Aquarium Heaters & Chillers
Get It Today
Aqueon Preset Heater 50W
(451)$7.41 was $24.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleImagitarium Aquarium Strip Thermometer
(133)$3.49
Buy a Tank or Stand by Imagitarium, Get 15% off Equipment & Décor
Same Day Delivery EligibleImagitarium Glass Thermometer
(119)$3.99
Buy a Tank or Stand by Imagitarium, Get 15% off Equipment & Décor
Same Day Delivery EligibleImagitarium Digital Aquarium Thermometer
(103)$8.17 was $9.99
Buy a Tank or Stand by Imagitarium, Get 15% off Equipment & Décor
Same Day Delivery Eligible
Aqueon Mini Flat Heater
(119)$8.42 was $15.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqueon Aquatic Flat Heater 7.5W
(202)$8.69 was $16.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqueon Preset Heater 150W
(88)$28.99 was $34.99
Same Day Delivery EligibleAqueon Mini Heater, 10W
(260)$19.75 was $19.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery Eligible
Aqueon Pro Submersible 100W Heater
(117)$49.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqueon Aquatic Flat Heater 15W
(122)$9.56 was $19.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqueon Preset Heater 200W
(120)$16.84 was $39.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqueon Pro Heaters Submersible Aquarium Heaters
(174)$54.99
Same Day Delivery EligibleImagitarium Small Aquarium Thermometer
(68)$3.99
Buy a Tank or Stand by Imagitarium, Get 15% off Equipment & Décor
Same Day Delivery EligiblePenn Plax Seachem Combo Alert Pack, 1 Year
(41)$19.99
35% off your first Repeat Delivery
Same Day Delivery EligibleAqueon Pro Submersible 50W Heater
(32)$44.99
Buy 2 Save 30% - Mix & Match
Imagitarium Standing Aquarium Thermometer
(28)$3.99
Buy a Tank or Stand by Imagitarium, Get 15% off Equipment & Décor
Same Day Delivery EligibleK&H Low Wattage Thermo-Pond De-Icer
(41)$89.99
K&H Deluxe Perfect Climate Pond De-Icer, 750 Watts
(18)$47.48 was $84.99
K&H Deluxe Perfect Climate Pond De-Icer, 250 Watts
(19)$74.99 was $79.99
K&H Deluxe Perfect Climate Pond De-Icer, 1500 Watts
(67)$47.84 was $95.99
Tetra HT10 Submersible Aquarium Heater
(148)$12.21 was $12.99
Buy 2 Save 30% - Mix & Match
Tetra 30-40 Submersible Heater
$17.32 was $27.99
Buy 2 Save 30% - Mix & Match
Aqueon Submersible Aquarium Heater
(198)$20.99 – $34.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqueon Pro Submersible 200W Heater
(112)$59.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleAqua Euro USA Max Chill Aquarium Chiller, 1/13 HP
(6)$501.99
Sicce Jolly Heater
(3)$19.99 – $22.99
Aqueon Pro 300 Submersible Aquarium Heater
(116)$64.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleFluval M50 Submersible Heater, 50 W
(21)$19.99 was $29.99
Same Day Delivery Eligible
Aqua Euro USA Max Chill Aquarium Chiller, 1/2 HP
$1,038.99
GloFish Preset Aquarium Heater
(5)$14.66 was $22.99
Same Day Delivery EligibleAqua Euro USA Max Chill Aquarium Chiller, 1/4 HP
(3)$799.99
Aqua Euro USA Max Chill Aquarium Chiller, 1/10 HP
(1)$649.99
Aqueon Preset Heater 100W
(173)$14.99 was $29.99
Buy 2 Save 30% - Mix & Match
Same Day Delivery EligibleTetra 40-55 Submersible Heater
(147)$19.97 was $28.99
Buy 2 Save 30% - Mix & Match
Aquarium Heaters, Chillers & Thermometers
Temperature regulation systems are essential for most aquariums, as fish are cold blooded and need a consistent water temperature for their health and wellness. Alongside your aquarium heater or chiller, it’s important to use an aquarium thermometer to make sure the temperature is just right. If you have a large tank, you may need multiple smaller fish tank heaters at opposite ends of your setup. Doing this helps maintain a stable temperature throughout your habitat.
Why You Might Need an Aquarium Chiller
FAQs About Aquarium Heaters & Chillers
Yes. Some fish require specific water temperatures to live comfortably. So you’ll want to invest in a thermometer to ensure your tank is meeting their needs.
Depending on the species of the fish in your aquarium, you may need a heater to maintain a water temperature close to that of the natural habitat of your fish.
An aquarium chiller is designed to lower the temperature of your tank water. This may be needed when tank temperatures reach unsafe levels.