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  • highest standard of quality
  • thermostat with gilded contacts
  • computer-assisted testing of every single device

    comfortzone gold


COMFORTZONE GOLD is a glass aquarium heater with a thermostat whose contacts are covered with a layer of gold.
Conventional glass heaters for aquariums basically consist of a thermostat, thermostat contacts, and a heating coil. The thermostat controls the water temperature in the tank and, when necessary, switches the heating coil on or off by connecting or disconnecting the contacts.
Thermostat contacts constitute the weakest link of this system. Although their operation is electronically assisted, metal oxidation gradually causes their surface to corrode. Corrosion shortens the useful life of the heater and decreases the precision of their operation.

In COMFORTZONE GOLD heaters, this problem has been eliminated thanks to the electrodeposited coating of thermostat contacts with a layer of gold. Being one of the least reactive metals, gold is resistant to oxidation. This solution significantly extends the useful life of COMFORTZONE GOLD heater and keeps the precision of its operation. This heater guarantees many years of failure-free operation and complete thermal safety of the animals kept in your aquarium.

In order to guarantee the highest quality of workmanship, every single COMFORTZONE GOLD heater, before it gets to the end user, undergoes computer-assisted testing and calibration at AQUAEL's professional laboratory. The accuracy of the thermostat is within ±1°C.
The new COMFORTZONE GOLD heaters are available in eight different models and can, therefore, be used in freshwater and marine aquariums of virtually any size. Thanks to their black colour, they can be easily made inconspicuous in an aquarium.



width - depth - height [cm]
Unit package
width - depth - height [mm]
capacity of aquarium [l]
Energy [W]Colours
COMFORTZONE 25 W GOLD 29x29x240 90x50x290 10 - 25 25 black
COMFORTZONE 50 W GOLD 29x29x270 90x50x290 15 - 50 50 black
COMFORTZONE 75 W GOLD 29x29x270 90x50x290 35 - 75 75 black
COMFORTZONE 100 W GOLD 29x29x270 90x50x290 60 - 100 100 black
COMFORTZONE 150 W GOLD 29x29x312 90x50x380 90 - 150 150 black
COMFORTZONE 200 W GOLD 29x29x312 90x50x380 130 - 200 200 black
COMFORTZONE 250 W GOLD 29x29x368 90x50x380 180 - 250 250 black
COMFORTZONE 300 W GOLD 29x29x368 90x50x380 230 - 300 300 black





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