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Fluval

Fluval E 100 Watt Electronic Heater

  • Based on 5,936 reviews
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Availability: In Stock.
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Arrives Wednesday, Feb 11
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Style: E100


Pattern Name: Heater


Features

  • Continuously monitors and displays aquarium water temperature in real time
  • Intelligent digital microprocessor monitoring system with dual temperature sensors
  • Ensures the safety and well-being of your aquarium inhabitants
  • Precision temperature control allows settings in 0.5-degree increments
  • Integrated fish guard provides advanced protection

Description

The most technologically advanced aquarium heater available today, Fluval E100 Advanced Electronic Heater with VueTech technology delivers peace of mind thanks to several excellent features.Equipped with an intelligent digital microprocessor monitoring system with dual temperature sensors, this heater continuously monitors and displays aquarium water temperature, ensuring the safety and well-being of your aquarium inhabitants.

Brand: Fluval


Color: Black


Indoor/Outdoor Usage: Indoor


Power Source: Corded Electric


Product Dimensions: 1.8"D x 3.3"W x 15.3"H


Brand: ‎Fluval


Color: ‎Black


Indoor/Outdoor Usage: ‎Indoor


Product Dimensions: ‎1.8"D x 3.3"W x 15.3"H


Recommended Uses For Product: ‎Decoration


Mounting Type: ‎Tabletop Mount


Room Type: ‎Bedroom


Voltage: ‎230 Volts


Max Temperature Setting: ‎95 Degrees Fahrenheit


UPC: ‎015561107723


Global Trade Identification Number: ‎23


Manufacturer: ‎Rolf C. Hagen (USA) Corp.


Part Number: ‎A772


Item Weight: ‎10.8 ounces


Item model number: ‎A772


Is Discontinued By Manufacturer: ‎No


Size: ‎E100


Style: ‎E100


Finish: ‎Unfinished


Material: ‎Plastic


Pattern: ‎Heater


Shape: ‎Rectangular


Wattage: ‎100 watts


Installation Method: ‎submerged, wall mounted


Item Package Quantity: ‎1


Number Of Pieces: ‎1


Type of Bulb: ‎LED


Switch Style: ‎Touch


Usage: ‎Indoor


Included Components: ‎HAGEN FLUVAL E 100W HEATER


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎5 years; fluval e series heaters are guaranteed against defects in material or workmanship under normal aquarium usage and service for 5 years. We offer a 5 year guarantee on all nonreplaceable parts which means that the heater will be repaired or replaced at the manufacturer's discretion, free of charge, when the complete heater is returned with proof of purchase and postage paid. This warranty does not apply to any heater that has been subjected to misuse, negligence, or tampering. No liability is assumed with respect to loss or damage to livestock or personal property irrespective of the cause thereof.


