Submersible Aquarium Heater with External Thermostat Display – Avelune
Submersible Aquarium Heater with External Thermostat Display – view 2
Submersible Aquarium Heater with External Thermostat Display – view 3
Submersible Aquarium Heater with External Thermostat Display – view 4
Pet & Farm

Submersible Aquarium Heater with External Thermostat Display

Chosen because customers reordered it
$24.95 $45.95 Save 46%

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Order today, estimated delivery Nov 23 – Dec 5 · Free shipping over $39

Type100W(15-25 gallon)

In stock — ships in 1–3 business days
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Free shipping over $39. Tracked to your door, 7–15 business days across the US.
30-day returns. Unused and in original condition. Wrong or damaged on arrival is on us.
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Shipping & delivery

Orders are processed in 1–3 business days, then delivered in 7–15 business days across the United States and 10–20 business days to other countries. You receive a tracking link by email as soon as your parcel leaves.

Standard shipping is free on orders of $39 or more. Below that it is a flat $8.99 in the US and $11.95 to other countries. Multi-item orders may arrive in separate parcels a few days apart, at no extra cost.

Returns & refunds

You have 30 days from delivery to return an unused item in its original condition. Email us and we send instructions the same day.

If an item arrives damaged, faulty or not what you ordered, contact us within 7 days with a photo and choose a free replacement or a full refund — you pay nothing to return it.

Maintain the Perfect Temperature for Your Fish

This submersible aquarium heater is designed to provide a comfortable and stable environment for your aquatic pets. With an external thermostat display, you can easily monitor and adjust the temperature to ensure your fish thrive.

Why You'll Love It

  • External Thermostat Display: Easily check and adjust the temperature without having to remove the heater from the tank.
  • Multiple Power Options: Available in various wattages to suit different tank sizes, from 15 to 60 gallons.
  • Durable Construction: Made with a titanium shell for enhanced durability and heat retention.
  • Easy Installation: Comes with suction cups for secure placement in your aquarium.

Product Details

  • See the size options and photos above for exact measurements.
  • Type: 100W(15-25 gallon)

What's in the Box

  • 1 Submersible Aquarium Heater

How to Use

  1. Submerge the heater in the aquarium water.
  2. Use the external display to set your desired temperature.
  3. Secure the heater in place using the provided suction cups.

Good to Know

Ensure the heater is fully submerged before turning it on to avoid damage. Regularly check the temperature to maintain a stable environment for your fish.

FAQ

What size aquarium is this heater suitable for?
This heater is suitable for aquariums ranging from 15 to 60 gallons, depending on the wattage selected.

Can I use this heater in saltwater aquariums?
Yes, this heater is suitable for both freshwater and saltwater aquariums.

Specification
Category
Pet & Farm
Type
100W(15-25 gallon), 200W (25-40 Gallon), 300W (50-60 Gallon), 400W
Condition
New
Processing
1–3 business days
Delivery
7–15 business days in the US
Returns
30 days from delivery
Our part of the deal

Packed by hand.Tracked to your door.Backed for thirty days.

Avelune · Est. 2026
What you can count on

The part that happens after you order

Tracked shipping

Free on orders of $39 or more, a flat $8.99 in the US below that. Tracking on every single order, no exceptions.

30-day returns

Thirty days from delivery to change your mind on unused items. Wrong or damaged on arrival is on us, always.

Safe checkout

Visa, Mastercard, Amex, Discover, PayPal, Apple Pay, Google Pay and Shop Pay over an encrypted, PCI-compliant checkout.

People, not scripts

Email us any day of the week and a real person replies within 24 hours, usually much sooner.

From order to doorstep

What happens after you press buy

No mystery, no silent weeks. Here is the whole journey, with the timing we hold ourselves to.

01

We pick and check

Your order is routed to the partner warehouse holding that piece, pulled, inspected and packed for transit.

1–3 business days
02

It ships with tracking

You get an email with a tracking link the moment it leaves. Multi-item orders may travel in separate parcels, at no extra cost.

Tracking on every order
03

It reaches your door

Most US addresses receive within 7 to 15 business days of dispatch. If it runs long, write to us and we reship or refund.

7–15 business days
Before you order

Questions about this order

The three things customers ask most before buying. Anything else, email us and a person replies within a day.

When will this arrive?

We process in 1–3 business days, then delivery takes 7–15 business days across the United States and 10–20 business days elsewhere. You get a tracking link by email as soon as it ships.

What if it is not right?

You have 30 days from delivery to return an unused item in original condition. If it arrives damaged or wrong, send a photo within 7 days and pick a free replacement or a full refund — you pay nothing to return it.

Is shipping really free?

On orders of $39 or more, yes, to every destination we serve. Below $39 it is a flat $8.99 in the US and $11.95 to other countries.

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