Heaters · Preset
Aqueon Preset Heater 150 W
Aqueon rates it for aquariums up to 55 US gal; preset to 78°F.
Aqueon’s fully submersible heater, preset at the factory to 78 °F, which Aqueon gives as accurate to within 1 °F. Shatter-resistant quartz glass, an automatic safety shut-off against overheating, and a light that glows red while it heats. It mounts with suction cups, upright or lying down.
Consider: Preset to 78 °F with nothing to set: right for most tropical fish, too warm for goldfish and other cool-water fish. Choose an adjustable heater if yours need a different temperature.
US version, item 100106253. Check what’s in the box before you buy.
Tank size Aqueon rates it for
Up to 55 US gal
Choose your tank to see where it falls.
Check it against your tank →Specifications that affect fit
- Manufacturer capacity
- Up to 55 US gal
- Power
- 150 W
- Supply voltage
- Not published
- Dimensions
- Not published
To see what it costs to run, enter the watts on its label and your daily hours in the electricity cost calculator.
Before choosing this model
- Check that 78 °F suits the fish you keep: it can’t be turned up or down.
- Use a separate thermometer to see what the water really holds.
What Aqueon doesn’t publish
- Aqueon doesn’t publish the heater’s own length or its voltage. Check the box before you buy for a tight space.
Our buying guides size it for these tanks:
20 gallon29 gallon40 gallon55 gallon
Item details from Aqueon 2026 Aquatic Product Catalog, page 35, Preset Heaters item 100106253.
A heater rated for your tank can still fall short in a cold room: see how to size one.
Check it against your tank → Something not working? See the troubleshooting guide.
Included items & upkeep
- heater
- suction cups
Plan for the routine work
- The red light shows when it is heating; if the water stays cold with the light on, check your room against Aqueon’s wattage chart.
- Unplug it and let it cool before you take it out of the water.
To budget for replacement media and supplies, use the first-year cost calculator. For how often and how to clean it, follow the maker’s manual.