Date First Available: August 19, 2004


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Feb 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • ⭐️⭐️⭐️⭐️⭐️ Precise, stable heating with excellent safety features
Style: E200 Pattern Name: Heater
The Fluval E200 electronic heater has been rock solid in my aquarium. What really sets it apart is the temperature stability and accuracy. Once set, it maintains the water temperature extremely well without noticeable swings, which is critical for fish health. The digital display is clear and easy to read, and I appreciate being able to adjust the temperature precisely instead of guessing with a dial. The heater reacts quickly when the temperature drops and shuts off properly once the target range is reached. Build quality feels premium and well thought out. The protective casing adds peace of mind, especially in tanks with active fish. It also feels safer than traditional glass heaters thanks to its internal safety features. Pros: • Very accurate temperature control • Clear digital display • Stable heating with minimal fluctuation • Strong safety design and quality build • Ideal for medium to larger aquariums Cons: • Higher price than basic heaters • Takes a bit of space in smaller tanks Overall, this is a reliable, high-quality heater that’s worth the investment if you care about consistency and safety. Perfect for anyone upgrading from basic heaters or running a larger, more sensitive setup. ... show more
Reviewed in the United States on December 23, 2025 by Ahmed Radhy
    • GREAT HEATER
Style: E300 Pattern Name: Heater
I read many reviews before I made my mind up on this heater. I will say I am sold on FLUVAL, as I currently own 2, 306 filters, 2, Q2 air pumps, and lastly 1, E200 and one E300 heater. I could not make up my mind with the first E200 or go with a E300 for a 55, I have two, am happy with both so this is about both since nothing but capacity changes with them, functions are the same. I can say, I had the old school type heaters, which seemed ok but had a hard time setting my temps just right. You know the drill, set the dial and wait a day, turn it back some, turn it up some, what a waste. With this heater it is SET and FORGET. With the color changing display you know what it is doing, or more so if there is a temp change more than 1 degree, it lets you know. I do have thermometers, the strip kind, I know I should get the real ones, howerver as the Fluval gives a real time, real temp display I do not think I will, I have also and do still, since these are new to me, check with a laser temp meter, so far both are to with in half a degree of the setting, Yes they do need water flow to work, so if you have HOB filter they would need to be close to that, I use canister filters with spray bar, so no problem there. One BIG plus for me, in my thoughts is the gaurd that keeps my fishes from rubbing up against a hot tube and burning themselves. The side mount is also usefull, as I have it on one of my tanks, my fish like the corner I would like to put it in, best second location is to the front, and the agles attachment lets you veiw the display. All in all, Very good, accurate heater, great display, great warnings if temp changes. I am so far happy with this unit, Hope if you a thinking of getting one of these do not hold back, In my opinion they work very well and you will be glad you did. ... show more
Reviewed in the United States on April 11, 2012 by Fish 123
    • Fluval E 200 - Best Aquarium Heater I've Ever Owned
Style: E200 Pattern Name: Heater
First off, I'm a Mechanical Engineer with 31 years of experience and have a considerable amount of experience related to heat transfer. I've also kept aquariums for 36 years and currently have 3. I've had a Fluval E 200 watt heater in a 75 gallon tank for almost 3 years and it's performed flawlessly. I've read tons of reviews stating the low flow warning is a problem, but that warning is an attribute of this heater. Tank heaters are very compact for the amount of heat they generate and must exchange the heat to their surroundings efficiently or they'll burn themselves out. Just imagine grabbing an old fashioned 100 watt incandescent light bulb that's been on for several minutes .... now imagine that it's a 200 or 300 watt bulb! Also think about the fact that the largest portable space heater you can buy and plug into a standard 120 Volt wall receptacle is 1500 watts. That'll give you a perspective of how much energy 200 or 300 watts is. So yes, you absolutely need water flowing over the heater to carry heat off as opposed to it only heating the immediate area and then shutting off. My 75 gallon tank is fully covered and is in my basement which is typically 63 - 66 degrees in the winter and this 200 watt heater has always kept it within 1/2 degree of the 77 degree setting. I've had many different tank heaters through the years and will never buy anything but these again. As many others have said, being able to just glance over and see the green display indicating that the water temp is within 2 degrees of set point is very nice! I literally look at it every night before going to bed and casually glance at it during the day without even focusing on what the temp actually is. I'm sure many have had defective units but these heaters are wonderful when functioning properly. Oh and I put zero value into reviews stating any heater won't work when the operating conditions aren't given. How many gallons is the tank, what's the ambient air temp, is the aquarium fully covered, etc, need to be known to evaluate whether sufficiently sized. Putting a 1500 watt heater in a well insulated 300 square foot room in your house will keep it toasty; putting that same heater in your outdoor shed in the winter ..... won't help much. One last thing, I'm absolutely not a fan of putting a heater that's considerably larger than required in a tank as I've seen advised many times. All heaters will eventually fail and if it fails in the on mode, I don't want to cook my fish. I'd much rather have 2 smaller heaters in a tank than 1 over sized heater. That way if one fails and won't shut off, the other heater either won't come on at all, or will intermittently cycle to make up what the stuck heater can't do. Heaters are designed to work and will last just fine even if they run a majority of the time. In fact many products will actually last longer if they can just run as opposed to "short cycling" as when they're considerably over sized. I have a Clown Loach that's between 8 - 10 years old and I have no intention of allowing a faulty heater to kill it or any other fish under my watch. ... show more
Reviewed in the United States on December 23, 2018 by Keith B

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