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Fish Tank Heaters & Thermometers Deals

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Aqueon Preset Aquarium Heater, 150-watt slide 1 of 9
Aqueon Preset Aquarium Heater, 150-watt slide 2 of 9
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Aqueon Preset Aquarium Heater, 150-watt slide 9 of 9

Aqueon Preset Aquarium Heater, 150-watt

Rated 3.6 out of 5 stars
343
$26.32 Chewy Price
$38.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Marina Floating Thermometer with Suction Cup for Aquariums

Rated 4.1 out of 5 stars
271
$2.98 Chewy Price
$5.30 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

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Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 1 of 7
Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 2 of 7
Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 3 of 7
Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 4 of 7
Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 5 of 7
Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 6 of 7
Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in slide 7 of 7

Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in

Rated 3.8 out of 5 stars
35
$16.58 Chewy Price
$45.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Zoo Med Paludarium Heater, 25W

Rated 4.3 out of 5 stars
32
$18.79 Chewy Price
$35.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Pawshelf Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in,...

Rated 4.4 out of 5 stars
142
$23.99 Chewy Price
$35.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Lifegard Adjustable Quartz Glass Heater Electronic Control, 300 watt

Rated 4.8 out of 5 stars
6
$34.49 Chewy Price
$37.68 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Sep 5 and Sep 9

Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 8-in, 75-watt

Rated 4.3 out of 5 stars
110
$24.99 Chewy Price
$41.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Marineland Precision Heater, 150 Watt

Rated 3.3 out of 5 stars
117
$34.77 Chewy Price
$43.49 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aquael Ultra 100W Aquarium Heater

Rated 4 out of 5 stars
19
$57.99 Chewy Price
$74.51 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Aquatop Submersible Glass Aquarium Heater, 100-watt

Rated 3.7 out of 5 stars
95
$25.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aqueon Glass Adjustable Aquarium Heater, 200-watt

Rated 3.9 out of 5 stars
95
$43.69 Chewy Price
$59.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Lifegard Pre-Set Quartz Glass Heater Electronic Control, 100 watt

Rated 4.3 out of 5 stars
12
$26.49 Chewy Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Sep 5 and Sep 9

Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt

Rated 4 out of 5 stars
44
$27.97 Chewy Price
$34.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Eheim Thermocontrol E Fish Aquarium Heater, 250 W

Rated 4.4 out of 5 stars
48
$72.21 Chewy Price
$82.28 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Lifegard Led Digital Thermometer, Blue

Rated 4.4 out of 5 stars
5
$34.49 Chewy Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Sep 5 and Sep 9

K&H Pet Products Thermo-Pond Perfect Climate Deluxe Pond Deicer, 750 Watt

Rated 3.8 out of 5 stars
117
$54.98 Chewy Price
$83.99 List Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Sep 4 and Sep 8

H2Pro Titanium Aquarium Heater, 50-watt

Rated 4.3 out of 5 stars
12
$64.99 Chewy Price
$105.56 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Aqueon Pro Aquarium Heater, 300 watt

Rated 3.8 out of 5 stars
118
$60.60 Chewy Price
$84.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Seapora Mini Desktop Aquarium Heater, 30-watt

Rated 2 out of 5 stars
1
$13.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

GloFish Submersible Fish Heater, 50-watts

Rated 4.1 out of 5 stars
23
$17.47 Chewy Price
$22.49 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Marina Betta Submersible Aquarium Heater

Rated 3.9 out of 5 stars
73
$12.98 Chewy Price
$22.78 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater

Rated 4.7 out of 5 stars
3
$48.82 Chewy Price
$48.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Tetra HT40 Submersible Aquarium Heater & Electronic Thermostat, 150-watt

Rated 3.2 out of 5 stars
21
$23.97 Chewy Price
$29.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Zoo Med Aqua Cool Aquarium Cooling Fan

Rated 2.3 out of 5 stars
7
$23.59 Chewy Price
$45.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Seapora Quartz Aquarium Heater, 200-watt

Rated 4 out of 5 stars
7
$23.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydor Theo Shatterproof Aquarium Heater, 150-watt

Rated 3.5 out of 5 stars
45
$30.84 Chewy Price
$41.95 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Sep 3 and Sep 7

Seapora SmartTemp Dual Digital Aquarium Heater, 300-watt

Rated 5 out of 5 stars
3
$66.98 Chewy Price
$85.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Aqueon Aquatic Flat Heater, 15-watt

Rated 3.7 out of 5 stars
56
$17.95 Chewy Price
$20.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics Bioplus Thermo 100 Internal Fish Heater

$70.00 Chewy Price
$99.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Penn-Plax Aquarium LED Display Heater, 300W

Rated 2.4 out of 5 stars
5
$32.99 Chewy Price
$64.99 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Sep 3 and Sep 7

OASE Indoor Aquatics Bioplus Thermo 200 Internal Fish Heater

Rated 5 out of 5 stars
2
$84.99 Chewy Price
$109.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

JBJ Aquarium Arctica Titanium Aquarium Chiller, 1/15-hp

Rated 5 out of 5 stars
3
$643.32 Chewy Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Sep 5 and Sep 9

OASE Indoor Aquatics Bioplus Thermo 50 Internal Fish Heater

Rated 3 out of 5 stars
2
$65.59 Chewy Price
$94.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Tetra Pond De-Icer, 300-watt

Rated 4.3 out of 5 stars
97
$51.49 Chewy Price
$73.19 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Laguna Pond Heater, 500W

Rated 3.7 out of 5 stars
7
$84.88 Chewy Price
$196.56 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

K&H Pet Products Thermo-Pond Perfect Climate Submersible Pond Deicer

Rated 3.5 out of 5 stars
21
$33.21 Chewy Price
$86.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Product Type

Aquarium Type

Fish Type

Brand

7 Brands are shown below

Price

Customer Rating