Aquarium and Fish Tank Heaters

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Slide 1 of 6
OASE Indoor Aquatics HeatUp 400 Adjustable Fish Heater slide 1 of 6
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OASE Indoor Aquatics HeatUp 400 Adjustable Fish Heater slide 1 of 6
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OASE Indoor Aquatics HeatUp 400 Adjustable Fish Heater slide 1 of 6
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OASE Indoor Aquatics HeatUp 400 Adjustable Fish Heater

Rated 4.7 out of 5 stars
3
$57.99 Chewy Price
$62.99 List Price
Autoship Price

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

Slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
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Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
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Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
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Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 4 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 5 of 5

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

Rated 4 out of 5 stars
42
$27.97 Chewy Price
$34.99 List Price
20% Off
Autoship Price

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

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Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
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Fluval M 200Watt Submersible Fish Heater slide 1 of 8
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Fluval M 200Watt Submersible Fish Heater slide 1 of 8
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Fluval M 200Watt Submersible Fish Heater

Rated 4.3 out of 5 stars
26
$36.99 Chewy Price
Autoship Price

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

Slide 1 of 2
Zoo Med BettaTherm Mini Size Betta Bowl Heater slide 1 of 2
Zoo Med BettaTherm Mini Size Betta Bowl Heater slide 2 of 2
Zoo Med BettaTherm Mini Size Betta Bowl Heater slide 1 of 2
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Zoo Med BettaTherm Mini Size Betta Bowl Heater slide 1 of 2
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Zoo Med BettaTherm Mini Size Betta Bowl Heater

Rated 2.3 out of 5 stars
11
$15.70 Chewy Price
Autoship Price

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

Fluval P10 Pre-Set Aquarium Fish Heater

Rated 4.2 out of 5 stars
22
$19.00 Chewy Price
$26.99 List Price
30% Off
Autoship Price

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

OASE Indoor Aquatics HeatUp 50 Adjustable Fish Heater

Rated 4.2 out of 5 stars
5
$34.82 Chewy Price
$37.99 List Price
Autoship Price

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

Aqueon Fish Tank Mini Heater, 10-watt

Rated 5 out of 5 stars
1
$17.95 Chewy Price
$20.99 List Price
14% Off
Autoship Price

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

biOrb Aquarium Heater Pack

Rated 5 out of 5 stars
1
$47.99 Chewy Price
$52.99 List Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between May 31 and Jun 5

Hydor Theo Shatterproof Aquarium Heater, 25-watt

Rated 3.5 out of 5 stars
44
$26.88 Chewy Price
$35.95 List Price
25% Off
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 4

OASE Indoor Aquatics Filtosmart Thermo 200 External Fish Heater

Rated 3 out of 5 stars
2
$163.89 Chewy Price
$219.99 List Price
26% Off
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
$153.99 List Price
45% Off
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
49% Off
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 3

Seapora Quartz Aquarium Heater, 100-watt

Rated 4 out of 5 stars
7
$21.99 Chewy Price
Autoship Price

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

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White

Rated 1 out of 5 stars
1
$70.99 Chewy Price
Autoship Price

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

Aquael Ultra 100W Aquarium Heater

Rated 3.9 out of 5 stars
17
$57.99 Chewy Price
$74.51 List Price
22% Off
Autoship Price

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

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, Dark Blue

Rated 1 out of 5 stars
1
$88.99 Chewy Price
Autoship Price

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

OASE Indoor Aquatics Biomaster Thermo 600 External Fish Heater

Rated 5 out of 5 stars
3
$400.99 Chewy Price
Autoship Price

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

Laguna Power Heat Heated De-Icer, 315W

Rated 4.3 out of 5 stars
23
$63.70 Chewy Price
$90.99 List Price
30% Off
Autoship Price

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

OASE Indoor Aquatics HeatUp 300 Adjustable Fish Heater

Rated 5 out of 5 stars
4
$40.16 Chewy Price
$56.99 List Price
30% Off
Autoship Price

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

Hydor Micro & Mini Aquarium Slim Heater, 15-watt

Rated 3.8 out of 5 stars
36
$15.29 Chewy Price
$16.95 List Price
10% Off
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 4

OASE Indoor Aquatics Bioplus Thermo 200 Internal Fish Heater

Rated 5 out of 5 stars
2
$84.99 Chewy Price
$109.99 List Price
23% Off
Autoship Price

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

OASE Indoor Aquatics HeatUp 100 Adjustable Fish Heater

Rated 4 out of 5 stars
4
$41.12 Chewy Price
$42.99 List Price
Autoship Price

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

Penn-Plax 10W Plastic Safe Aqiuarium Heater, 4-in

Rated 3.2 out of 5 stars
6
$25.99 Chewy Price
$27.99 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 3

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

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, Dark Blue

Rated 5 out of 5 stars
1
$79.52 Chewy Price
Autoship Price

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

OASE Indoor Aquatics Filtosmart Thermo 100 External Fish Heater

Rated 3 out of 5 stars
4
$134.99 Chewy Price
$169.99 List Price
21% Off
Autoship Price

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

OASE Indoor Aquatics Biomaster Thermo 350 External Fish Heater

Rated 4.7 out of 5 stars
20
$319.99 Chewy Price
Autoship Price

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

OASE Indoor Aquatics Bioplus Thermo 50 Internal Fish Heater

Rated 3 out of 5 stars
2
$65.59 Chewy Price
$94.99 List Price
31% Off
Autoship Price

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

OASE Indoor Aquatics HeatUp 150 Adjustable Fish Heater

Rated 5 out of 5 stars
1
$44.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
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

OASE Indoor Aquatics Filtosmart Thermo 300 External Fish Heater

Rated 1 out of 5 stars
1
$145.32 Chewy Price
$249.99 List Price
42% Off
Autoship Price

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

OASE Indoor Aquatics Bioplus Thermo 100 Internal Fish Heater

$84.54 Chewy Price
$99.99 List Price
15% Off
Autoship Price

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

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, White

$98.99 Chewy Price
Autoship Price

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

Out of Stock

Eheim Jager Thermostat Aquarium Heater, 250-watt

Rated 4.3 out of 5 stars
175

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

Out of Stock

Aqueon Mini Aquarium Heater, 2-gal, 5 watt

Rated 3.7 out of 5 stars
91

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

Out of Stock

Penn-Plax 25W Plastic Safe Aquarium Heater, 6-in

Rated 1 out of 5 stars
1

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

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