I'm sure they all would in sub zero temps" Read more

61 customers mention24 positive37 negative

Customers are mixed about the durability of the space heater. Some mention it's dependable, solid, and works great for years. However, others say that it broke and didn't last for months.

"...received an electrical shock at least once and these have the shortest life span. The second type the switch inevitably fails...." Read more

"...But during the year it's very reliable and steady. I would give it 5 stars if it would last longer." Read more

"The water heater started peeling about three months in. Now it leaves little peeled off black particles in my aquarium 🥴..." Read more

"...First of all, the box was torn up so it had been sealed in a plastic bag before being put in the mailer...." Read more

23 customers mention4 positive19 negative

Customers are dissatisfied with the stability of the space heater. They mention that it fails to stay on to raise tank temperature, it continues to go off and come back on an hour later without heating their tank, and it continues turning off and on randomly. The water to their turtle tank does get very cold as it only stayed on for a few seconds and clicked back off.

"...Maybe it's on purpose, because it shuts off around 80 degrees, but I swear the first one heated warmer. My ideal would be about 82 degrees." Read more

"This product doesn't really work as a heater in a 40 gallon. It consistently shuts off and the water to my turtle tank does get very cold as a result..." Read more

"...It is on constantly compared to the one I had previously, and it’s only in a 10 gal tank. It seems to struggle to maintain the temperature...." Read more

"...I unplugged and replugged - that made them both come on, but neither would not stay on. They are completely submerged...." Read more

Worksgreat
5 Stars
Worksgreat
Preset and keeps my tank at 79 works good so far so good
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Top reviews from other countries

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simon robinson
5.0 out of 5 stars The best idea
Reviewed in Canada on September 21, 2022
Size: 200 WattsVerified Purchase
Pablo Guerrero
5.0 out of 5 stars buen producto
Reviewed in Mexico on March 23, 2023
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Client d'Amazon
5.0 out of 5 stars good but dont like that
Reviewed in Canada on November 2, 2022
Size: 200 WattsVerified Purchase
Cindy
5.0 out of 5 stars Amazing
Reviewed in Canada on January 4, 2022
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3 people found this helpful
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calaltaca
4.0 out of 5 stars Something to think about
Reviewed in Canada on November 9, 2021
Size: 200 WattsVerified Purchase
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